MFV r293125: less v481.

MFC after:	1 month
Relnotes:	yes

59 files changed, 2075 insertions, 1033 deletions

diff --git a/contrib/less/LICENSE b/contrib/less/LICENSE
index 3fe715f..376b8c8 100644
--- a/contrib/less/LICENSE
+++ b/contrib/less/LICENSE
@@ -2,7 +2,7 @@
                           ------------
 
 Less
-Copyright (C) 1984-2012  Mark Nudelman
+Copyright (C) 1984-2015  Mark Nudelman
 
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions
diff --git a/contrib/less/NEWS b/contrib/less/NEWS
index e03f35a..43f1247 100644
--- a/contrib/less/NEWS
+++ b/contrib/less/NEWS
@@ -7,7 +7,44 @@
       http://www.greenwoodsoftware.com/less
   You can also download the latest version of less from there.
 
-  To report bugs, suggestions or comments, send email to bug-less@gnu.org.
+  To report bugs, suggestions or comments, send email to bug-less@gnu.org
+
+======================================================================
+
+	Major changes between "less" versions 458 and 481
+
+* Don't overwrite history file; just append to it.
+
+* New command ESC-G goes to end of currently buffered data in a pipe.
+
+* Disable history feature when compiled with LESSHISTFILE set to "-".
+
+* In more-compatible mode, make the -p option apply to every file opened,
+  not just the first one.
+
+* In more-compatible mode, change the -e option to work like -E, not -EF.
+
+* Treat multiple CRs before LF are like one CR (all the CRs are hidden).
+
+* Allow "extra" string in lesskey file to append to a multi-char command
+  (like a search pattern), without executing the command.
+
+* Ignore -u/-U setting while viewing help file, so that 
+  underline and bold chars are displayed correctly.
+
+* Improve detection of "binary" files in UTF-8 mode.
+
+* Fix bug with ++ commands.
+
+* Fix bug where prompt was sometimes not displayed with +G.
+
+* Fix possible memory corruption 
+
+* Fix bugs and improve performance in ampersand filtering.
+
+* Automate construction of Unicode tables from Unicode database.
+
+* Allow %% escape sequence in LESSOPEN variable.
 
 ======================================================================
 
diff --git a/contrib/less/README b/contrib/less/README
index 807749a..1088431 100644
--- a/contrib/less/README
+++ b/contrib/less/README
@@ -7,9 +7,9 @@
 **************************************************************************
 **************************************************************************
 
-                            Less, version 458
+                            Less, version 481
 
-    This is the distribution of less, version 458, released 04 Apr 2013.
+    This is the distribution of less, version 481, released 31 Aug 2015.
     This program is part of the GNU project (http://www.gnu.org).
 
     This program is free software.  You may redistribute it and/or
@@ -53,8 +53,9 @@ INSTALLATION (Unix systems only):
      Specifies the regular expression library used by less for pattern
      matching.  The default is "auto", which means the configure program 
      finds a regular expression library automatically.  Other values are:
-        posix          Use the POSIX-compatible regcomp.
+        gnu            Use the GNU regex library.
         pcre           Use the PCRE library.
+        posix          Use the POSIX-compatible regcomp.
         regcmp         Use the regcmp library.
         re_comp        Use the re_comp library.
         regcomp        Use the V8-compatible regcomp.
diff --git a/contrib/less/brac.c b/contrib/less/brac.c
index 70a7771..10a0843 100644
--- a/contrib/less/brac.c
+++ b/contrib/less/brac.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
diff --git a/contrib/less/ch.c b/contrib/less/ch.c
index 2e2ded7..da729c5 100644
--- a/contrib/less/ch.c
+++ b/contrib/less/ch.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
@@ -54,7 +54,7 @@ struct buf {
  * The file state is maintained in a filestate structure.
  * A pointer to the filestate is kept in the ifile structure.
  */
-#define	BUFHASH_SIZE	64
+#define	BUFHASH_SIZE	1024
 struct filestate {
 	struct bufnode buflist;
 	struct bufnode hashtbl[BUFHASH_SIZE];
@@ -323,13 +323,16 @@ ch_get()
 #if HAVE_STAT_INO
 			if (follow_mode == FOLLOW_NAME)
 			{
-				/* See whether the file's i-number has changed.
+				/* See whether the file's i-number has changed,
+				 * or the file has shrunk.
 				 * If so, force the file to be closed and
 				 * reopened. */
 				struct stat st;
+				POSITION curr_pos = ch_tell();
 				int r = stat(get_filename(curr_ifile), &st);
 				if (r == 0 && (st.st_ino != curr_ino ||
-					st.st_dev != curr_dev))
+					st.st_dev != curr_dev ||
+					(curr_pos != NULL_POSITION && st.st_size < curr_pos)))
 				{
 					/* screen_trashed=2 causes
 					 * make_display to reopen the file. */
@@ -536,6 +539,32 @@ ch_end_seek()
 }
 
 /*
+ * Seek to the last position in the file that is currently buffered.
+ */
+	public int
+ch_end_buffer_seek()
+{
+	register struct buf *bp;
+	register struct bufnode *bn;
+	POSITION buf_pos;
+	POSITION end_pos;
+
+	if (thisfile == NULL || (ch_flags & CH_CANSEEK))
+		return (ch_end_seek());
+
+	end_pos = 0;
+	FOR_BUFS(bn)
+	{
+		bp = bufnode_buf(bn);
+		buf_pos = (bp->block * LBUFSIZE) + bp->datasize;
+		if (buf_pos > end_pos)
+			end_pos = buf_pos;
+	}
+
+	return (ch_seek(end_pos));
+}
+
+/*
  * Seek to the beginning of the file, or as close to it as we can get.
  * We may not be able to seek there if input is a pipe and the
  * beginning of the pipe is no longer buffered.
diff --git a/contrib/less/charset.c b/contrib/less/charset.c
index 03b38e0..4c62664 100644
--- a/contrib/less/charset.c
+++ b/contrib/less/charset.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
@@ -466,36 +466,15 @@ prutfchar(ch)
 		else
 			SNPRINTF1(buf, sizeof(buf), binfmt, (char) ch);
 	} else if (is_ubin_char(ch))
+	{
 		SNPRINTF1(buf, sizeof(buf), utfbinfmt, ch);
-	else
+	} else
 	{
-		int len;
+		char *p = buf;
 		if (ch >= 0x80000000)
-		{
-			len = 3;
-			ch = 0xFFFD;
-		} else
-		{
-			len =   (ch < 0x80) ? 1
-			      : (ch < 0x800) ? 2
-			      : (ch < 0x10000) ? 3
-			      : (ch < 0x200000) ? 4
-			      : (ch < 0x4000000) ? 5
-			      : 6;
-		}
-		buf[len] = '\0';
-		if (len == 1)
-			*buf = (char) ch;
-		else
-		{
-			*buf = ((1 << len) - 1) << (8 - len);
-			while (--len > 0)
-			{
-				buf[len] = (char) (0x80 | (ch & 0x3F));
-				ch >>= 6;
-			}
-			*buf |= ch;
-		}
+			ch = 0xFFFD; /* REPLACEMENT CHARACTER */
+		put_wchar(&p, ch);
+		*p = '\0';
 	}
 	return (buf);
 }
@@ -524,11 +503,12 @@ utf_len(ch)
 }
 
 /*
- * Is a UTF-8 character well-formed?
+ * Does the parameter point to the lead byte of a well-formed UTF-8 character?
  */
 	public int
-is_utf8_well_formed(s)
+is_utf8_well_formed(s, slen)
 	unsigned char *s;
+	int slen;
 {
 	int i;
 	int len;
@@ -537,6 +517,8 @@ is_utf8_well_formed(s)
 		return (0);
 
 	len = utf_len((char) s[0]);
+	if (len > slen)
+		return (0);
 	if (len == 1)
 		return (1);
 	if (len == 2)
@@ -558,6 +540,35 @@ is_utf8_well_formed(s)
 }
 
 /*
+ * Return number of invalid UTF-8 sequences found in a buffer.
+ */
+	public int
+utf_bin_count(data, len)
+	unsigned char *data;
+	int len;
+{
+	int bin_count = 0;
+	while (len > 0)
+	{
+		if (is_utf8_well_formed(data, len))
+		{
+			int clen = utf_len(*data);
+			data += clen;
+			len -= clen;
+		} else
+		{
+			/* Skip to next lead byte. */
+			bin_count++;
+			do {
+				++data;
+				--len;
+			} while (len > 0 && !IS_UTF8_LEAD(*data));
+		}
+	}
+	return (bin_count);
+}
+
+/*
  * Get the value of a UTF-8 character.
  */
 	public LWCHAR
@@ -706,411 +717,51 @@ step_char(pp, dir, limit)
 
 /*
  * Unicode characters data
+ * Actual data is in the generated *.uni files.
  */
-struct wchar_range { LWCHAR first, last; };
 
-/*
- * Characters with general category values
- *	Mn: Mark, Nonspacing
- *	Me: Mark, Enclosing
- * Last synched with
- *	<http://www.unicode.org/Public/5.0.0/ucd/UnicodeData-5.0.0d7.txt>
- *	dated 2005-11-30T00:58:48Z
- */
-static struct wchar_range comp_table[] = {
-	{  0x0300,  0x036F} /* Mn */, {  0x0483,  0x0486} /* Mn */,
-	{  0x0488,  0x0489} /* Me */,
-	{  0x0591,  0x05BD} /* Mn */, {  0x05BF,  0x05BF} /* Mn */,
-	{  0x05C1,  0x05C2} /* Mn */, {  0x05C4,  0x05C5} /* Mn */,
-	{  0x05C7,  0x05C7} /* Mn */, {  0x0610,  0x0615} /* Mn */,
-	{  0x064B,  0x065E} /* Mn */, {  0x0670,  0x0670} /* Mn */,
-	{  0x06D6,  0x06DC} /* Mn */,
-	{  0x06DE,  0x06DE} /* Me */,
-	{  0x06DF,  0x06E4} /* Mn */, {  0x06E7,  0x06E8} /* Mn */,
-	{  0x06EA,  0x06ED} /* Mn */, {  0x0711,  0x0711} /* Mn */,
-	{  0x0730,  0x074A} /* Mn */, {  0x07A6,  0x07B0} /* Mn */,
-	{  0x07EB,  0x07F3} /* Mn */, {  0x0901,  0x0902} /* Mn */,
-	{  0x093C,  0x093C} /* Mn */, {  0x0941,  0x0948} /* Mn */,
-	{  0x094D,  0x094D} /* Mn */, {  0x0951,  0x0954} /* Mn */,
-	{  0x0962,  0x0963} /* Mn */, {  0x0981,  0x0981} /* Mn */,
-	{  0x09BC,  0x09BC} /* Mn */, {  0x09C1,  0x09C4} /* Mn */,
-	{  0x09CD,  0x09CD} /* Mn */, {  0x09E2,  0x09E3} /* Mn */,
-	{  0x0A01,  0x0A02} /* Mn */, {  0x0A3C,  0x0A3C} /* Mn */,
-	{  0x0A41,  0x0A42} /* Mn */, {  0x0A47,  0x0A48} /* Mn */,
-	{  0x0A4B,  0x0A4D} /* Mn */, {  0x0A70,  0x0A71} /* Mn */,
-	{  0x0A81,  0x0A82} /* Mn */, {  0x0ABC,  0x0ABC} /* Mn */,
-	{  0x0AC1,  0x0AC5} /* Mn */, {  0x0AC7,  0x0AC8} /* Mn */,
-	{  0x0ACD,  0x0ACD} /* Mn */, {  0x0AE2,  0x0AE3} /* Mn */,
-	{  0x0B01,  0x0B01} /* Mn */, {  0x0B3C,  0x0B3C} /* Mn */,
-	{  0x0B3F,  0x0B3F} /* Mn */, {  0x0B41,  0x0B43} /* Mn */,
-	{  0x0B4D,  0x0B4D} /* Mn */, {  0x0B56,  0x0B56} /* Mn */,
-	{  0x0B82,  0x0B82} /* Mn */, {  0x0BC0,  0x0BC0} /* Mn */,
-	{  0x0BCD,  0x0BCD} /* Mn */, {  0x0C3E,  0x0C40} /* Mn */,
-	{  0x0C46,  0x0C48} /* Mn */, {  0x0C4A,  0x0C4D} /* Mn */,
-	{  0x0C55,  0x0C56} /* Mn */, {  0x0CBC,  0x0CBC} /* Mn */,
-	{  0x0CBF,  0x0CBF} /* Mn */, {  0x0CC6,  0x0CC6} /* Mn */,
-	{  0x0CCC,  0x0CCD} /* Mn */, {  0x0CE2,  0x0CE3} /* Mn */,
-	{  0x0D41,  0x0D43} /* Mn */, {  0x0D4D,  0x0D4D} /* Mn */,
-	{  0x0DCA,  0x0DCA} /* Mn */, {  0x0DD2,  0x0DD4} /* Mn */,
-	{  0x0DD6,  0x0DD6} /* Mn */, {  0x0E31,  0x0E31} /* Mn */,
-	{  0x0E34,  0x0E3A} /* Mn */, {  0x0E47,  0x0E4E} /* Mn */,
-	{  0x0EB1,  0x0EB1} /* Mn */, {  0x0EB4,  0x0EB9} /* Mn */,
-	{  0x0EBB,  0x0EBC} /* Mn */, {  0x0EC8,  0x0ECD} /* Mn */,
-	{  0x0F18,  0x0F19} /* Mn */, {  0x0F35,  0x0F35} /* Mn */,
-	{  0x0F37,  0x0F37} /* Mn */, {  0x0F39,  0x0F39} /* Mn */,
-	{  0x0F71,  0x0F7E} /* Mn */, {  0x0F80,  0x0F84} /* Mn */,
-	{  0x0F86,  0x0F87} /* Mn */, {  0x0F90,  0x0F97} /* Mn */,
-	{  0x0F99,  0x0FBC} /* Mn */, {  0x0FC6,  0x0FC6} /* Mn */,
-	{  0x102D,  0x1030} /* Mn */, {  0x1032,  0x1032} /* Mn */,
-	{  0x1036,  0x1037} /* Mn */, {  0x1039,  0x1039} /* Mn */,
-	{  0x1058,  0x1059} /* Mn */, {  0x135F,  0x135F} /* Mn */,
-	{  0x1712,  0x1714} /* Mn */, {  0x1732,  0x1734} /* Mn */,
-	{  0x1752,  0x1753} /* Mn */, {  0x1772,  0x1773} /* Mn */,
-	{  0x17B7,  0x17BD} /* Mn */, {  0x17C6,  0x17C6} /* Mn */,
-	{  0x17C9,  0x17D3} /* Mn */, {  0x17DD,  0x17DD} /* Mn */,
-	{  0x180B,  0x180D} /* Mn */, {  0x18A9,  0x18A9} /* Mn */,
-	{  0x1920,  0x1922} /* Mn */, {  0x1927,  0x1928} /* Mn */,
-	{  0x1932,  0x1932} /* Mn */, {  0x1939,  0x193B} /* Mn */,
-	{  0x1A17,  0x1A18} /* Mn */, {  0x1B00,  0x1B03} /* Mn */,
-	{  0x1B34,  0x1B34} /* Mn */, {  0x1B36,  0x1B3A} /* Mn */,
-	{  0x1B3C,  0x1B3C} /* Mn */, {  0x1B42,  0x1B42} /* Mn */,
-	{  0x1B6B,  0x1B73} /* Mn */, {  0x1DC0,  0x1DCA} /* Mn */,
-	{  0x1DFE,  0x1DFF} /* Mn */, {  0x20D0,  0x20DC} /* Mn */,
-	{  0x20DD,  0x20E0} /* Me */,
-	{  0x20E1,  0x20E1} /* Mn */,
-	{  0x20E2,  0x20E4} /* Me */,
-	{  0x20E5,  0x20EF} /* Mn */, {  0x302A,  0x302F} /* Mn */,
-	{  0x3099,  0x309A} /* Mn */, {  0xA806,  0xA806} /* Mn */,
-	{  0xA80B,  0xA80B} /* Mn */, {  0xA825,  0xA826} /* Mn */,
-	{  0xFB1E,  0xFB1E} /* Mn */, {  0xFE00,  0xFE0F} /* Mn */,
-	{  0xFE20,  0xFE23} /* Mn */, { 0x10A01, 0x10A03} /* Mn */,
-	{ 0x10A05, 0x10A06} /* Mn */, { 0x10A0C, 0x10A0F} /* Mn */,
-	{ 0x10A38, 0x10A3A} /* Mn */, { 0x10A3F, 0x10A3F} /* Mn */,
-	{ 0x1D167, 0x1D169} /* Mn */, { 0x1D17B, 0x1D182} /* Mn */,
-	{ 0x1D185, 0x1D18B} /* Mn */, { 0x1D1AA, 0x1D1AD} /* Mn */,
-	{ 0x1D242, 0x1D244} /* Mn */, { 0xE0100, 0xE01EF} /* Mn */,
-};
+#define DECLARE_RANGE_TABLE_START(name) \
+    static struct wchar_range name##_array[] = {
+#define DECLARE_RANGE_TABLE_END(name) \
+    }; struct wchar_range_table name##_table = { name##_array, sizeof(name##_array)/sizeof(*name##_array) };
 
-/*
- * Special pairs, not ranges.
- */
+DECLARE_RANGE_TABLE_START(compose)
+#include "compose.uni"
+DECLARE_RANGE_TABLE_END(compose)
+
+DECLARE_RANGE_TABLE_START(ubin)
+#include "ubin.uni"
+DECLARE_RANGE_TABLE_END(ubin)
+
+DECLARE_RANGE_TABLE_START(wide)
+#include "wide.uni"
+DECLARE_RANGE_TABLE_END(wide)
+
+/* comb_table is special pairs, not ranges. */
 static struct wchar_range comb_table[] = {
 	{0x0644,0x0622}, {0x0644,0x0623}, {0x0644,0x0625}, {0x0644,0x0627},
 };
 
-/*
- * Characters with general category values
- *	Cc: Other, Control
- *	Cf: Other, Format
- *	Cs: Other, Surrogate
- *	Co: Other, Private Use
- *	Cn: Other, Not Assigned
- *	Zl: Separator, Line
- *	Zp: Separator, Paragraph
- * Last synched with
- *	<http://www.unicode.org/Public/5.0.0/ucd/UnicodeData-5.0.0d7.txt>
- *	dated 2005-11-30T00:58:48Z
- */
-static struct wchar_range ubin_table[] = {
-	{  0x0000,  0x0007} /* Cc */, 
-	{  0x000B,  0x000C} /* Cc */, 
-	{  0x000E,  0x001A} /* Cc */, 
-	{  0x001C,  0x001F} /* Cc */, 
-	{  0x007F,  0x009F} /* Cc */,
-#if 0
-	{  0x00AD,  0x00AD} /* Cf */,
-#endif
-	{  0x0370,  0x0373} /* Cn */, {  0x0376,  0x0379} /* Cn */,
-	{  0x037F,  0x0383} /* Cn */, {  0x038B,  0x038B} /* Cn */,
-	{  0x038D,  0x038D} /* Cn */, {  0x03A2,  0x03A2} /* Cn */,
-	{  0x03CF,  0x03CF} /* Cn */, {  0x0487,  0x0487} /* Cn */,
-	{  0x0514,  0x0530} /* Cn */, {  0x0557,  0x0558} /* Cn */,
-	{  0x0560,  0x0560} /* Cn */, {  0x0588,  0x0588} /* Cn */,
-	{  0x058B,  0x0590} /* Cn */, {  0x05C8,  0x05CF} /* Cn */,
-	{  0x05EB,  0x05EF} /* Cn */, {  0x05F5,  0x05FF} /* Cn */,
-#if 0
-	{  0x0600,  0x0603} /* Cf */,
-#endif
-	{  0x0604,  0x060A} /* Cn */, {  0x0616,  0x061A} /* Cn */,
-	{  0x061C,  0x061D} /* Cn */, {  0x0620,  0x0620} /* Cn */,
-	{  0x063B,  0x063F} /* Cn */, {  0x065F,  0x065F} /* Cn */,
-#if 0
-	{  0x06DD,  0x06DD} /* Cf */,
-#endif
-	{  0x070E,  0x070E} /* Cn */,
-#if 0
-	{  0x070F,  0x070F} /* Cf */,
-#endif
-	{  0x074B,  0x074C} /* Cn */, {  0x076E,  0x077F} /* Cn */,
-	{  0x07B2,  0x07BF} /* Cn */, {  0x07FB,  0x0900} /* Cn */,
-	{  0x093A,  0x093B} /* Cn */, {  0x094E,  0x094F} /* Cn */,
-	{  0x0955,  0x0957} /* Cn */, {  0x0971,  0x097A} /* Cn */,
-	{  0x0980,  0x0980} /* Cn */, {  0x0984,  0x0984} /* Cn */,
-	{  0x098D,  0x098E} /* Cn */, {  0x0991,  0x0992} /* Cn */,
-	{  0x09A9,  0x09A9} /* Cn */, {  0x09B1,  0x09B1} /* Cn */,
-	{  0x09B3,  0x09B5} /* Cn */, {  0x09BA,  0x09BB} /* Cn */,
-	{  0x09C5,  0x09C6} /* Cn */, {  0x09C9,  0x09CA} /* Cn */,
-	{  0x09CF,  0x09D6} /* Cn */, {  0x09D8,  0x09DB} /* Cn */,
-	{  0x09DE,  0x09DE} /* Cn */, {  0x09E4,  0x09E5} /* Cn */,
-	{  0x09FB,  0x0A00} /* Cn */, {  0x0A04,  0x0A04} /* Cn */,
-	{  0x0A0B,  0x0A0E} /* Cn */, {  0x0A11,  0x0A12} /* Cn */,
-	{  0x0A29,  0x0A29} /* Cn */, {  0x0A31,  0x0A31} /* Cn */,
-	{  0x0A34,  0x0A34} /* Cn */, {  0x0A37,  0x0A37} /* Cn */,
-	{  0x0A3A,  0x0A3B} /* Cn */, {  0x0A3D,  0x0A3D} /* Cn */,
-	{  0x0A43,  0x0A46} /* Cn */, {  0x0A49,  0x0A4A} /* Cn */,
-	{  0x0A4E,  0x0A58} /* Cn */, {  0x0A5D,  0x0A5D} /* Cn */,
-	{  0x0A5F,  0x0A65} /* Cn */, {  0x0A75,  0x0A80} /* Cn */,
-	{  0x0A84,  0x0A84} /* Cn */, {  0x0A8E,  0x0A8E} /* Cn */,
-	{  0x0A92,  0x0A92} /* Cn */, {  0x0AA9,  0x0AA9} /* Cn */,
-	{  0x0AB1,  0x0AB1} /* Cn */, {  0x0AB4,  0x0AB4} /* Cn */,
-	{  0x0ABA,  0x0ABB} /* Cn */, {  0x0AC6,  0x0AC6} /* Cn */,
-	{  0x0ACA,  0x0ACA} /* Cn */, {  0x0ACE,  0x0ACF} /* Cn */,
-	{  0x0AD1,  0x0ADF} /* Cn */, {  0x0AE4,  0x0AE5} /* Cn */,
-	{  0x0AF0,  0x0AF0} /* Cn */, {  0x0AF2,  0x0B00} /* Cn */,
-	{  0x0B04,  0x0B04} /* Cn */, {  0x0B0D,  0x0B0E} /* Cn */,
-	{  0x0B11,  0x0B12} /* Cn */, {  0x0B29,  0x0B29} /* Cn */,
-	{  0x0B31,  0x0B31} /* Cn */, {  0x0B34,  0x0B34} /* Cn */,
-	{  0x0B3A,  0x0B3B} /* Cn */, {  0x0B44,  0x0B46} /* Cn */,
-	{  0x0B49,  0x0B4A} /* Cn */, {  0x0B4E,  0x0B55} /* Cn */,
-	{  0x0B58,  0x0B5B} /* Cn */, {  0x0B5E,  0x0B5E} /* Cn */,
-	{  0x0B62,  0x0B65} /* Cn */, {  0x0B72,  0x0B81} /* Cn */,
-	{  0x0B84,  0x0B84} /* Cn */, {  0x0B8B,  0x0B8D} /* Cn */,
-	{  0x0B91,  0x0B91} /* Cn */, {  0x0B96,  0x0B98} /* Cn */,
-	{  0x0B9B,  0x0B9B} /* Cn */, {  0x0B9D,  0x0B9D} /* Cn */,
-	{  0x0BA0,  0x0BA2} /* Cn */, {  0x0BA5,  0x0BA7} /* Cn */,
-	{  0x0BAB,  0x0BAD} /* Cn */, {  0x0BBA,  0x0BBD} /* Cn */,
-	{  0x0BC3,  0x0BC5} /* Cn */, {  0x0BC9,  0x0BC9} /* Cn */,
-	{  0x0BCE,  0x0BD6} /* Cn */, {  0x0BD8,  0x0BE5} /* Cn */,
-	{  0x0BFB,  0x0C00} /* Cn */, {  0x0C04,  0x0C04} /* Cn */,
-	{  0x0C0D,  0x0C0D} /* Cn */, {  0x0C11,  0x0C11} /* Cn */,
-	{  0x0C29,  0x0C29} /* Cn */, {  0x0C34,  0x0C34} /* Cn */,
-	{  0x0C3A,  0x0C3D} /* Cn */, {  0x0C45,  0x0C45} /* Cn */,
-	{  0x0C49,  0x0C49} /* Cn */, {  0x0C4E,  0x0C54} /* Cn */,
-	{  0x0C57,  0x0C5F} /* Cn */, {  0x0C62,  0x0C65} /* Cn */,
-	{  0x0C70,  0x0C81} /* Cn */, {  0x0C84,  0x0C84} /* Cn */,
-	{  0x0C8D,  0x0C8D} /* Cn */, {  0x0C91,  0x0C91} /* Cn */,
-	{  0x0CA9,  0x0CA9} /* Cn */, {  0x0CB4,  0x0CB4} /* Cn */,
-	{  0x0CBA,  0x0CBB} /* Cn */, {  0x0CC5,  0x0CC5} /* Cn */,
-	{  0x0CC9,  0x0CC9} /* Cn */, {  0x0CCE,  0x0CD4} /* Cn */,
-	{  0x0CD7,  0x0CDD} /* Cn */, {  0x0CDF,  0x0CDF} /* Cn */,
-	{  0x0CE4,  0x0CE5} /* Cn */, {  0x0CF0,  0x0CF0} /* Cn */,
-	{  0x0CF3,  0x0D01} /* Cn */, {  0x0D04,  0x0D04} /* Cn */,
-	{  0x0D0D,  0x0D0D} /* Cn */, {  0x0D11,  0x0D11} /* Cn */,
-	{  0x0D29,  0x0D29} /* Cn */, {  0x0D3A,  0x0D3D} /* Cn */,
-	{  0x0D44,  0x0D45} /* Cn */, {  0x0D49,  0x0D49} /* Cn */,
-	{  0x0D4E,  0x0D56} /* Cn */, {  0x0D58,  0x0D5F} /* Cn */,
-	{  0x0D62,  0x0D65} /* Cn */, {  0x0D70,  0x0D81} /* Cn */,
-	{  0x0D84,  0x0D84} /* Cn */, {  0x0D97,  0x0D99} /* Cn */,
-	{  0x0DB2,  0x0DB2} /* Cn */, {  0x0DBC,  0x0DBC} /* Cn */,
-	{  0x0DBE,  0x0DBF} /* Cn */, {  0x0DC7,  0x0DC9} /* Cn */,
-	{  0x0DCB,  0x0DCE} /* Cn */, {  0x0DD5,  0x0DD5} /* Cn */,
-	{  0x0DD7,  0x0DD7} /* Cn */, {  0x0DE0,  0x0DF1} /* Cn */,
-	{  0x0DF5,  0x0E00} /* Cn */, {  0x0E3B,  0x0E3E} /* Cn */,
-	{  0x0E5C,  0x0E80} /* Cn */, {  0x0E83,  0x0E83} /* Cn */,
-	{  0x0E85,  0x0E86} /* Cn */, {  0x0E89,  0x0E89} /* Cn */,
-	{  0x0E8B,  0x0E8C} /* Cn */, {  0x0E8E,  0x0E93} /* Cn */,
-	{  0x0E98,  0x0E98} /* Cn */, {  0x0EA0,  0x0EA0} /* Cn */,
-	{  0x0EA4,  0x0EA4} /* Cn */, {  0x0EA6,  0x0EA6} /* Cn */,
-	{  0x0EA8,  0x0EA9} /* Cn */, {  0x0EAC,  0x0EAC} /* Cn */,
-	{  0x0EBA,  0x0EBA} /* Cn */, {  0x0EBE,  0x0EBF} /* Cn */,
-	{  0x0EC5,  0x0EC5} /* Cn */, {  0x0EC7,  0x0EC7} /* Cn */,
-	{  0x0ECE,  0x0ECF} /* Cn */, {  0x0EDA,  0x0EDB} /* Cn */,
-	{  0x0EDE,  0x0EFF} /* Cn */, {  0x0F48,  0x0F48} /* Cn */,
-	{  0x0F6B,  0x0F70} /* Cn */, {  0x0F8C,  0x0F8F} /* Cn */,
-	{  0x0F98,  0x0F98} /* Cn */, {  0x0FBD,  0x0FBD} /* Cn */,
-	{  0x0FCD,  0x0FCE} /* Cn */, {  0x0FD2,  0x0FFF} /* Cn */,
-	{  0x1022,  0x1022} /* Cn */, {  0x1028,  0x1028} /* Cn */,
-	{  0x102B,  0x102B} /* Cn */, {  0x1033,  0x1035} /* Cn */,
-	{  0x103A,  0x103F} /* Cn */, {  0x105A,  0x109F} /* Cn */,
-	{  0x10C6,  0x10CF} /* Cn */, {  0x10FD,  0x10FF} /* Cn */,
-	{  0x115A,  0x115E} /* Cn */, {  0x11A3,  0x11A7} /* Cn */,
-	{  0x11FA,  0x11FF} /* Cn */, {  0x1249,  0x1249} /* Cn */,
-	{  0x124E,  0x124F} /* Cn */, {  0x1257,  0x1257} /* Cn */,
-	{  0x1259,  0x1259} /* Cn */, {  0x125E,  0x125F} /* Cn */,
-	{  0x1289,  0x1289} /* Cn */, {  0x128E,  0x128F} /* Cn */,
-	{  0x12B1,  0x12B1} /* Cn */, {  0x12B6,  0x12B7} /* Cn */,
-	{  0x12BF,  0x12BF} /* Cn */, {  0x12C1,  0x12C1} /* Cn */,
-	{  0x12C6,  0x12C7} /* Cn */, {  0x12D7,  0x12D7} /* Cn */,
-	{  0x1311,  0x1311} /* Cn */, {  0x1316,  0x1317} /* Cn */,
-	{  0x135B,  0x135E} /* Cn */, {  0x137D,  0x137F} /* Cn */,
-	{  0x139A,  0x139F} /* Cn */, {  0x13F5,  0x1400} /* Cn */,
-	{  0x1677,  0x167F} /* Cn */, {  0x169D,  0x169F} /* Cn */,
-	{  0x16F1,  0x16FF} /* Cn */, {  0x170D,  0x170D} /* Cn */,
-	{  0x1715,  0x171F} /* Cn */, {  0x1737,  0x173F} /* Cn */,
-	{  0x1754,  0x175F} /* Cn */, {  0x176D,  0x176D} /* Cn */,
-	{  0x1771,  0x1771} /* Cn */, {  0x1774,  0x177F} /* Cn */,
-#if 0
-	{  0x17B4,  0x17B5} /* Cf */,
-#endif
-	{  0x17DE,  0x17DF} /* Cn */, {  0x17EA,  0x17EF} /* Cn */,
-	{  0x17FA,  0x17FF} /* Cn */, {  0x180F,  0x180F} /* Cn */,
-	{  0x181A,  0x181F} /* Cn */, {  0x1878,  0x187F} /* Cn */,
-	{  0x18AA,  0x18FF} /* Cn */, {  0x191D,  0x191F} /* Cn */,
-	{  0x192C,  0x192F} /* Cn */, {  0x193C,  0x193F} /* Cn */,
-	{  0x1941,  0x1943} /* Cn */, {  0x196E,  0x196F} /* Cn */,
-	{  0x1975,  0x197F} /* Cn */, {  0x19AA,  0x19AF} /* Cn */,
-	{  0x19CA,  0x19CF} /* Cn */, {  0x19DA,  0x19DD} /* Cn */,
-	{  0x1A1C,  0x1A1D} /* Cn */, {  0x1A20,  0x1AFF} /* Cn */,
-	{  0x1B4C,  0x1B4F} /* Cn */, {  0x1B7D,  0x1CFF} /* Cn */,
-	{  0x1DCB,  0x1DFD} /* Cn */, {  0x1E9C,  0x1E9F} /* Cn */,
-	{  0x1EFA,  0x1EFF} /* Cn */, {  0x1F16,  0x1F17} /* Cn */,
-	{  0x1F1E,  0x1F1F} /* Cn */, {  0x1F46,  0x1F47} /* Cn */,
-	{  0x1F4E,  0x1F4F} /* Cn */, {  0x1F58,  0x1F58} /* Cn */,
-	{  0x1F5A,  0x1F5A} /* Cn */, {  0x1F5C,  0x1F5C} /* Cn */,
-	{  0x1F5E,  0x1F5E} /* Cn */, {  0x1F7E,  0x1F7F} /* Cn */,
-	{  0x1FB5,  0x1FB5} /* Cn */, {  0x1FC5,  0x1FC5} /* Cn */,
-	{  0x1FD4,  0x1FD5} /* Cn */, {  0x1FDC,  0x1FDC} /* Cn */,
-	{  0x1FF0,  0x1FF1} /* Cn */, {  0x1FF5,  0x1FF5} /* Cn */,
-	{  0x1FFF,  0x1FFF} /* Cn */,
-	{  0x200B,  0x200F} /* Cf */,
-	{  0x2028,  0x2028} /* Zl */,
-	{  0x2029,  0x2029} /* Zp */,
-	{  0x202A,  0x202E} /* Cf */,
-	{  0x2060,  0x2063} /* Cf */,
-	{  0x2064,  0x2069} /* Cn */,
-	{  0x206A,  0x206F} /* Cf */,
-	{  0x2072,  0x2073} /* Cn */, {  0x208F,  0x208F} /* Cn */,
-	{  0x2095,  0x209F} /* Cn */, {  0x20B6,  0x20CF} /* Cn */,
-	{  0x20F0,  0x20FF} /* Cn */, {  0x214F,  0x2152} /* Cn */,
-	{  0x2185,  0x218F} /* Cn */, {  0x23E8,  0x23FF} /* Cn */,
-	{  0x2427,  0x243F} /* Cn */, {  0x244B,  0x245F} /* Cn */,
-	{  0x269D,  0x269F} /* Cn */, {  0x26B3,  0x2700} /* Cn */,
-	{  0x2705,  0x2705} /* Cn */, {  0x270A,  0x270B} /* Cn */,
-	{  0x2728,  0x2728} /* Cn */, {  0x274C,  0x274C} /* Cn */,
-	{  0x274E,  0x274E} /* Cn */, {  0x2753,  0x2755} /* Cn */,
-	{  0x2757,  0x2757} /* Cn */, {  0x275F,  0x2760} /* Cn */,
-	{  0x2795,  0x2797} /* Cn */, {  0x27B0,  0x27B0} /* Cn */,
-	{  0x27BF,  0x27BF} /* Cn */, {  0x27CB,  0x27CF} /* Cn */,
-	{  0x27EC,  0x27EF} /* Cn */, {  0x2B1B,  0x2B1F} /* Cn */,
-	{  0x2B24,  0x2BFF} /* Cn */, {  0x2C2F,  0x2C2F} /* Cn */,
-	{  0x2C5F,  0x2C5F} /* Cn */, {  0x2C6D,  0x2C73} /* Cn */,
-	{  0x2C78,  0x2C7F} /* Cn */, {  0x2CEB,  0x2CF8} /* Cn */,
-	{  0x2D26,  0x2D2F} /* Cn */, {  0x2D66,  0x2D6E} /* Cn */,
-	{  0x2D70,  0x2D7F} /* Cn */, {  0x2D97,  0x2D9F} /* Cn */,
-	{  0x2DA7,  0x2DA7} /* Cn */, {  0x2DAF,  0x2DAF} /* Cn */,
-	{  0x2DB7,  0x2DB7} /* Cn */, {  0x2DBF,  0x2DBF} /* Cn */,
-	{  0x2DC7,  0x2DC7} /* Cn */, {  0x2DCF,  0x2DCF} /* Cn */,
-	{  0x2DD7,  0x2DD7} /* Cn */, {  0x2DDF,  0x2DFF} /* Cn */,
-	{  0x2E18,  0x2E1B} /* Cn */, {  0x2E1E,  0x2E7F} /* Cn */,
-	{  0x2E9A,  0x2E9A} /* Cn */, {  0x2EF4,  0x2EFF} /* Cn */,
-	{  0x2FD6,  0x2FEF} /* Cn */, {  0x2FFC,  0x2FFF} /* Cn */,
-	{  0x3040,  0x3040} /* Cn */, {  0x3097,  0x3098} /* Cn */,
-	{  0x3100,  0x3104} /* Cn */, {  0x312D,  0x3130} /* Cn */,
-	{  0x318F,  0x318F} /* Cn */, {  0x31B8,  0x31BF} /* Cn */,
-	{  0x31D0,  0x31EF} /* Cn */, {  0x321F,  0x321F} /* Cn */,
-	{  0x3244,  0x324F} /* Cn */, {  0x32FF,  0x32FF} /* Cn */,
-	{  0x4DB6,  0x4DBF} /* Cn */, {  0x9FBC,  0x9FFF} /* Cn */,
-	{  0xA48D,  0xA48F} /* Cn */, {  0xA4C7,  0xA6FF} /* Cn */,
-	{  0xA71B,  0xA71F} /* Cn */, {  0xA722,  0xA7FF} /* Cn */,
-	{  0xA82C,  0xA83F} /* Cn */, {  0xA878,  0xABFF} /* Cn */,
-	{  0xD7A4,  0xD7FF} /* Cn */,
-	{  0xD800,  0xDFFF} /* Cs */,
-	{  0xE000,  0xF8FF} /* Co */,
-	{  0xFA2E,  0xFA2F} /* Cn */, {  0xFA6B,  0xFA6F} /* Cn */,
-	{  0xFADA,  0xFAFF} /* Cn */, {  0xFB07,  0xFB12} /* Cn */,
-	{  0xFB18,  0xFB1C} /* Cn */, {  0xFB37,  0xFB37} /* Cn */,
-	{  0xFB3D,  0xFB3D} /* Cn */, {  0xFB3F,  0xFB3F} /* Cn */,
-	{  0xFB42,  0xFB42} /* Cn */, {  0xFB45,  0xFB45} /* Cn */,
-	{  0xFBB2,  0xFBD2} /* Cn */, {  0xFD40,  0xFD4F} /* Cn */,
-	{  0xFD90,  0xFD91} /* Cn */, {  0xFDC8,  0xFDEF} /* Cn */,
-	{  0xFDFE,  0xFDFF} /* Cn */, {  0xFE1A,  0xFE1F} /* Cn */,
-	{  0xFE24,  0xFE2F} /* Cn */, {  0xFE53,  0xFE53} /* Cn */,
-	{  0xFE67,  0xFE67} /* Cn */, {  0xFE6C,  0xFE6F} /* Cn */,
-	{  0xFE75,  0xFE75} /* Cn */, {  0xFEFD,  0xFEFE} /* Cn */,
-	{  0xFEFF,  0xFEFF} /* Cf */,
-	{  0xFF00,  0xFF00} /* Cn */, {  0xFFBF,  0xFFC1} /* Cn */,
-	{  0xFFC8,  0xFFC9} /* Cn */, {  0xFFD0,  0xFFD1} /* Cn */,
-	{  0xFFD8,  0xFFD9} /* Cn */, {  0xFFDD,  0xFFDF} /* Cn */,
-	{  0xFFE7,  0xFFE7} /* Cn */, {  0xFFEF,  0xFFF8} /* Cn */,
-	{  0xFFF9,  0xFFFB} /* Cf */,
-	{  0xFFFE,  0xFFFF} /* Cn */, { 0x1000C, 0x1000C} /* Cn */,
-	{ 0x10027, 0x10027} /* Cn */, { 0x1003B, 0x1003B} /* Cn */,
-	{ 0x1003E, 0x1003E} /* Cn */, { 0x1004E, 0x1004F} /* Cn */,
-	{ 0x1005E, 0x1007F} /* Cn */, { 0x100FB, 0x100FF} /* Cn */,
-	{ 0x10103, 0x10106} /* Cn */, { 0x10134, 0x10136} /* Cn */,
-	{ 0x1018B, 0x102FF} /* Cn */, { 0x1031F, 0x1031F} /* Cn */,
-	{ 0x10324, 0x1032F} /* Cn */, { 0x1034B, 0x1037F} /* Cn */,
-	{ 0x1039E, 0x1039E} /* Cn */, { 0x103C4, 0x103C7} /* Cn */,
-	{ 0x103D6, 0x103FF} /* Cn */,
-	{ 0x1049E, 0x1049F} /* Cn */, { 0x104AA, 0x107FF} /* Cn */,
-	{ 0x10806, 0x10807} /* Cn */, { 0x10809, 0x10809} /* Cn */,
-	{ 0x10836, 0x10836} /* Cn */, { 0x10839, 0x1083B} /* Cn */,
-	{ 0x1083D, 0x1083E} /* Cn */, { 0x10840, 0x108FF} /* Cn */,
-	{ 0x1091A, 0x1091E} /* Cn */, { 0x10920, 0x109FF} /* Cn */,
-	{ 0x10A04, 0x10A04} /* Cn */, { 0x10A07, 0x10A0B} /* Cn */,
-	{ 0x10A14, 0x10A14} /* Cn */, { 0x10A18, 0x10A18} /* Cn */,
-	{ 0x10A34, 0x10A37} /* Cn */, { 0x10A3B, 0x10A3E} /* Cn */,
-	{ 0x10A48, 0x10A4F} /* Cn */, { 0x10A59, 0x11FFF} /* Cn */,
-	{ 0x1236F, 0x123FF} /* Cn */, { 0x12463, 0x1246F} /* Cn */,
-	{ 0x12474, 0x1CFFF} /* Cn */, { 0x1D0F6, 0x1D0FF} /* Cn */,
-	{ 0x1D127, 0x1D129} /* Cn */,
-	{ 0x1D173, 0x1D17A} /* Cf */,
-	{ 0x1D1DE, 0x1D1FF} /* Cn */, { 0x1D246, 0x1D2FF} /* Cn */,
-	{ 0x1D357, 0x1D35F} /* Cn */, { 0x1D372, 0x1D3FF} /* Cn */,
-	{ 0x1D455, 0x1D455} /* Cn */, { 0x1D49D, 0x1D49D} /* Cn */,
-	{ 0x1D4A0, 0x1D4A1} /* Cn */, { 0x1D4A3, 0x1D4A4} /* Cn */,
-	{ 0x1D4A7, 0x1D4A8} /* Cn */, { 0x1D4AD, 0x1D4AD} /* Cn */,
-	{ 0x1D4BA, 0x1D4BA} /* Cn */, { 0x1D4BC, 0x1D4BC} /* Cn */,
-	{ 0x1D4C4, 0x1D4C4} /* Cn */, { 0x1D506, 0x1D506} /* Cn */,
-	{ 0x1D50B, 0x1D50C} /* Cn */, { 0x1D515, 0x1D515} /* Cn */,
-	{ 0x1D51D, 0x1D51D} /* Cn */, { 0x1D53A, 0x1D53A} /* Cn */,
-	{ 0x1D53F, 0x1D53F} /* Cn */, { 0x1D545, 0x1D545} /* Cn */,
-	{ 0x1D547, 0x1D549} /* Cn */, { 0x1D551, 0x1D551} /* Cn */,
-	{ 0x1D6A6, 0x1D6A7} /* Cn */, { 0x1D7CC, 0x1D7CD} /* Cn */,
-	{ 0x1D800, 0x1FFFF} /* Cn */, { 0x2A6D7, 0x2F7FF} /* Cn */,
-	{ 0x2FA1E, 0xE0000} /* Cn */,
-	{ 0xE0001, 0xE0001} /* Cf */,
-	{ 0xE0002, 0xE001F} /* Cn */,
-	{ 0xE0020, 0xE007F} /* Cf */,
-	{ 0xE0080, 0xE00FF} /* Cn */, { 0xE01F0, 0xEFFFF} /* Cn */,
-	{ 0xF0000, 0xFFFFD} /* Co */,
-	{ 0xFFFFE, 0xFFFFF} /* Cn */,
-	{0x100000,0x10FFFD} /* Co */,
-	{0x10FFFE,0x10FFFF} /* Cn */,
-	{0x110000,0x7FFFFFFF} /* ISO 10646?? */
-};
-
-/*
- * Double width characters
- *	W: East Asian Wide
- *	F: East Asian Full-width
- * Unassigned code points may be included when they allow ranges to be merged.
- * Last synched with
- *	<http://www.unicode.org/Public/5.0.0/ucd/EastAsianWidth-5.0.0d2.txt>
- *	dated 2005-11-08T01:32:56Z
- */
-static struct wchar_range wide_table[] = {
-	{  0x1100,  0x115F} /* W */, {  0x2329,  0x232A} /* W */,
-	{  0x2E80,  0x2FFB} /* W */,
-	{  0x3000,  0x3000} /* F */,
-	{  0x3001,  0x303E} /* W */, {  0x3041,  0x4DB5} /* W */,
-	{  0x4E00,  0x9FBB} /* W */, {  0xA000,  0xA4C6} /* W */,
-	{  0xAC00,  0xD7A3} /* W */, {  0xF900,  0xFAD9} /* W */,
-	{  0xFE10,  0xFE19} /* W */, {  0xFE30,  0xFE6B} /* W */,
-	{  0xFF01,  0xFF60} /* F */, {  0xFFE0,  0xFFE6} /* F */,
-	{ 0x20000, 0x2FFFD} /* W */, { 0x30000, 0x3FFFD} /* W */,
-};
 
 	static int
-is_in_table(ch, table, tsize)
+is_in_table(ch, table)
 	LWCHAR ch;
-	struct wchar_range table[];
-	int tsize;
+	struct wchar_range_table *table;
 {
 	int hi;
 	int lo;
 
 	/* Binary search in the table. */
-	if (ch < table[0].first)
+	if (ch < table->table[0].first)
 		return 0;
 	lo = 0;
-	hi = tsize - 1;
+	hi = table->count - 1;
 	while (lo <= hi)
 	{
 		int mid = (lo + hi) / 2;
-		if (ch > table[mid].last)
+		if (ch > table->table[mid].last)
 			lo = mid + 1;
-		else if (ch < table[mid].first)
+		else if (ch < table->table[mid].first)
 			hi = mid - 1;
 		else
 			return 1;
@@ -1126,7 +777,7 @@ is_in_table(ch, table, tsize)
 is_composing_char(ch)
 	LWCHAR ch;
 {
-	return is_in_table(ch, comp_table, (sizeof(comp_table) / sizeof(*comp_table)));
+	return is_in_table(ch, &compose_table);
 }
 
 /*
@@ -1136,7 +787,7 @@ is_composing_char(ch)
 is_ubin_char(ch)
 	LWCHAR ch;
 {
-	return is_in_table(ch, ubin_table, (sizeof(ubin_table) / sizeof(*ubin_table)));
+	return is_in_table(ch, &ubin_table);
 }
 
 /*
@@ -1146,7 +797,7 @@ is_ubin_char(ch)
 is_wide_char(ch)
 	LWCHAR ch;
 {
-	return is_in_table(ch, wide_table, (sizeof(wide_table) / sizeof(*wide_table)));
+	return is_in_table(ch, &wide_table);
 }
 
 /*
diff --git a/contrib/less/charset.h b/contrib/less/charset.h
index 7df4df6..bb1e437 100644
--- a/contrib/less/charset.h
+++ b/contrib/less/charset.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
diff --git a/contrib/less/cmd.h b/contrib/less/cmd.h
index 9a72160..8a943d1 100644
--- a/contrib/less/cmd.h
+++ b/contrib/less/cmd.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
@@ -66,6 +66,7 @@
 #define	A_PREV_TAG		54
 #define	A_FILTER		55
 #define	A_F_UNTIL_HILITE	56
+#define	A_GOEND_BUF		57
 
 #define	A_INVALID		100
 #define	A_NOACTION		101
diff --git a/contrib/less/cmdbuf.c b/contrib/less/cmdbuf.c
index e387ccc..69d7414 100644
--- a/contrib/less/cmdbuf.c
+++ b/contrib/less/cmdbuf.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
@@ -203,7 +203,7 @@ cmd_step_common(p, ch, len, pwidth, bswidth)
 		pr = prchar((int) ch);
 		if (pwidth != NULL || bswidth != NULL)
 		{
-			int len = strlen(pr);
+			int len = (int) strlen(pr);
 			if (pwidth != NULL)
 				*pwidth = len;
 			if (bswidth != NULL)
@@ -222,7 +222,7 @@ cmd_step_common(p, ch, len, pwidth, bswidth)
 					*bswidth = 0;
 			} else if (is_ubin_char(ch))
 			{
-				int len = strlen(pr);
+				int len = (int) strlen(pr);
 				if (pwidth != NULL)
 					*pwidth = len;
 				if (bswidth != NULL)
@@ -375,7 +375,7 @@ cmd_lshift()
 		s = ns;
 	}
 
-	cmd_offset = s - cmdbuf;
+	cmd_offset = (int) (s - cmdbuf);
 	save_cp = cp;
 	cmd_home();
 	cmd_repaint(save_cp);
@@ -405,7 +405,7 @@ cmd_rshift()
 		cols += width;
 	}
 
-	cmd_offset = s - cmdbuf;
+	cmd_offset = (int) (s - cmdbuf);
 	save_cp = cp;
 	cmd_home();
 	cmd_repaint(save_cp);
@@ -535,7 +535,7 @@ cmd_erase()
 	 */
 	s = cp;
 	cmd_left();
-	clen = s - cp;
+	clen = (int) (s - cp);
 
 	/*
 	 * Remove the char from the buffer (shift the buffer left).
@@ -701,7 +701,7 @@ cmd_updown(action)
 
 	if (updown_match < 0)
 	{
-		updown_match = cp - cmdbuf;
+		updown_match = (int) (cp - cmdbuf);
 	}
 
 	/*
@@ -744,12 +744,13 @@ cmd_updown(action)
 #endif
 
 /*
- * Add a string to a history list.
+ * Add a string to an mlist.
  */
 	public void
-cmd_addhist(mlist, cmd)
+cmd_addhist(mlist, cmd, modified)
 	struct mlist *mlist;
 	char *cmd;
+	int modified;
 {
 #if CMD_HISTORY
 	struct mlist *ml;
@@ -773,6 +774,7 @@ cmd_addhist(mlist, cmd)
 		 */
 		ml = (struct mlist *) ecalloc(1, sizeof(struct mlist));
 		ml->string = save(cmd);
+		ml->modified = modified;
 		ml->next = mlist;
 		ml->prev = mlist->prev;
 		mlist->prev->next = ml;
@@ -799,7 +801,7 @@ cmd_accept()
 	 */
 	if (curr_mlist == NULL)
 		return;
-	cmd_addhist(curr_mlist, cmdbuf);
+	cmd_addhist(curr_mlist, cmdbuf, 1);
 	curr_mlist->modified = 1;
 #endif
 }
@@ -965,7 +967,7 @@ delimit_word()
 	int delim_quoted = 0;
 	int meta_quoted = 0;
 	char *esc = get_meta_escape();
-	int esclen = strlen(esc);
+	int esclen = (int) strlen(esc);
 #endif
 	
 	/*
@@ -1262,7 +1264,7 @@ cmd_char(c)
 			cmd_mbc_buf[cmd_mbc_buf_index++] = c;
 			if (cmd_mbc_buf_index < cmd_mbc_buf_len)
 				return (CC_OK);
-			if (!is_utf8_well_formed(cmd_mbc_buf))
+			if (!is_utf8_well_formed(cmd_mbc_buf, cmd_mbc_buf_index))
 			{
 				/* complete, but not well formed (non-shortest form), sequence */
 				cmd_mbc_buf_len = 0;
@@ -1359,6 +1361,18 @@ cmd_lastpattern()
 
 #if CMD_HISTORY
 /*
+ */
+	static int
+mlist_size(ml)
+	struct mlist *ml;
+{
+	int size = 0;
+	for (ml = ml->next;  ml->string != NULL;  ml = ml->next)
+		++size;
+	return size;
+}
+
+/*
  * Get the name of the history file.
  */
 	static char *
@@ -1378,6 +1392,10 @@ histfile_name()
 		return (save(name));
 	}
 
+	/* See if history file is disabled in the build. */
+	if (strcmp(LESSHISTFILE, "") == 0 || strcmp(LESSHISTFILE, "-") == 0)
+		return (NULL);
+
 	/* Otherwise, file is in $HOME. */
 	home = lgetenv("HOME");
 	if (home == NULL || *home == '\0')
@@ -1388,25 +1406,28 @@ histfile_name()
 #endif
 			return (NULL);
 	}
-	len = strlen(home) + strlen(LESSHISTFILE) + 2;
+	len = (int) (strlen(home) + strlen(LESSHISTFILE) + 2);
 	name = (char *) ecalloc(len, sizeof(char));
 	SNPRINTF2(name, len, "%s/%s", home, LESSHISTFILE);
 	return (name);
 }
-#endif /* CMD_HISTORY */
 
 /*
- * Initialize history from a .lesshist file.
+ * Read a .lesshst file and call a callback for each line in the file.
  */
-	public void
-init_cmdhist()
+	static void
+read_cmdhist2(action, uparam, skip_search, skip_shell)
+	void (*action)(void*,struct mlist*,char*);
+	void *uparam;
+	int skip_search;
+	int skip_shell;
 {
-#if CMD_HISTORY
 	struct mlist *ml = NULL;
 	char line[CMDBUF_SIZE];
 	char *filename;
 	FILE *f;
 	char *p;
+	int *skip = NULL;
 
 	filename = histfile_name();
 	if (filename == NULL)
@@ -1432,84 +1453,170 @@ init_cmdhist()
 			}
 		}
 		if (strcmp(line, HISTFILE_SEARCH_SECTION) == 0)
+		{
 			ml = &mlist_search;
-		else if (strcmp(line, HISTFILE_SHELL_SECTION) == 0)
+			skip = &skip_search;
+		} else if (strcmp(line, HISTFILE_SHELL_SECTION) == 0)
 		{
 #if SHELL_ESCAPE || PIPEC
 			ml = &mlist_shell;
+			skip = &skip_shell;
 #else
 			ml = NULL;
+			skip = NULL;
 #endif
 		} else if (*line == '"')
 		{
 			if (ml != NULL)
-				cmd_addhist(ml, line+1);
+			{
+				if (skip != NULL && *skip > 0)
+					--(*skip);
+				else
+					(*action)(uparam, ml, line+1);
+			}
 		}
 	}
 	fclose(f);
+}
+
+	static void
+read_cmdhist(action, uparam, skip_search, skip_shell)
+	void (*action)(void*,struct mlist*,char*);
+	void *uparam;
+	int skip_search;
+	int skip_shell;
+{
+	read_cmdhist2(action, uparam, skip_search, skip_shell);
+	(*action)(uparam, NULL, NULL); /* signal end of file */
+}
+
+	static void
+addhist_init(void *uparam, struct mlist *ml, char *string)
+{
+	if (ml == NULL || string == NULL)
+		return;
+	cmd_addhist(ml, string, 0);
+}
+#endif /* CMD_HISTORY */
+
+/*
+ * Initialize history from a .lesshist file.
+ */
+	public void
+init_cmdhist()
+{
+#if CMD_HISTORY
+	read_cmdhist(&addhist_init, NULL, 0, 0);
 #endif /* CMD_HISTORY */
 }
 
 /*
- *
+ * Write the header for a section of the history file.
  */
 #if CMD_HISTORY
 	static void
-save_mlist(ml, f)
+write_mlist_header(ml, f)
 	struct mlist *ml;
 	FILE *f;
 {
-	int histsize = 0;
-	int n;
-	char *s;
-
-	s = lgetenv("LESSHISTSIZE");
-	if (s != NULL)
-		histsize = atoi(s);
-	if (histsize == 0)
-		histsize = 100;
+	if (ml == &mlist_search)
+		fprintf(f, "%s\n", HISTFILE_SEARCH_SECTION);
+#if SHELL_ESCAPE || PIPEC
+	else if (ml == &mlist_shell)
+		fprintf(f, "%s\n", HISTFILE_SHELL_SECTION);
+#endif
+}
 
-	ml = ml->prev;
-	for (n = 0;  n < histsize;  n++)
-	{
-		if (ml->string == NULL)
-			break;
-		ml = ml->prev;
-	}
+/*
+ * Write all modified entries in an mlist to the history file.
+ */
+	static void
+write_mlist(ml, f)
+	struct mlist *ml;
+	FILE *f;
+{
 	for (ml = ml->next;  ml->string != NULL;  ml = ml->next)
+	{
+		if (!ml->modified)
+			continue;
 		fprintf(f, "\"%s\n", ml->string);
+		ml->modified = 0;
+	}
+	ml->modified = 0; /* entire mlist is now unmodified */
 }
-#endif /* CMD_HISTORY */
 
 /*
- *
+ * Make a temp name in the same directory as filename.
  */
-	public void
-save_cmdhist()
-{
-#if CMD_HISTORY
+	static char *
+make_tempname(filename)
 	char *filename;
-	FILE *f;
-	int modified = 0;
+{
+	char lastch;
+	char *tempname = ecalloc(1, strlen(filename)+1);
+	strcpy(tempname, filename);
+	lastch = tempname[strlen(tempname)-1];
+	tempname[strlen(tempname)-1] = (lastch == 'Q') ? 'Z' : 'Q';
+	return tempname;
+}
 
-	if (mlist_search.modified)
-		modified = 1;
+struct save_ctx
+{
+	struct mlist *mlist;
+	FILE *fout;
+};
+
+/*
+ * Copy entries from the saved history file to a new file.
+ * At the end of each mlist, append any new entries
+ * created during this session.
+ */
+	static void
+copy_hist(void *uparam, struct mlist *ml, char *string)
+{
+	struct save_ctx *ctx = (struct save_ctx *) uparam;
+
+	if (ml != ctx->mlist) {
+		/* We're changing mlists. */
+		if (ctx->mlist)
+			/* Append any new entries to the end of the current mlist. */
+			write_mlist(ctx->mlist, ctx->fout);
+		/* Write the header for the new mlist. */
+		ctx->mlist = ml;
+		write_mlist_header(ctx->mlist, ctx->fout);
+	}
+	if (string != NULL)
+	{
+		/* Copy the entry. */
+		fprintf(ctx->fout, "\"%s\n", string);
+	}
+	if (ml == NULL) /* End of file */
+	{
+		/* Write any sections that were not in the original file. */
+		if (mlist_search.modified)
+		{
+			write_mlist_header(&mlist_search, ctx->fout);
+			write_mlist(&mlist_search, ctx->fout);
+		}
 #if SHELL_ESCAPE || PIPEC
-	if (mlist_shell.modified)
-		modified = 1;
+		if (mlist_shell.modified)
+		{
+			write_mlist_header(&mlist_shell, ctx->fout);
+			write_mlist(&mlist_shell, ctx->fout);
+		}
 #endif
-	if (!modified)
-		return;
-	filename = histfile_name();
-	if (filename == NULL)
-		return;
-	f = fopen(filename, "w");
-	free(filename);
-	if (f == NULL)
-		return;
-#if HAVE_FCHMOD
+	}
+}
+#endif /* CMD_HISTORY */
+
+/*
+ * Make a file readable only by its owner.
+ */
+	static void
+make_file_private(f)
+	FILE *f;
 {
-	/* Make history file readable only by owner. */
+#if HAVE_FCHMOD
 	int do_chmod = 1;
 #if HAVE_STAT
 	struct stat statbuf;
@@ -1520,19 +1627,74 @@ save_cmdhist()
 #endif
 	if (do_chmod)
 		fchmod(fileno(f), 0600);
-}
 #endif
+}
 
-	fprintf(f, "%s\n", HISTFILE_FIRST_LINE);
+/*
+ * Does the history file need to be updated?
+ */
+	static int
+histfile_modified()
+{
+	if (mlist_search.modified)
+		return 1;
+#if SHELL_ESCAPE || PIPEC
+	if (mlist_shell.modified)
+		return 1;
+#endif
+	return 0;
+}
 
-	fprintf(f, "%s\n", HISTFILE_SEARCH_SECTION);
-	save_mlist(&mlist_search, f);
+/*
+ * Update the .lesshst file.
+ */
+	public void
+save_cmdhist()
+{
+#if CMD_HISTORY
+	char *histname;
+	char *tempname;
+	int skip_search;
+	int skip_shell;
+	struct save_ctx ctx;
+	char *s;
+	FILE *fout = NULL;
+	int histsize = 0;
 
+	if (!histfile_modified())
+		return;
+	histname = histfile_name();
+	if (histname == NULL)
+		return;
+	tempname = make_tempname(histname);
+	fout = fopen(tempname, "w");
+	if (fout != NULL)
+	{
+		make_file_private(fout);
+		s = lgetenv("LESSHISTSIZE");
+		if (s != NULL)
+			histsize = atoi(s);
+		if (histsize <= 0)
+			histsize = 100;
+		skip_search = mlist_size(&mlist_search) - histsize;
 #if SHELL_ESCAPE || PIPEC
-	fprintf(f, "%s\n", HISTFILE_SHELL_SECTION);
-	save_mlist(&mlist_shell, f);
+		skip_shell = mlist_size(&mlist_shell) - histsize;
 #endif
-
-	fclose(f);
+		fprintf(fout, "%s\n", HISTFILE_FIRST_LINE);
+		ctx.fout = fout;
+		ctx.mlist = NULL;
+		read_cmdhist(copy_hist, &ctx, skip_search, skip_shell);
+		fclose(fout);
+#if MSDOS_COMPILER==WIN32C
+		/*
+		 * Windows rename doesn't remove an existing file,
+		 * making it useless for atomic operations. Sigh.
+		 */
+		remove(histname);
+#endif
+		rename(tempname, histname);
+	}
+	free(tempname);
+	free(histname);
 #endif /* CMD_HISTORY */
 }
diff --git a/contrib/less/command.c b/contrib/less/command.c
index 5cbab00..ddcddd4 100644
--- a/contrib/less/command.c
+++ b/contrib/less/command.c
@@ -1,6 +1,6 @@
 /* $FreeBSD$ */
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
@@ -35,6 +35,7 @@ extern int top_scroll;
 extern int ignore_eoi;
 extern int secure;
 extern int hshift;
+extern int bs_mode;
 extern int show_attn;
 extern int less_is_more;
 extern POSITION highest_hilite;
@@ -56,6 +57,7 @@ extern int screen_trashed;	/* The screen has been overwritten */
 extern int shift_count;
 extern int oldbot;
 extern int forw_prompt;
+extern int same_pos_bell;
 
 #if SHELL_ESCAPE
 static char *shellcmd = NULL;	/* For holding last shell command for "!!" */
@@ -70,6 +72,7 @@ static int optflag;
 static int optgetname;
 static POSITION bottompos;
 static int save_hshift;
+static int save_bs_mode;
 #if PIPEC
 static char pipec;
 #endif
@@ -77,9 +80,9 @@ static char pipec;
 struct ungot {
 	struct ungot *ug_next;
 	char ug_char;
+	char ug_end_command;
 };
 static struct ungot* ungot = NULL;
-static int unget_end = 0;
 
 static void multi_search();
 
@@ -160,6 +163,7 @@ mca_search()
 		cmd_putstr("/");
 	else
 		cmd_putstr("?");
+	forw_prompt = 0;
 	set_mlist(ml_search, 0);
 }
 
@@ -194,6 +198,7 @@ mca_opt_toggle()
 		cmd_putstr("!");
 		break;
 	}
+	forw_prompt = 0;
 	set_mlist(NULL, 0);
 }
 
@@ -212,7 +217,7 @@ exec_mca()
 	{
 	case A_F_SEARCH:
 	case A_B_SEARCH:
-		multi_search(cbuf, (int) number);
+		multi_search(cbuf, (int) number, 0);
 		break;
 #if HILITE_SEARCH
 	case A_FILTER:
@@ -688,7 +693,7 @@ prompt()
 {
 	register constant char *p;
 
-	if (ungot != NULL)
+	if (ungot != NULL && !ungot->ug_end_command)
 	{
 		/*
 		 * No prompt necessary if commands are from 
@@ -778,40 +783,6 @@ dispversion()
 	public int
 getcc()
 {
-	if (unget_end) 
-	{
-		/*
-		 * We have just run out of ungotten chars.
-		 */
-		unget_end = 0;
-		if (len_cmdbuf() == 0 || !empty_screen())
-			return (getchr());
-		/*
-		 * Command is incomplete, so try to complete it.
-		 */
-		switch (mca)
-		{
-		case A_DIGIT:
-			/*
-			 * We have a number but no command.  Treat as #g.
-			 */
-			return ('g');
-
-		case A_F_SEARCH:
-		case A_B_SEARCH:
-			/*
-			 * We have "/string" but no newline.  Add the \n.
-			 */
-			return ('\n'); 
-
-		default:
-			/*
-			 * Some other incomplete command.  Let user complete it.
-			 */
-			return (getchr());
-		}
-	}
-
 	if (ungot == NULL)
 	{
 		/*
@@ -826,9 +797,36 @@ getcc()
 	{
 		struct ungot *ug = ungot;
 		char c = ug->ug_char;
+		int end_command = ug->ug_end_command;
 		ungot = ug->ug_next;
 		free(ug);
-		unget_end = (ungot == NULL);
+		if (end_command)
+		{
+			/*
+			 * Command is incomplete, so try to complete it.
+			 */
+			switch (mca)
+			{
+			case A_DIGIT:
+				/*
+				 * We have a number but no command.  Treat as #g.
+				 */
+				return ('g');
+
+			case A_F_SEARCH:
+			case A_B_SEARCH:
+				/*
+				 * We have "/string" but no newline.  Add the \n.
+				 */
+				return ('\n'); 
+
+			default:
+				/*
+				 * Some other incomplete command.  Let user complete it.
+				 */
+				return (getchr());
+			}
+		}
 		return (c);
 	}
 }
@@ -843,10 +841,10 @@ ungetcc(c)
 {
 	struct ungot *ug = (struct ungot *) ecalloc(1, sizeof(struct ungot));
 
-	ug->ug_char = c;
+	ug->ug_char = (char) c;
+	ug->ug_end_command = (c == CHAR_END_COMMAND);
 	ug->ug_next = ungot;
 	ungot = ug;
-	unget_end = 0;
 }
 
 /*
@@ -869,9 +867,10 @@ ungetsc(s)
  * If SRCH_PAST_EOF is set, continue the search thru multiple files.
  */
 	static void
-multi_search(pattern, n)
+multi_search(pattern, n, silent)
 	char *pattern;
 	int n;
+	int silent;
 {
 	register int nomore;
 	IFILE save_ifile;
@@ -946,7 +945,7 @@ multi_search(pattern, n)
 	 * Didn't find it.
 	 * Print an error message if we haven't already.
 	 */
-	if (n > 0)
+	if (n > 0 && !silent)
 		error("Pattern not found", NULL_PARG);
 
 	if (changed_file)
@@ -974,7 +973,7 @@ forw_loop(until_hilite)
 		return (A_NOACTION);
 
 	cmd_exec();
-	jump_forw();
+	jump_forw_buffered();
 	curr_len = ch_length();
 	highest_hilite = until_hilite ? curr_len : NULL_POSITION;
 	ignore_eoi = 1;
@@ -1019,7 +1018,6 @@ commands()
 	IFILE old_ifile;
 	IFILE new_ifile;
 	char *tagfile;
-	int until_hilite = 0;
 
 	search_type = SRCH_FORW;
 	wscroll = (sc_height + 1) / 2;
@@ -1247,6 +1245,8 @@ commands()
 			/*
 			 * Forward forever, ignoring EOF.
 			 */
+			if (show_attn)
+				set_attnpos(bottompos);
 			newaction = forw_loop(0);
 			break;
 
@@ -1332,6 +1332,17 @@ commands()
 				jump_back(number);
 			break;
 
+		case A_GOEND_BUF:
+			/*
+			 * Go to line N, default last buffered byte.
+			 */
+			cmd_exec();
+			if (number <= 0)
+				jump_forw_buffered();
+			else
+				jump_back(number);
+			break;
+
 		case A_GOPOS:
 			/*
 			 * Go to a specified byte position in the file.
@@ -1374,6 +1385,7 @@ commands()
 				 * previous file.
 				 */
 				hshift = save_hshift;
+				bs_mode = save_bs_mode;
 				if (edit_prev(1) == 0)
 					break;
 			}
@@ -1389,7 +1401,7 @@ commands()
 			if (number <= 0) number = 1;	\
 			mca_search();			\
 			cmd_exec();			\
-			multi_search((char *)NULL, (int) number);
+			multi_search((char *)NULL, (int) number, 0);
 
 
 		case A_F_SEARCH:
@@ -1477,6 +1489,8 @@ commands()
 			cmd_exec();
 			save_hshift = hshift;
 			hshift = 0;
+			save_bs_mode = bs_mode;
+			bs_mode = BS_SPECIAL;
 			(void) edit(FAKE_HELPFILE);
 			break;
 
diff --git a/contrib/less/compose.uni b/contrib/less/compose.uni
new file mode 100644
index 0000000..b814ce9
--- /dev/null
+++ b/contrib/less/compose.uni
@@ -0,0 +1,261 @@
+/* Generated by "./mkutable -f2 Mn Me -- unicode/UnicodeData.txt" on Mon Jul 14 16:21:21 PDT 2014 */
+	{ 0x0300, 0x036f }, /* Mn */
+	{ 0x0483, 0x0487 }, /* Mn */
+	{ 0x0488, 0x0489 }, /* Me */
+	{ 0x0591, 0x05bd }, /* Mn */
+	{ 0x05bf, 0x05bf }, /* Mn */
+	{ 0x05c1, 0x05c2 }, /* Mn */
+	{ 0x05c4, 0x05c5 }, /* Mn */
+	{ 0x05c7, 0x05c7 }, /* Mn */
+	{ 0x0610, 0x061a }, /* Mn */
+	{ 0x064b, 0x065f }, /* Mn */
+	{ 0x0670, 0x0670 }, /* Mn */
+	{ 0x06d6, 0x06dc }, /* Mn */
+	{ 0x06df, 0x06e4 }, /* Mn */
+	{ 0x06e7, 0x06e8 }, /* Mn */
+	{ 0x06ea, 0x06ed }, /* Mn */
+	{ 0x0711, 0x0711 }, /* Mn */
+	{ 0x0730, 0x074a }, /* Mn */
+	{ 0x07a6, 0x07b0 }, /* Mn */
+	{ 0x07eb, 0x07f3 }, /* Mn */
+	{ 0x0816, 0x0819 }, /* Mn */
+	{ 0x081b, 0x0823 }, /* Mn */
+	{ 0x0825, 0x0827 }, /* Mn */
+	{ 0x0829, 0x082d }, /* Mn */
+	{ 0x0859, 0x085b }, /* Mn */
+	{ 0x08e4, 0x0902 }, /* Mn */
+	{ 0x093a, 0x093a }, /* Mn */
+	{ 0x093c, 0x093c }, /* Mn */
+	{ 0x0941, 0x0948 }, /* Mn */
+	{ 0x094d, 0x094d }, /* Mn */
+	{ 0x0951, 0x0957 }, /* Mn */
+	{ 0x0962, 0x0963 }, /* Mn */
+	{ 0x0981, 0x0981 }, /* Mn */
+	{ 0x09bc, 0x09bc }, /* Mn */
+	{ 0x09c1, 0x09c4 }, /* Mn */
+	{ 0x09cd, 0x09cd }, /* Mn */
+	{ 0x09e2, 0x09e3 }, /* Mn */
+	{ 0x0a01, 0x0a02 }, /* Mn */
+	{ 0x0a3c, 0x0a3c }, /* Mn */
+	{ 0x0a41, 0x0a42 }, /* Mn */
+	{ 0x0a47, 0x0a48 }, /* Mn */
+	{ 0x0a4b, 0x0a4d }, /* Mn */
+	{ 0x0a51, 0x0a51 }, /* Mn */
+	{ 0x0a70, 0x0a71 }, /* Mn */
+	{ 0x0a75, 0x0a75 }, /* Mn */
+	{ 0x0a81, 0x0a82 }, /* Mn */
+	{ 0x0abc, 0x0abc }, /* Mn */
+	{ 0x0ac1, 0x0ac5 }, /* Mn */
+	{ 0x0ac7, 0x0ac8 }, /* Mn */
+	{ 0x0acd, 0x0acd }, /* Mn */
+	{ 0x0ae2, 0x0ae3 }, /* Mn */
+	{ 0x0b01, 0x0b01 }, /* Mn */
+	{ 0x0b3c, 0x0b3c }, /* Mn */
+	{ 0x0b3f, 0x0b3f }, /* Mn */
+	{ 0x0b41, 0x0b44 }, /* Mn */
+	{ 0x0b4d, 0x0b4d }, /* Mn */
+	{ 0x0b56, 0x0b56 }, /* Mn */
+	{ 0x0b62, 0x0b63 }, /* Mn */
+	{ 0x0b82, 0x0b82 }, /* Mn */
+	{ 0x0bc0, 0x0bc0 }, /* Mn */
+	{ 0x0bcd, 0x0bcd }, /* Mn */
+	{ 0x0c00, 0x0c00 }, /* Mn */
+	{ 0x0c3e, 0x0c40 }, /* Mn */
+	{ 0x0c46, 0x0c48 }, /* Mn */
+	{ 0x0c4a, 0x0c4d }, /* Mn */
+	{ 0x0c55, 0x0c56 }, /* Mn */
+	{ 0x0c62, 0x0c63 }, /* Mn */
+	{ 0x0c81, 0x0c81 }, /* Mn */
+	{ 0x0cbc, 0x0cbc }, /* Mn */
+	{ 0x0cbf, 0x0cbf }, /* Mn */
+	{ 0x0cc6, 0x0cc6 }, /* Mn */
+	{ 0x0ccc, 0x0ccd }, /* Mn */
+	{ 0x0ce2, 0x0ce3 }, /* Mn */
+	{ 0x0d01, 0x0d01 }, /* Mn */
+	{ 0x0d41, 0x0d44 }, /* Mn */
+	{ 0x0d4d, 0x0d4d }, /* Mn */
+	{ 0x0d62, 0x0d63 }, /* Mn */
+	{ 0x0dca, 0x0dca }, /* Mn */
+	{ 0x0dd2, 0x0dd4 }, /* Mn */
+	{ 0x0dd6, 0x0dd6 }, /* Mn */
+	{ 0x0e31, 0x0e31 }, /* Mn */
+	{ 0x0e34, 0x0e3a }, /* Mn */
+	{ 0x0e47, 0x0e4e }, /* Mn */
+	{ 0x0eb1, 0x0eb1 }, /* Mn */
+	{ 0x0eb4, 0x0eb9 }, /* Mn */
+	{ 0x0ebb, 0x0ebc }, /* Mn */
+	{ 0x0ec8, 0x0ecd }, /* Mn */
+	{ 0x0f18, 0x0f19 }, /* Mn */
+	{ 0x0f35, 0x0f35 }, /* Mn */
+	{ 0x0f37, 0x0f37 }, /* Mn */
+	{ 0x0f39, 0x0f39 }, /* Mn */
+	{ 0x0f71, 0x0f7e }, /* Mn */
+	{ 0x0f80, 0x0f84 }, /* Mn */
+	{ 0x0f86, 0x0f87 }, /* Mn */
+	{ 0x0f8d, 0x0f97 }, /* Mn */
+	{ 0x0f99, 0x0fbc }, /* Mn */
+	{ 0x0fc6, 0x0fc6 }, /* Mn */
+	{ 0x102d, 0x1030 }, /* Mn */
+	{ 0x1032, 0x1037 }, /* Mn */
+	{ 0x1039, 0x103a }, /* Mn */
+	{ 0x103d, 0x103e }, /* Mn */
+	{ 0x1058, 0x1059 }, /* Mn */
+	{ 0x105e, 0x1060 }, /* Mn */
+	{ 0x1071, 0x1074 }, /* Mn */
+	{ 0x1082, 0x1082 }, /* Mn */
+	{ 0x1085, 0x1086 }, /* Mn */
+	{ 0x108d, 0x108d }, /* Mn */
+	{ 0x109d, 0x109d }, /* Mn */
+	{ 0x135d, 0x135f }, /* Mn */
+	{ 0x1712, 0x1714 }, /* Mn */
+	{ 0x1732, 0x1734 }, /* Mn */
+	{ 0x1752, 0x1753 }, /* Mn */
+	{ 0x1772, 0x1773 }, /* Mn */
+	{ 0x17b4, 0x17b5 }, /* Mn */
+	{ 0x17b7, 0x17bd }, /* Mn */
+	{ 0x17c6, 0x17c6 }, /* Mn */
+	{ 0x17c9, 0x17d3 }, /* Mn */
+	{ 0x17dd, 0x17dd }, /* Mn */
+	{ 0x180b, 0x180d }, /* Mn */
+	{ 0x18a9, 0x18a9 }, /* Mn */
+	{ 0x1920, 0x1922 }, /* Mn */
+	{ 0x1927, 0x1928 }, /* Mn */
+	{ 0x1932, 0x1932 }, /* Mn */
+	{ 0x1939, 0x193b }, /* Mn */
+	{ 0x1a17, 0x1a18 }, /* Mn */
+	{ 0x1a1b, 0x1a1b }, /* Mn */
+	{ 0x1a56, 0x1a56 }, /* Mn */
+	{ 0x1a58, 0x1a5e }, /* Mn */
+	{ 0x1a60, 0x1a60 }, /* Mn */
+	{ 0x1a62, 0x1a62 }, /* Mn */
+	{ 0x1a65, 0x1a6c }, /* Mn */
+	{ 0x1a73, 0x1a7c }, /* Mn */
+	{ 0x1a7f, 0x1a7f }, /* Mn */
+	{ 0x1ab0, 0x1abd }, /* Mn */
+	{ 0x1abe, 0x1abe }, /* Me */
+	{ 0x1b00, 0x1b03 }, /* Mn */
+	{ 0x1b34, 0x1b34 }, /* Mn */
+	{ 0x1b36, 0x1b3a }, /* Mn */
+	{ 0x1b3c, 0x1b3c }, /* Mn */
+	{ 0x1b42, 0x1b42 }, /* Mn */
+	{ 0x1b6b, 0x1b73 }, /* Mn */
+	{ 0x1b80, 0x1b81 }, /* Mn */
+	{ 0x1ba2, 0x1ba5 }, /* Mn */
+	{ 0x1ba8, 0x1ba9 }, /* Mn */
+	{ 0x1bab, 0x1bad }, /* Mn */
+	{ 0x1be6, 0x1be6 }, /* Mn */
+	{ 0x1be8, 0x1be9 }, /* Mn */
+	{ 0x1bed, 0x1bed }, /* Mn */
+	{ 0x1bef, 0x1bf1 }, /* Mn */
+	{ 0x1c2c, 0x1c33 }, /* Mn */
+	{ 0x1c36, 0x1c37 }, /* Mn */
+	{ 0x1cd0, 0x1cd2 }, /* Mn */
+	{ 0x1cd4, 0x1ce0 }, /* Mn */
+	{ 0x1ce2, 0x1ce8 }, /* Mn */
+	{ 0x1ced, 0x1ced }, /* Mn */
+	{ 0x1cf4, 0x1cf4 }, /* Mn */
+	{ 0x1cf8, 0x1cf9 }, /* Mn */
+	{ 0x1dc0, 0x1df5 }, /* Mn */
+	{ 0x1dfc, 0x1dff }, /* Mn */
+	{ 0x20d0, 0x20dc }, /* Mn */
+	{ 0x20dd, 0x20e0 }, /* Me */
+	{ 0x20e1, 0x20e1 }, /* Mn */
+	{ 0x20e2, 0x20e4 }, /* Me */
+	{ 0x20e5, 0x20f0 }, /* Mn */
+	{ 0x2cef, 0x2cf1 }, /* Mn */
+	{ 0x2d7f, 0x2d7f }, /* Mn */
+	{ 0x2de0, 0x2dff }, /* Mn */
+	{ 0x302a, 0x302d }, /* Mn */
+	{ 0x3099, 0x309a }, /* Mn */
+	{ 0xa66f, 0xa66f }, /* Mn */
+	{ 0xa670, 0xa672 }, /* Me */
+	{ 0xa674, 0xa67d }, /* Mn */
+	{ 0xa69f, 0xa69f }, /* Mn */
+	{ 0xa6f0, 0xa6f1 }, /* Mn */
+	{ 0xa802, 0xa802 }, /* Mn */
+	{ 0xa806, 0xa806 }, /* Mn */
+	{ 0xa80b, 0xa80b }, /* Mn */
+	{ 0xa825, 0xa826 }, /* Mn */
+	{ 0xa8c4, 0xa8c4 }, /* Mn */
+	{ 0xa8e0, 0xa8f1 }, /* Mn */
+	{ 0xa926, 0xa92d }, /* Mn */
+	{ 0xa947, 0xa951 }, /* Mn */
+	{ 0xa980, 0xa982 }, /* Mn */
+	{ 0xa9b3, 0xa9b3 }, /* Mn */
+	{ 0xa9b6, 0xa9b9 }, /* Mn */
+	{ 0xa9bc, 0xa9bc }, /* Mn */
+	{ 0xa9e5, 0xa9e5 }, /* Mn */
+	{ 0xaa29, 0xaa2e }, /* Mn */
+	{ 0xaa31, 0xaa32 }, /* Mn */
+	{ 0xaa35, 0xaa36 }, /* Mn */
+	{ 0xaa43, 0xaa43 }, /* Mn */
+	{ 0xaa4c, 0xaa4c }, /* Mn */
+	{ 0xaa7c, 0xaa7c }, /* Mn */
+	{ 0xaab0, 0xaab0 }, /* Mn */
+	{ 0xaab2, 0xaab4 }, /* Mn */
+	{ 0xaab7, 0xaab8 }, /* Mn */
+	{ 0xaabe, 0xaabf }, /* Mn */
+	{ 0xaac1, 0xaac1 }, /* Mn */
+	{ 0xaaec, 0xaaed }, /* Mn */
+	{ 0xaaf6, 0xaaf6 }, /* Mn */
+	{ 0xabe5, 0xabe5 }, /* Mn */
+	{ 0xabe8, 0xabe8 }, /* Mn */
+	{ 0xabed, 0xabed }, /* Mn */
+	{ 0xfb1e, 0xfb1e }, /* Mn */
+	{ 0xfe00, 0xfe0f }, /* Mn */
+	{ 0xfe20, 0xfe2d }, /* Mn */
+	{ 0x101fd, 0x101fd }, /* Mn */
+	{ 0x102e0, 0x102e0 }, /* Mn */
+	{ 0x10376, 0x1037a }, /* Mn */
+	{ 0x10a01, 0x10a03 }, /* Mn */
+	{ 0x10a05, 0x10a06 }, /* Mn */
+	{ 0x10a0c, 0x10a0f }, /* Mn */
+	{ 0x10a38, 0x10a3a }, /* Mn */
+	{ 0x10a3f, 0x10a3f }, /* Mn */
+	{ 0x10ae5, 0x10ae6 }, /* Mn */
+	{ 0x11001, 0x11001 }, /* Mn */
+	{ 0x11038, 0x11046 }, /* Mn */
+	{ 0x1107f, 0x11081 }, /* Mn */
+	{ 0x110b3, 0x110b6 }, /* Mn */
+	{ 0x110b9, 0x110ba }, /* Mn */
+	{ 0x11100, 0x11102 }, /* Mn */
+	{ 0x11127, 0x1112b }, /* Mn */
+	{ 0x1112d, 0x11134 }, /* Mn */
+	{ 0x11173, 0x11173 }, /* Mn */
+	{ 0x11180, 0x11181 }, /* Mn */
+	{ 0x111b6, 0x111be }, /* Mn */
+	{ 0x1122f, 0x11231 }, /* Mn */
+	{ 0x11234, 0x11234 }, /* Mn */
+	{ 0x11236, 0x11237 }, /* Mn */
+	{ 0x112df, 0x112df }, /* Mn */
+	{ 0x112e3, 0x112ea }, /* Mn */
+	{ 0x11301, 0x11301 }, /* Mn */
+	{ 0x1133c, 0x1133c }, /* Mn */
+	{ 0x11340, 0x11340 }, /* Mn */
+	{ 0x11366, 0x1136c }, /* Mn */
+	{ 0x11370, 0x11374 }, /* Mn */
+	{ 0x114b3, 0x114b8 }, /* Mn */
+	{ 0x114ba, 0x114ba }, /* Mn */
+	{ 0x114bf, 0x114c0 }, /* Mn */
+	{ 0x114c2, 0x114c3 }, /* Mn */
+	{ 0x115b2, 0x115b5 }, /* Mn */
+	{ 0x115bc, 0x115bd }, /* Mn */
+	{ 0x115bf, 0x115c0 }, /* Mn */
+	{ 0x11633, 0x1163a }, /* Mn */
+	{ 0x1163d, 0x1163d }, /* Mn */
+	{ 0x1163f, 0x11640 }, /* Mn */
+	{ 0x116ab, 0x116ab }, /* Mn */
+	{ 0x116ad, 0x116ad }, /* Mn */
+	{ 0x116b0, 0x116b5 }, /* Mn */
+	{ 0x116b7, 0x116b7 }, /* Mn */
+	{ 0x16af0, 0x16af4 }, /* Mn */
+	{ 0x16b30, 0x16b36 }, /* Mn */
+	{ 0x16f8f, 0x16f92 }, /* Mn */
+	{ 0x1bc9d, 0x1bc9e }, /* Mn */
+	{ 0x1d167, 0x1d169 }, /* Mn */
+	{ 0x1d17b, 0x1d182 }, /* Mn */
+	{ 0x1d185, 0x1d18b }, /* Mn */
+	{ 0x1d1aa, 0x1d1ad }, /* Mn */
+	{ 0x1d242, 0x1d244 }, /* Mn */
+	{ 0x1e8d0, 0x1e8d6 }, /* Mn */
+	{ 0xe0100, 0xe01ef }, /* Mn */
diff --git a/contrib/less/cvt.c b/contrib/less/cvt.c
index c3b3e6e..d983641 100644
--- a/contrib/less/cvt.c
+++ b/contrib/less/cvt.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
@@ -75,8 +75,8 @@ cvt_text(odst, osrc, chpos, lenp, ops)
 
 	for (src = osrc, dst = odst;  src < src_end;  )
 	{
-		int src_pos = src - osrc;
-		int dst_pos = dst - odst;
+		int src_pos = (int) (src - osrc);
+		int dst_pos = (int) (dst - odst);
 		ch = step_char(&src, +1, src_end);
 		if ((ops & CVT_BS) && ch == '\b' && dst > odst)
 		{
@@ -109,6 +109,6 @@ cvt_text(odst, osrc, chpos, lenp, ops)
 		edst--;
 	*edst = '\0';
 	if (lenp != NULL)
-		*lenp = edst - odst;
+		*lenp = (int) (edst - odst);
 	/* FIXME: why was this here?  if (chpos != NULL) chpos[dst - odst] = src - osrc; */
 }
diff --git a/contrib/less/decode.c b/contrib/less/decode.c
index 6d0312d..1cd1599 100644
--- a/contrib/less/decode.c
+++ b/contrib/less/decode.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
@@ -105,6 +105,7 @@ static unsigned char cmdtable[] =
 	ESC,CONTROL('F'),0,		A_F_BRACKET,
 	ESC,CONTROL('B'),0,		A_B_BRACKET,
 	'G',0,				A_GOEND,
+	ESC,'G',0,			A_GOEND_BUF,
 	ESC,'>',0,			A_GOEND,
 	'>',0,				A_GOEND,
 	SK(SK_END),0,			A_GOEND,
diff --git a/contrib/less/edit.c b/contrib/less/edit.c
index 5f4e679..2a35ade 100644
--- a/contrib/less/edit.c
+++ b/contrib/less/edit.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
@@ -64,7 +64,7 @@ init_textlist(tlist, str)
 	int meta_quoted = 0;
 	int delim_quoted = 0;
 	char *esc = get_meta_escape();
-	int esclen = strlen(esc);
+	int esclen = (int) strlen(esc);
 #endif
 	
 	tlist->string = skipsp(str);
@@ -411,7 +411,10 @@ edit_ifile(ifile)
 		}
 #endif
 		if (every_first_cmd != NULL)
+		{
+			ungetcc(CHAR_END_COMMAND);
 			ungetsc(every_first_cmd);
+		}
 	}
 
 	free(qopen_filename);
@@ -433,7 +436,8 @@ edit_ifile(ifile)
 #if HILITE_SEARCH
 		clr_hilite();
 #endif
-		cmd_addhist(ml_examine, filename);
+		if (strcmp(filename, FAKE_HELPFILE) && strcmp(filename, FAKE_EMPTYFILE))
+			cmd_addhist(ml_examine, filename, 1);
 		if (no_display && errmsgs > 0)
 		{
 			/*
@@ -745,7 +749,8 @@ use_logfile(filename)
 	 */
 	filename = shell_unquote(filename);
 	exists = open(filename, OPEN_READ);
-	close(exists);
+	if (exists >= 0)
+		close(exists);
 	exists = (exists >= 0);
 
 	/*
diff --git a/contrib/less/filename.c b/contrib/less/filename.c
index 14e85e3..9631f1c 100644
--- a/contrib/less/filename.c
+++ b/contrib/less/filename.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
@@ -86,7 +86,7 @@ shell_unquote(str)
 	} else
 	{
 		char *esc = get_meta_escape();
-		int esclen = strlen(esc);
+		int esclen = (int) strlen(esc);
 		while (*str != '\0')
 		{
 			if (esclen > 0 && strncmp(str, esc, esclen) == 0)
@@ -150,7 +150,7 @@ shell_quote(s)
 	char *newstr;
 	int len;
 	char *esc = get_meta_escape();
-	int esclen = strlen(esc);
+	int esclen = (int) strlen(esc);
 	int use_quotes = 0;
 	int have_quotes = 0;
 
@@ -188,7 +188,7 @@ shell_quote(s)
 			 * We can't quote a string that contains quotes.
 			 */
 			return (NULL);
-		len = strlen(s) + 3;
+		len = (int) strlen(s) + 3;
 	}
 	/*
 	 * Allocate and construct the new string.
@@ -235,7 +235,7 @@ dirfile(dirname, filename)
 	/*
 	 * Construct the full pathname.
 	 */
-	len= strlen(dirname) + strlen(filename) + 2;
+	len = (int) (strlen(dirname) + strlen(filename) + 2);
 	pathname = (char *) calloc(len, sizeof(char));
 	if (pathname == NULL)
 		return (NULL);
@@ -350,7 +350,7 @@ fexpand(s)
 				if (ifile == NULL_IFILE)
 					n++;
 				else
-					n += strlen(get_filename(ifile));
+					n += (int) strlen(get_filename(ifile));
 			}
 			/*
 			 * Else it is the first char in a string of
@@ -432,7 +432,7 @@ fcomplete(s)
 		for (slash = s+strlen(s)-1;  slash > s;  slash--)
 			if (*slash == *PATHNAME_SEP || *slash == '/')
 				break;
-		len = strlen(s) + 4;
+		len = (int) strlen(s) + 4;
 		fpat = (char *) ecalloc(len, sizeof(char));
 		if (strchr(slash, '.') == NULL)
 			SNPRINTF1(fpat, len, "%s*.*", s);
@@ -441,7 +441,7 @@ fcomplete(s)
 	}
 #else
 	{
-	int len = strlen(s) + 2;
+	int len = (int) strlen(s) + 2;
 	fpat = (char *) ecalloc(len, sizeof(char));
 	SNPRINTF1(fpat, len, "%s*", s);
 	}
@@ -481,17 +481,25 @@ bin_file(f)
 	if (lseek(f, (off_t)0, SEEK_SET) == BAD_LSEEK)
 		return (0);
 	n = read(f, data, sizeof(data));
-	pend = &data[n];
-	for (p = data;  p < pend;  )
+	if (n <= 0)
+		return (0);
+	if (utf_mode)
+	{
+		bin_count = utf_bin_count(data, n);
+	} else
 	{
-		LWCHAR c = step_char(&p, +1, pend);
-		if (ctldisp == OPT_ONPLUS && IS_CSI_START(c))
+		pend = &data[n];
+		for (p = data;  p < pend;  )
 		{
-			do {
-				c = step_char(&p, +1, pend);
-			} while (p < pend && is_ansi_middle(c));
-		} else if (binary_char(c))
-			bin_count++;
+			LWCHAR c = step_char(&p, +1, pend);
+			if (ctldisp == OPT_ONPLUS && IS_CSI_START(c))
+			{
+				do {
+					c = step_char(&p, +1, pend);
+				} while (p < pend && is_ansi_middle(c));
+			} else if (binary_char(c))
+				bin_count++;
+		}
 	}
 	/*
 	 * Call it a binary file if there are more than 5 binary characters
@@ -593,7 +601,7 @@ shellcmd(cmd)
 			fd = popen(cmd, "r");
 		} else
 		{
-			int len = strlen(shell) + strlen(esccmd) + 5;
+			int len = (int) (strlen(shell) + strlen(esccmd) + 5);
 			scmd = (char *) ecalloc(len, sizeof(char));
 			SNPRINTF3(scmd, len, "%s %s %s", shell, shell_coption(), esccmd);
 			free(esccmd);
@@ -701,14 +709,14 @@ lglob(filename)
 	gfilename = (char *) ecalloc(len, sizeof(char));
 	p = gfilename;
 	do {
-		n = strlen(drive) + strlen(dir) + strlen(fnd.GLOB_NAME) + 1;
+		n = (int) (strlen(drive) + strlen(dir) + strlen(fnd.GLOB_NAME) + 1);
 		pathname = (char *) ecalloc(n, sizeof(char));
 		SNPRINTF3(pathname, n, "%s%s%s", drive, dir, fnd.GLOB_NAME);
 		qpathname = shell_quote(pathname);
 		free(pathname);
 		if (qpathname != NULL)
 		{
-			n = strlen(qpathname);
+			n = (int) strlen(qpathname);
 			while (p - gfilename + n + 2 >= len)
 			{
 				/*
@@ -765,7 +773,7 @@ lglob(filename)
 	/*
 	 * Invoke lessecho, and read its output (a globbed list of filenames).
 	 */
-	len = strlen(lessecho) + strlen(ofilename) + (7*strlen(metachars())) + 24;
+	len = (int) (strlen(lessecho) + strlen(ofilename) + (7*strlen(metachars())) + 24);
 	cmd = (char *) ecalloc(len, sizeof(char));
 	SNPRINTF4(cmd, len, "%s -p0x%x -d0x%x -e%s ", lessecho, openquote, closequote, esc);
 	free(esc);
@@ -813,15 +821,20 @@ lglob(filename)
 num_pct_s(lessopen)
 	char *lessopen;
 {
-	int num;
+	int num = 0;
 
-	for (num = 0;; num++)
+	while (*lessopen != '\0')
 	{
-		lessopen = strchr(lessopen, '%');
-		if (lessopen == NULL)
-			break;
-		if (*++lessopen != 's')
-			return (999);
+		if (*lessopen == '%')
+		{
+			if (lessopen[1] == '%')
+				++lessopen;
+			else if (lessopen[1] == 's')
+				++num;
+			else
+				return (999);
+		}
+		++lessopen;
 	}
 	return (num);
 }
@@ -881,7 +894,7 @@ open_altfile(filename, pf, pfd)
 		return (NULL);
 	}
 
-	len = strlen(lessopen) + strlen(filename) + 2;
+	len = (int) (strlen(lessopen) + strlen(filename) + 2);
 	cmd = (char *) ecalloc(len, sizeof(char));
 	SNPRINTF1(cmd, len, lessopen, filename);
 	fd = shellcmd(cmd);
@@ -971,10 +984,10 @@ close_altfile(altfilename, filename, pipefd)
 	     	return;
 	if (num_pct_s(lessclose) > 2) 
 	{
-		error("Invalid LESSCLOSE variable");
+		error("Invalid LESSCLOSE variable", NULL_PARG);
 		return;
 	}
-	len = strlen(lessclose) + strlen(filename) + strlen(altfilename) + 2;
+	len = (int) (strlen(lessclose) + strlen(filename) + strlen(altfilename) + 2);
 	cmd = (char *) ecalloc(len, sizeof(char));
 	SNPRINTF2(cmd, len, lessclose, filename, altfilename);
 	fd = shellcmd(cmd);
diff --git a/contrib/less/forwback.c b/contrib/less/forwback.c
index 0166266..9626dc1 100644
--- a/contrib/less/forwback.c
+++ b/contrib/less/forwback.c
@@ -1,6 +1,6 @@
 /* $FreeBSD$ */
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
@@ -21,6 +21,7 @@ public int screen_trashed;
 public int squished;
 public int no_back_scroll = 0;
 public int forw_prompt;
+public int same_pos_bell = 1;
 
 extern int sigs;
 extern int top_scroll;
@@ -34,6 +35,11 @@ extern int ignore_eoi;
 extern int clear_bg;
 extern int final_attr;
 extern int oldbot;
+#if HILITE_SEARCH
+extern int size_linebuf;
+extern int hilite_search;
+extern int status_col;
+#endif
 #if TAGS
 extern char *tagoption;
 #endif
@@ -126,7 +132,6 @@ forw(n, pos, force, only_last, nblank)
 	int only_last;
 	int nblank;
 {
-	int eof = 0;
 	int nlines = 0;
 	int do_repaint;
 	static int first_time = 1;
@@ -145,6 +150,13 @@ forw(n, pos, force, only_last, nblank)
 	do_repaint = (only_last && n > sc_height-1) || 
 		(forw_scroll >= 0 && n > forw_scroll && n != sc_height-1);
 
+#if HILITE_SEARCH
+	if (hilite_search == OPT_ONPLUS || is_filtering() || status_col) {
+		prep_hilite(pos, pos + 4*size_linebuf, ignore_eoi ? 1 : -1);
+		pos = next_unfiltered(pos);
+	}
+#endif
+
 	if (!do_repaint)
 	{
 		if (top_scroll && n >= sc_height - 1 && pos != ch_length())
@@ -206,6 +218,9 @@ forw(n, pos, force, only_last, nblank)
 			 * Get the next line from the file.
 			 */
 			pos = forw_line(pos);
+#if HILITE_SEARCH
+			pos = next_unfiltered(pos);
+#endif
 			if (pos == NULL_POSITION)
 			{
 				/*
@@ -214,7 +229,6 @@ forw(n, pos, force, only_last, nblank)
 				 * Even if force is true, stop when the last
 				 * line in the file reaches the top of screen.
 				 */
-				eof = 1;
 				if (!force && position(TOP) != NULL_POSITION)
 					break;
 				if (!empty_lines(0, 0) && 
@@ -276,7 +290,7 @@ forw(n, pos, force, only_last, nblank)
 		forw_prompt = 1;
 	}
 
-	if (nlines == 0)
+	if (nlines == 0 && same_pos_bell)
 		eof_bell();
 	else if (do_repaint)
 		repaint();
@@ -299,11 +313,20 @@ back(n, pos, force, only_last)
 
 	squish_check();
 	do_repaint = (n > get_back_scroll() || (only_last && n > sc_height-1));
+#if HILITE_SEARCH
+	if (hilite_search == OPT_ONPLUS || is_filtering() || status_col) {
+		prep_hilite((pos < 3*size_linebuf) ?  0 : pos - 3*size_linebuf, pos, -1);
+	}
+#endif
 	while (--n >= 0)
 	{
 		/*
 		 * Get the previous line of input.
 		 */
+#if HILITE_SEARCH
+		pos = prev_unfiltered(pos);
+#endif
+
 		pos = back_line(pos);
 		if (pos == NULL_POSITION)
 		{
@@ -327,7 +350,7 @@ back(n, pos, force, only_last)
 		}
 	}
 
-	if (nlines == 0)
+	if (nlines == 0 && same_pos_bell)
 		eof_bell();
 	else if (do_repaint)
 		repaint();
diff --git a/contrib/less/funcs.h b/contrib/less/funcs.h
index 325ba0e..53550f0 100644
--- a/contrib/less/funcs.h
+++ b/contrib/less/funcs.h
@@ -38,6 +38,7 @@
 	public void sync_logfile ();
 	public int ch_seek ();
 	public int ch_end_seek ();
+	public int ch_end_buffer_seek ();
 	public int ch_beg_seek ();
 	public POSITION ch_length ();
 	public POSITION ch_tell ();
@@ -58,6 +59,7 @@
 	public char * prutfchar ();
 	public int utf_len ();
 	public int is_utf8_well_formed ();
+	public int utf_bin_count ();
 	public LWCHAR get_wchar ();
 	public void put_wchar ();
 	public LWCHAR step_char ();
@@ -158,6 +160,7 @@
 	public POSITION back_line ();
 	public void set_attnpos ();
 	public void jump_forw ();
+	public void jump_forw_buffered ();
 	public void jump_back ();
 	public void repaint ();
 	public void jump_percent ();
@@ -227,7 +230,7 @@
 	public struct loption * findopt_name ();
 	public int iread ();
 	public void intread ();
-	public long get_time ();
+	public time_type get_time ();
 	public char * errno_message ();
 	public int percentage ();
 	public POSITION percent_pos ();
@@ -242,6 +245,7 @@
 	public int query ();
 	public int compile_pattern ();
 	public void uncompile_pattern ();
+	public int valid_pattern ();
 	public int is_null_pattern ();
 	public int match_pattern ();
 	public POSITION position ();
@@ -267,6 +271,8 @@
 	public void clr_hilite ();
 	public void clr_filter ();
 	public int is_filtered ();
+	public POSITION next_unfiltered ();
+	public POSITION prev_unfiltered ();
 	public int is_hilited ();
 	public void chg_caseless ();
 	public void chg_hilite ();
diff --git a/contrib/less/help.c b/contrib/less/help.c
index 46b8ff1..aba7116 100644
--- a/contrib/less/help.c
+++ b/contrib/less/help.c
@@ -26,6 +26,7 @@ constant char helpdata[] = {
 ' ',' ','E','S','C','-',')',' ',' ','R','i','g','h','t','A','r','r','o','w',' ','*',' ',' ','L','e','f','t',' ',' ','o','n','e',' ','h','a','l','f',' ','s','c','r','e','e','n',' ','w','i','d','t','h',' ','(','o','r',' ','_','\b','N',' ','p','o','s','i','t','i','o','n','s',')','.','\n',
 ' ',' ','E','S','C','-','(',' ',' ','L','e','f','t','A','r','r','o','w',' ',' ','*',' ',' ','R','i','g','h','t',' ','o','n','e',' ','h','a','l','f',' ','s','c','r','e','e','n',' ','w','i','d','t','h',' ','(','o','r',' ','_','\b','N',' ','p','o','s','i','t','i','o','n','s',')','.','\n',
 ' ',' ','F',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','F','o','r','w','a','r','d',' ','f','o','r','e','v','e','r',';',' ','l','i','k','e',' ','"','t','a','i','l',' ','-','f','"','.','\n',
+' ',' ','E','S','C','-','F',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','L','i','k','e',' ','F',' ','b','u','t',' ','s','t','o','p',' ','w','h','e','n',' ','s','e','a','r','c','h',' ','p','a','t','t','e','r','n',' ','i','s',' ','f','o','u','n','d','.','\n',
 ' ',' ','r',' ',' ','^','R',' ',' ','^','L',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','R','e','p','a','i','n','t',' ','s','c','r','e','e','n','.','\n',
 ' ',' ','R',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','R','e','p','a','i','n','t',' ','s','c','r','e','e','n',',',' ','d','i','s','c','a','r','d','i','n','g',' ','b','u','f','f','e','r','e','d',' ','i','n','p','u','t','.','\n',
 ' ',' ',' ',' ',' ',' ',' ',' ','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','\n',
@@ -204,6 +205,8 @@ constant char helpdata[] = {
 ' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','D','o','n','\'','t',' ','s','e','n','d',' ','t','e','r','m','c','a','p',' ','k','e','y','p','a','d',' ','i','n','i','t','/','d','e','i','n','i','t',' ','s','t','r','i','n','g','s','.','\n',
 ' ',' ',' ',' ',' ',' ','.','.','.','.','.','.','.','.',' ',' ','-','-','f','o','l','l','o','w','-','n','a','m','e','\n',
 ' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','T','h','e',' ','F',' ','c','o','m','m','a','n','d',' ','c','h','a','n','g','e','s',' ','f','i','l','e','s',' ','i','f',' ','t','h','e',' ','i','n','p','u','t',' ','f','i','l','e',' ','i','s',' ','r','e','n','a','m','e','d','.','\n',
+' ',' ',' ',' ',' ',' ','.','.','.','.','.','.','.','.',' ',' ','-','-','u','s','e','-','b','a','c','k','s','l','a','s','h','\n',
+' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','S','u','b','s','e','q','u','e','n','t',' ','o','p','t','i','o','n','s',' ','u','s','e',' ','b','a','c','k','s','l','a','s','h',' ','a','s',' ','e','s','c','a','p','e',' ','c','h','a','r','.','\n',
 '\n',
 '\n',
 ' ','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','\n',
@@ -213,22 +216,22 @@ constant char helpdata[] = {
 ' ',' ',' ',' ',' ',' ',' ',' ','T','h','e','s','e',' ','k','e','y','s',' ','c','a','n',' ','b','e',' ','u','s','e','d',' ','t','o',' ','e','d','i','t',' ','t','e','x','t',' ','b','e','i','n','g',' ','e','n','t','e','r','e','d',' ','\n',
 ' ',' ',' ',' ',' ',' ',' ',' ','o','n',' ','t','h','e',' ','"','c','o','m','m','a','n','d',' ','l','i','n','e','"',' ','a','t',' ','t','h','e',' ','b','o','t','t','o','m',' ','o','f',' ','t','h','e',' ','s','c','r','e','e','n','.','\n',
 '\n',
-' ','R','i','g','h','t','A','r','r','o','w',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','E','S','C','-','l',' ',' ',' ',' ',' ','M','o','v','e',' ','c','u','r','s','o','r',' ','r','i','g','h','t',' ','o','n','e',' ','c','h','a','r','a','c','t','e','r','.','\n',
-' ','L','e','f','t','A','r','r','o','w',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','E','S','C','-','h',' ',' ',' ',' ',' ','M','o','v','e',' ','c','u','r','s','o','r',' ','l','e','f','t',' ','o','n','e',' ','c','h','a','r','a','c','t','e','r','.','\n',
-' ','c','t','r','l','-','R','i','g','h','t','A','r','r','o','w',' ',' ','E','S','C','-','R','i','g','h','t','A','r','r','o','w',' ',' ','E','S','C','-','w',' ',' ',' ',' ',' ','M','o','v','e',' ','c','u','r','s','o','r',' ','r','i','g','h','t',' ','o','n','e',' ','w','o','r','d','.','\n',
-' ','c','t','r','l','-','L','e','f','t','A','r','r','o','w',' ',' ',' ','E','S','C','-','L','e','f','t','A','r','r','o','w',' ',' ',' ','E','S','C','-','b',' ',' ',' ',' ',' ','M','o','v','e',' ','c','u','r','s','o','r',' ','l','e','f','t',' ','o','n','e',' ','w','o','r','d','.','\n',
-' ','H','O','M','E',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','E','S','C','-','0',' ',' ',' ',' ',' ','M','o','v','e',' ','c','u','r','s','o','r',' ','t','o',' ','s','t','a','r','t',' ','o','f',' ','l','i','n','e','.','\n',
-' ','E','N','D',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','E','S','C','-','$',' ',' ',' ',' ',' ','M','o','v','e',' ','c','u','r','s','o','r',' ','t','o',' ','e','n','d',' ','o','f',' ','l','i','n','e','.','\n',
-' ','B','A','C','K','S','P','A','C','E',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','D','e','l','e','t','e',' ','c','h','a','r',' ','t','o',' ','l','e','f','t',' ','o','f',' ','c','u','r','s','o','r','.','\n',
-' ','D','E','L','E','T','E',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','E','S','C','-','x',' ',' ',' ',' ',' ','D','e','l','e','t','e',' ','c','h','a','r',' ','u','n','d','e','r',' ','c','u','r','s','o','r','.','\n',
-' ','c','t','r','l','-','B','A','C','K','S','P','A','C','E',' ',' ',' ','E','S','C','-','B','A','C','K','S','P','A','C','E',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','D','e','l','e','t','e',' ','w','o','r','d',' ','t','o',' ','l','e','f','t',' ','o','f',' ','c','u','r','s','o','r','.','\n',
-' ','c','t','r','l','-','D','E','L','E','T','E',' ',' ',' ',' ',' ',' ','E','S','C','-','D','E','L','E','T','E',' ',' ',' ',' ',' ',' ','E','S','C','-','X',' ',' ',' ',' ',' ','D','e','l','e','t','e',' ','w','o','r','d',' ','u','n','d','e','r',' ','c','u','r','s','o','r','.','\n',
-' ','c','t','r','l','-','U',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','E','S','C',' ','(','M','S','-','D','O','S',' ','o','n','l','y',')',' ',' ',' ',' ',' ',' ',' ',' ',' ','D','e','l','e','t','e',' ','e','n','t','i','r','e',' ','l','i','n','e','.','\n',
-' ','U','p','A','r','r','o','w',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','E','S','C','-','k',' ',' ',' ',' ',' ','R','e','t','r','i','e','v','e',' ','p','r','e','v','i','o','u','s',' ','c','o','m','m','a','n','d',' ','l','i','n','e','.','\n',
-' ','D','o','w','n','A','r','r','o','w',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','E','S','C','-','j',' ',' ',' ',' ',' ','R','e','t','r','i','e','v','e',' ','n','e','x','t',' ','c','o','m','m','a','n','d',' ','l','i','n','e','.','\n',
-' ','T','A','B',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','C','o','m','p','l','e','t','e',' ','f','i','l','e','n','a','m','e',' ','&',' ','c','y','c','l','e','.','\n',
-' ','S','H','I','F','T','-','T','A','B',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','E','S','C','-','T','A','B',' ',' ',' ','C','o','m','p','l','e','t','e',' ','f','i','l','e','n','a','m','e',' ','&',' ','r','e','v','e','r','s','e',' ','c','y','c','l','e','.','\n',
-' ','c','t','r','l','-','L',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','C','o','m','p','l','e','t','e',' ','f','i','l','e','n','a','m','e',',',' ','l','i','s','t',' ','a','l','l','.','\n',
+' ','R','i','g','h','t','A','r','r','o','w',' ','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.',' ','E','S','C','-','l',' ','.','.','.',' ','M','o','v','e',' ','c','u','r','s','o','r',' ','r','i','g','h','t',' ','o','n','e',' ','c','h','a','r','a','c','t','e','r','.','\n',
+' ','L','e','f','t','A','r','r','o','w',' ','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.',' ','E','S','C','-','h',' ','.','.','.',' ','M','o','v','e',' ','c','u','r','s','o','r',' ','l','e','f','t',' ','o','n','e',' ','c','h','a','r','a','c','t','e','r','.','\n',
+' ','c','t','r','l','-','R','i','g','h','t','A','r','r','o','w',' ',' ','E','S','C','-','R','i','g','h','t','A','r','r','o','w',' ',' ','E','S','C','-','w',' ','.','.','.',' ','M','o','v','e',' ','c','u','r','s','o','r',' ','r','i','g','h','t',' ','o','n','e',' ','w','o','r','d','.','\n',
+' ','c','t','r','l','-','L','e','f','t','A','r','r','o','w',' ',' ',' ','E','S','C','-','L','e','f','t','A','r','r','o','w',' ',' ',' ','E','S','C','-','b',' ','.','.','.',' ','M','o','v','e',' ','c','u','r','s','o','r',' ','l','e','f','t',' ','o','n','e',' ','w','o','r','d','.','\n',
+' ','H','O','M','E',' ','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.',' ','E','S','C','-','0',' ','.','.','.',' ','M','o','v','e',' ','c','u','r','s','o','r',' ','t','o',' ','s','t','a','r','t',' ','o','f',' ','l','i','n','e','.','\n',
+' ','E','N','D',' ','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.',' ','E','S','C','-','$',' ','.','.','.',' ','M','o','v','e',' ','c','u','r','s','o','r',' ','t','o',' ','e','n','d',' ','o','f',' ','l','i','n','e','.','\n',
+' ','B','A','C','K','S','P','A','C','E',' ','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.',' ','D','e','l','e','t','e',' ','c','h','a','r',' ','t','o',' ','l','e','f','t',' ','o','f',' ','c','u','r','s','o','r','.','\n',
+' ','D','E','L','E','T','E',' ','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.',' ','E','S','C','-','x',' ','.','.','.',' ','D','e','l','e','t','e',' ','c','h','a','r',' ','u','n','d','e','r',' ','c','u','r','s','o','r','.','\n',
+' ','c','t','r','l','-','B','A','C','K','S','P','A','C','E',' ',' ',' ','E','S','C','-','B','A','C','K','S','P','A','C','E',' ','.','.','.','.','.','.','.','.','.','.','.',' ','D','e','l','e','t','e',' ','w','o','r','d',' ','t','o',' ','l','e','f','t',' ','o','f',' ','c','u','r','s','o','r','.','\n',
+' ','c','t','r','l','-','D','E','L','E','T','E',' ','.','.','.','.',' ','E','S','C','-','D','E','L','E','T','E',' ','.','.','.','.',' ','E','S','C','-','X',' ','.','.','.',' ','D','e','l','e','t','e',' ','w','o','r','d',' ','u','n','d','e','r',' ','c','u','r','s','o','r','.','\n',
+' ','c','t','r','l','-','U',' ','.','.','.','.','.','.','.','.','.',' ','E','S','C',' ','(','M','S','-','D','O','S',' ','o','n','l','y',')',' ','.','.','.','.','.','.','.',' ','D','e','l','e','t','e',' ','e','n','t','i','r','e',' ','l','i','n','e','.','\n',
+' ','U','p','A','r','r','o','w',' ','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.',' ','E','S','C','-','k',' ','.','.','.',' ','R','e','t','r','i','e','v','e',' ','p','r','e','v','i','o','u','s',' ','c','o','m','m','a','n','d',' ','l','i','n','e','.','\n',
+' ','D','o','w','n','A','r','r','o','w',' ','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.',' ','E','S','C','-','j',' ','.','.','.',' ','R','e','t','r','i','e','v','e',' ','n','e','x','t',' ','c','o','m','m','a','n','d',' ','l','i','n','e','.','\n',
+' ','T','A','B',' ','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.',' ','C','o','m','p','l','e','t','e',' ','f','i','l','e','n','a','m','e',' ','&',' ','c','y','c','l','e','.','\n',
+' ','S','H','I','F','T','-','T','A','B',' ','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.',' ','E','S','C','-','T','A','B',' ',' ',' ','C','o','m','p','l','e','t','e',' ','f','i','l','e','n','a','m','e',' ','&',' ','r','e','v','e','r','s','e',' ','c','y','c','l','e','.','\n',
+' ','c','t','r','l','-','L',' ','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.','.',' ','C','o','m','p','l','e','t','e',' ','f','i','l','e','n','a','m','e',',',' ','l','i','s','t',' ','a','l','l','.','\n',
 '\n',
 '\n',
  0 };
diff --git a/contrib/less/ifile.c b/contrib/less/ifile.c
index 3e5e855..fea2ea1 100644
--- a/contrib/less/ifile.c
+++ b/contrib/less/ifile.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
diff --git a/contrib/less/input.c b/contrib/less/input.c
index b211323..9419a02 100644
--- a/contrib/less/input.c
+++ b/contrib/less/input.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
@@ -60,6 +60,7 @@ get_forw_line:
 	}
 #if HILITE_SEARCH
 	if (hilite_search == OPT_ONPLUS || is_filtering() || status_col)
+	{
 		/*
 		 * If we are ignoring EOI (command F), only prepare
 		 * one line ahead, to avoid getting stuck waiting for
@@ -69,6 +70,8 @@ get_forw_line:
 		 */
 		prep_hilite(curr_pos, curr_pos + 3*size_linebuf, 
 				ignore_eoi ? 1 : -1);
+		curr_pos = next_unfiltered(curr_pos);
+	}
 #endif
 	if (ch_seek(curr_pos))
 	{
@@ -439,19 +442,22 @@ set_attnpos(pos)
 		{
 			c = ch_forw_get();
 			if (c == EOI)
-				return;
-			if (c != '\n' && c != '\r')
 				break;
+			if (c == '\n' || c == '\r')
+			{
+				(void) ch_back_get();
+				break;
+			}
 			pos++;
 		}
+		end_attnpos = pos;
+		for (;;)
+		{
+			c = ch_back_get();
+			if (c == EOI || c == '\n' || c == '\r')
+				break;
+			pos--;
+		}
 	}
 	start_attnpos = pos;
-	for (;;)
-	{
-		c = ch_forw_get();
-		pos++;
-		if (c == EOI || c == '\n' || c == '\r')
-			break;
-	}
-	end_attnpos = pos;
 }
diff --git a/contrib/less/jump.c b/contrib/less/jump.c
index 075aa64..8373d8b 100644
--- a/contrib/less/jump.c
+++ b/contrib/less/jump.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
@@ -61,6 +61,24 @@ jump_forw()
 }
 
 /*
+ * Jump to the last buffered line in the file.
+ */
+	public void
+jump_forw_buffered()
+{
+	POSITION end;
+
+	if (ch_end_buffer_seek())
+	{
+		error("Cannot seek to end of buffers", NULL_PARG);
+		return;
+	}
+	end = ch_tell();
+	if (end != NULL_POSITION && end > 0)
+		jump_line_loc(end-1, sc_height-1);
+}
+
+/*
  * Jump to line n in the file.
  */
 	public void
@@ -281,6 +299,9 @@ jump_loc(pos, sline)
 				 */
 				break;
 			}
+#if HILITE_SEARCH
+			pos = next_unfiltered(pos);
+#endif
 			if (pos >= tpos)
 			{
 				/* 
diff --git a/contrib/less/less.h b/contrib/less/less.h
index fada513..f57fb1e 100644
--- a/contrib/less/less.h
+++ b/contrib/less/less.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
@@ -295,6 +295,15 @@ struct scrpos
 	int ln;
 };
 
+/*
+ * A mark is an ifile (input file) plus a position within the file.
+ */
+struct mark 
+{
+	IFILE m_ifile;
+	struct scrpos m_scrpos;
+};
+
 typedef union parg
 {
 	char *p_string;
@@ -310,6 +319,17 @@ struct textlist
 	char *endstring;
 };
 
+struct wchar_range
+{
+	LWCHAR first, last;
+};
+
+struct wchar_range_table 
+{
+	struct wchar_range *table;
+	int count;
+};
+
 #define	EOI		(-1)
 
 #define	READ_INTR	(-2)
@@ -445,6 +465,7 @@ struct textlist
 
 #define	ESC		CONTROL('[')
 #define	CSI		((unsigned char)'\233')
+#define	CHAR_END_COMMAND 0x40000000
 
 #if _OSK_MWC32
 #define	LSIGNAL(sig,func)	os9_signal(sig,func)
@@ -498,6 +519,12 @@ struct textlist
 #define	CVT_CRLF	04	/* Remove CR after LF */
 #define	CVT_ANSI	010	/* Remove ANSI escape sequences */
 
+#if HAVE_TIME_T
+#define time_type	time_t
+#else
+#define	time_type	long
+#endif
+
 #include "funcs.h"
 
 /* Functions not included in funcs.h */
diff --git a/contrib/less/less.hlp b/contrib/less/less.hlp
index 45a7fe5..2a8e3e7 100644
--- a/contrib/less/less.hlp
+++ b/contrib/less/less.hlp
@@ -23,6 +23,7 @@
   ESC-)  RightArrow *  Left  one half screen width (or _N positions).
   ESC-(  LeftArrow  *  Right one half screen width (or _N positions).
   F                    Forward forever; like "tail -f".
+  ESC-F                Like F but stop when search pattern is found.
   r  ^R  ^L            Repaint screen.
   R                    Repaint screen, discarding buffered input.
         ---------------------------------------------------
@@ -201,6 +202,8 @@
                   Don't send termcap keypad init/deinit strings.
       ........  --follow-name
                   The F command changes files if the input file is renamed.
+      ........  --use-backslash
+                  Subsequent options use backslash as escape char.
 
 
  ---------------------------------------------------------------------------
@@ -210,21 +213,21 @@
         These keys can be used to edit text being entered 
         on the "command line" at the bottom of the screen.
 
- RightArrow                       ESC-l     Move cursor right one character.
- LeftArrow                        ESC-h     Move cursor left one character.
- ctrl-RightArrow  ESC-RightArrow  ESC-w     Move cursor right one word.
- ctrl-LeftArrow   ESC-LeftArrow   ESC-b     Move cursor left one word.
- HOME                             ESC-0     Move cursor to start of line.
- END                              ESC-$     Move cursor to end of line.
- BACKSPACE                                  Delete char to left of cursor.
- DELETE                           ESC-x     Delete char under cursor.
- ctrl-BACKSPACE   ESC-BACKSPACE             Delete word to left of cursor.
- ctrl-DELETE      ESC-DELETE      ESC-X     Delete word under cursor.
- ctrl-U           ESC (MS-DOS only)         Delete entire line.
- UpArrow                          ESC-k     Retrieve previous command line.
- DownArrow                        ESC-j     Retrieve next command line.
- TAB                                        Complete filename & cycle.
- SHIFT-TAB                        ESC-TAB   Complete filename & reverse cycle.
- ctrl-L                                     Complete filename, list all.
+ RightArrow ..................... ESC-l ... Move cursor right one character.
+ LeftArrow ...................... ESC-h ... Move cursor left one character.
+ ctrl-RightArrow  ESC-RightArrow  ESC-w ... Move cursor right one word.
+ ctrl-LeftArrow   ESC-LeftArrow   ESC-b ... Move cursor left one word.
+ HOME ........................... ESC-0 ... Move cursor to start of line.
+ END ............................ ESC-$ ... Move cursor to end of line.
+ BACKSPACE ................................ Delete char to left of cursor.
+ DELETE ......................... ESC-x ... Delete char under cursor.
+ ctrl-BACKSPACE   ESC-BACKSPACE ........... Delete word to left of cursor.
+ ctrl-DELETE .... ESC-DELETE .... ESC-X ... Delete word under cursor.
+ ctrl-U ......... ESC (MS-DOS only) ....... Delete entire line.
+ UpArrow ........................ ESC-k ... Retrieve previous command line.
+ DownArrow ...................... ESC-j ... Retrieve next command line.
+ TAB ...................................... Complete filename & cycle.
+ SHIFT-TAB ...................... ESC-TAB   Complete filename & reverse cycle.
+ ctrl-L ................................... Complete filename, list all.
 
 
diff --git a/contrib/less/less.nro b/contrib/less/less.nro
index eba98ee..b3d9874 100644
--- a/contrib/less/less.nro
+++ b/contrib/less/less.nro
@@ -1,4 +1,4 @@
-.TH LESS 1 "Version 458: 04 Apr 2013"
+.TH LESS 1 "Version 481: 31 Aug 2015"
 .SH NAME
 less \- opposite of more
 .SH SYNOPSIS
@@ -12,19 +12,19 @@ less \- opposite of more
 .br
 .B "less [\-[+]aABcCdeEfFgGiIJKLmMnNqQrRsSuUVwWX~]"
 .br
-.B "     [\-b \fIspace\fP] [\-h \fIlines\fP] [\-j \fIline\fP] [\-k \fIkeyfile\fP]"
+.B "     [\-b \fIspace\/\fP] [\-h \fIlines\/\fP] [\-j \fIline\/\fP] [\-k \fIkeyfile\/\fP]"
 .br
-.B "     [\-{oO} \fIlogfile\fP] [\-p \fIpattern\fP] [\-P \fIprompt\fP] [\-t \fItag\fP]"
+.B "     [\-{oO} \fIlogfile\/\fP] [\-p \fIpattern\/\fP] [\-P \fIprompt\/\fP] [\-t \fItag\/\fP]"
 .br
-.B "     [\-T \fItagsfile\fP] [\-x \fItab\fP,...] [\-y \fIlines\fP] [\-[z] \fIlines\fP]"
+.B "     [\-T \fItagsfile\/\fP] [\-x \fItab\/\fP,...] [\-y \fIlines\/\fP] [\-[z] \fIlines\/\fP]"
 .br
-.B "     [\-# \fIshift\fP] [+[+]\fIcmd\fP] [\-\-] [\fIfilename\fP]..."
+.B "     [\-# \fIshift\/\fP] [+[+]\fIcmd\/\fP] [\-\-] [\fIfilename\/\fP]..."
 .br
 (See the OPTIONS section for alternate option syntax with long option names.)
 
 .SH DESCRIPTION
 .I Less
-is a program similar to 
+is a program similar to
 .I more
 (1), but which allows backward movement
 in the file as well as forward movement.
@@ -45,7 +45,7 @@ Commands are based on both
 .I more
 and
 .I vi.
-Commands may be preceded by a decimal number, 
+Commands may be preceded by a decimal number,
 called N in the descriptions below.
 The number is used by some commands, as indicated.
 
@@ -70,7 +70,7 @@ Scroll forward N lines, default 1.
 The entire N lines are displayed, even if N is more than the screen size.
 .IP "d or ^D"
 Scroll forward N lines, default one half of the screen size.
-If N is specified, it becomes the new default for 
+If N is specified, it becomes the new default for
 subsequent d and u commands.
 .IP "b or ^B or ESC-v"
 Scroll backward N lines, default one window (see option \-z below).
@@ -83,8 +83,12 @@ The entire N lines are displayed, even if N is more than the screen size.
 Warning: some systems use ^Y as a special job control character.
 .IP "u or ^U"
 Scroll backward N lines, default one half of the screen size.
-If N is specified, it becomes the new default for 
+If N is specified, it becomes the new default for
 subsequent d and u commands.
+.IP "J"
+Like j, but continues to scroll beyond the end of the file.
+.IP "K or Y"
+Like k, but continues to scroll beyond the beginning of the file.
 .IP "ESC-) or RIGHTARROW"
 Scroll horizontally right N characters, default half the screen width
 (see the \-# option).
@@ -111,7 +115,7 @@ while it is being viewed.
 (The behavior is similar to the "tail \-f" command.)
 .IP "ESC-F"
 Like F, but as soon as a line is found which matches
-the last search pattern, the terminal bell is rung 
+the last search pattern, the terminal bell is rung
 and forward scrolling stops.
 .IP "g or < or ESC-<"
 Go to line N in the file, default 1 (beginning of file).
@@ -121,6 +125,9 @@ Go to line N in the file, default the end of the file.
 (Warning: this may be slow if N is large,
 or if N is not specified and
 standard input, rather than a file, is being read.)
+.IP "ESC-G"
+Same as G, except if no number N is specified and the input is standard input,
+goes to the last line which is currently buffered.
 .IP "p or %"
 Go to a position N percent into the file.
 N should be between 0 and 100, and may contain a decimal point.
@@ -154,16 +161,16 @@ Like }, but applies to square brackets rather than curly brackets.
 Followed by two characters,
 acts like {, but uses the two characters as open and close brackets,
 respectively.
-For example, "ESC ^F < >" could be used to 
+For example, "ESC ^F < >" could be used to
 go forward to the > which matches the < in the top displayed line.
 .IP "ESC-^B"
 Followed by two characters,
 acts like }, but uses the two characters as open and close brackets,
 respectively.
-For example, "ESC ^B < >" could be used to 
+For example, "ESC ^B < >" could be used to
 go backward to the < which matches the > in the bottom displayed line.
 .IP m
-Followed by any lowercase letter, 
+Followed by any lowercase letter,
 marks the current position with that letter.
 .IP "'"
 (Single quote.)
@@ -193,7 +200,7 @@ they modify the type of search rather than become part of the pattern:
 Search for lines which do NOT match the pattern.
 .IP "^E or *"
 Search multiple files.
-That is, if the search reaches the END of the current file 
+That is, if the search reaches the END of the current file
 without finding a match,
 the search continues in the next file in the command line list.
 .IP "^F or @"
@@ -202,7 +209,7 @@ in the command line list,
 regardless of what is currently displayed on the screen
 or the settings of the \-a or \-j options.
 .IP "^K"
-Highlight any text which matches the pattern on the current screen, 
+Highlight any text which matches the pattern on the current screen,
 but don't move to the first match (KEEP current position).
 .IP "^R"
 Don't interpret regular expression metacharacters;
@@ -210,7 +217,8 @@ that is, do a simple textual comparison.
 .RE
 .IP ?pattern
 Search backward in the file for the N-th line containing the pattern.
-The search starts at the line immediately before the top line displayed.
+The search starts at the last line displayed 
+(but see the \-a and \-j options, which change this).
 .sp
 Certain characters are special as in the / command:
 .RS
@@ -218,7 +226,7 @@ Certain characters are special as in the / command:
 Search for lines which do NOT match the pattern.
 .IP "^E or *"
 Search multiple files.
-That is, if the search reaches the beginning of the current file 
+That is, if the search reaches the beginning of the current file
 without finding a match,
 the search continues in the previous file in the command line list.
 .IP "^F or @"
@@ -254,7 +262,7 @@ Repeat previous search, but in the reverse direction
 and crossing file boundaries.
 .IP "ESC-u"
 Undo search highlighting.
-Turn off highlighting of strings matching the current search pattern. 
+Turn off highlighting of strings matching the current search pattern.
 If highlighting is already off because of a previous ESC-u command,
 turn highlighting back on.
 Any search command will also turn highlighting back on.
@@ -282,10 +290,10 @@ Examine a new file.
 If the filename is missing, the "current" file (see the :n and :p commands
 below) from the list of files in the command line is re-examined.
 A percent sign (%) in the filename is replaced by the name of the
-current file.  
+current file.
 A pound sign (#) is replaced by the name of the previously examined file.
-However, two consecutive percent signs are simply 
-replaced with a single percent sign.  
+However, two consecutive percent signs are simply
+replaced with a single percent sign.
 This allows you to enter a filename that contains a percent sign
 in the name.
 Similarly, two consecutive pound signs are replaced with a single pound sign.
@@ -338,7 +346,7 @@ the current setting is printed and nothing is changed.
 Like the \- command, but takes a long option name (see OPTIONS below)
 rather than a single option letter.
 You must press ENTER or RETURN after typing the option name.
-A ^P immediately after the second dash suppresses printing of a 
+A ^P immediately after the second dash suppresses printing of a
 message describing the new setting, as in the \- command.
 .IP \-+
 Followed by one of the command line option letters
@@ -370,19 +378,19 @@ rather than a single option letter.
 You must press ENTER or RETURN after typing the option name.
 .IP +cmd
 Causes the specified cmd to be executed each time a new file is examined.
-For example, +G causes 
+For example, +G causes
 .I less
-to initially display each file starting at the end 
+to initially display each file starting at the end
 rather than the beginning.
 .IP V
-Prints the version number of 
-.I less 
+Prints the version number of
+.I less
 being run.
 .IP "q or Q or :q or :Q or ZZ"
 Exits
 .I less.
 .PP
-The following 
+The following
 four
 commands may or may not be valid, depending on your particular installation.
 .PP
@@ -395,7 +403,7 @@ See also the discussion of LESSEDIT under the section on PROMPTS below.
 .IP "! shell-command"
 Invokes a shell to run the shell-command given.
 A percent sign (%) in the command is replaced by the name of the
-current file.  
+current file.
 A pound sign (#) is replaced by the name of the previously examined file.
 "!!" repeats the last shell command.
 "!" with no shell command simply invokes a shell.
@@ -408,7 +416,7 @@ Pipes a section of the input file to the given shell command.
 The section of the file to be piped is between the first line on
 the current screen and the position marked by the letter.
 <m> may also be ^ or $ to indicate beginning or end of file respectively.
-If <m> is . or newline, the current screen is piped.
+If <m> is \&.\& or newline, the current screen is piped.
 .IP "s filename"
 Save the input to a file.
 This only works if the input is a pipe, not an ordinary file.
@@ -416,16 +424,16 @@ This only works if the input is a pipe, not an ordinary file.
 .SH OPTIONS
 Command line options are described below.
 Most options may be changed while
-.I less 
+.I less
 is running, via the "\-" command.
 .PP
-Most options may be given in one of two forms: 
+Most options may be given in one of two forms:
 either a dash followed by a single letter,
 or two dashes followed by a long option name.
 A long option name may be abbreviated as long as
 the abbreviation is unambiguous.
 For example, \-\-quit-at-eof may be abbreviated \-\-quit, but not
---qui, since both \-\-quit-at-eof and \-\-quiet begin with \-\-qui.
+\-\-qui, since both \-\-quit-at-eof and \-\-quiet begin with \-\-qui.
 Some long option names are in uppercase, such as \-\-QUIT-AT-EOF, as
 distinct from \-\-quit-at-eof.
 Such option names need only have their first letter capitalized;
@@ -433,20 +441,20 @@ the remainder of the name may be in either case.
 For example, \-\-Quit-at-eof is equivalent to \-\-QUIT-AT-EOF.
 .PP
 Options are also taken from the environment variable "LESS".
-For example, 
-to avoid typing "less \-options ..." each time 
-.I less 
-is invoked, you might tell 
+For example,
+to avoid typing "less \-options \&...\&" each time
+.I less
+is invoked, you might tell
 .I csh:
 .sp
-setenv LESS "-options"
+setenv LESS "\-options"
 .sp
-or if you use 
+or if you use
 .I sh:
 .sp
-LESS="-options"; export LESS
+LESS="\-options"; export LESS
 .sp
-On MS-DOS, you don't need the quotes, but you should replace any 
+On MS-DOS, you don't need the quotes, but you should replace any
 percent signs in the options string by double percent signs.
 .sp
 The environment variable is parsed before the command line,
@@ -461,11 +469,11 @@ For example, you can set two \-D options on MS-DOS like this:
 .sp
 LESS="Dn9.1$Ds4.1"
 .sp
-If the --use-backslash option appears earlier in the options, then
+If the \-\-use-backslash option appears earlier in the options, then
 a dollar sign or backslash may be included literally in an option string
 by preceding it with a backslash.
-If the --use-backslash option is not in effect, then backslashes are
-not treated specially, and there is no way to include a dollar sign 
+If the \-\-use-backslash option is not in effect, then backslashes are
+not treated specially, and there is no way to include a dollar sign
 in the option string.
 .IP "\-? or \-\-help"
 This option displays a summary of the commands accepted by
@@ -484,8 +492,8 @@ the bottom of the screen
 and backward searches to start at the top of the screen,
 thus skipping all lines displayed on the screen.
 .IP "\-A or \-\-SEARCH-SKIP-SCREEN"
-Causes all forward searches (not just non-repeated searches) 
-to start just after the target line, and all backward searches 
+Causes all forward searches (not just non-repeated searches)
+to start just after the target line, and all backward searches
 to start just before the target line.
 Thus, forward searches will skip part of the displayed screen
 (from the first line up to and including the target line).
@@ -496,9 +504,9 @@ This was the default behavior in less versions prior to 441.
 Specifies the amount of buffer space
 .I less
 will use for each file, in units of kilobytes (1024 bytes).
-By default 64K of buffer space is used for each file
+By default 64\ K of buffer space is used for each file
 (unless the file is a pipe; see the \-B option).
-The \-b option specifies instead that \fIn\fP kilobytes of 
+The \-b option specifies instead that \fIn\fP kilobytes of
 buffer space should be used for each file.
 If \fIn\fP is \-1, buffer space is unlimited; that is,
 the entire file can be read into memory.
@@ -508,18 +516,18 @@ buffers are allocated automatically as needed.
 If a large amount of data is read from the pipe, this can cause
 a large amount of memory to be allocated.
 The \-B option disables this automatic allocation of buffers for pipes,
-so that only 64K 
+so that only 64\ K
 (or the amount of space specified by the \-b option)
 is used for the pipe.
 Warning: use of \-B can result in erroneous display, since only the
-most recently viewed part of the piped data is kept in memory; 
+most recently viewed part of the piped data is kept in memory;
 any earlier data is lost.
 .IP "\-c or \-\-clear-screen"
 Causes full screen repaints to be painted from the top line down.
 By default,
 full screen repaints are done by scrolling from the bottom of the screen.
 .IP "\-C or \-\-CLEAR-SCREEN"
-Same as \-c, for compatibility with older versions of 
+Same as \-c, for compatibility with older versions of
 .I less.
 .IP "\-d or \-\-dumb"
 The \-d option suppresses the error message
@@ -532,24 +540,24 @@ on a dumb terminal.
 .IP "\-D\fBx\fP\fIcolor\fP or \-\-color=\fBx\fP\fIcolor\fP"
 [MS-DOS only]
 Sets the color of the text displayed.
-\fBx\fP is a single character which selects the type of text whose color is 
+\fBx\fP is a single character which selects the type of text whose color is
 being set: n=normal, s=standout, d=bold, u=underlined, k=blink.
-\fIcolor\fP is a pair of numbers separated by a period.  
-The first number selects the foreground color and the second selects 
+\fIcolor\fP is a pair of numbers separated by a period.
+The first number selects the foreground color and the second selects
 the background color of the text.
 A single number \fIN\fP is the same as \fIN.M\fP,
 where \fIM\fP is the normal background color.
 
 .IP "\-e or \-\-quit-at-eof"
-Causes 
-.I less 
+Causes
+.I less
 to automatically exit
 the second time it reaches end-of-file.
-By default, the only way to exit 
+By default, the only way to exit
 .I less
 is via the "q" command.
 .IP "\-E or \-\-QUIT-AT-EOF"
-Causes 
+Causes
 .I less
 to automatically exit the first time it reaches end-of-file.
 .IP "\-f or \-\-force"
@@ -567,13 +575,13 @@ Causes
 to automatically exit
 if the entire file can be displayed on the first screen.
 .IP "\-g or \-\-hilite-search"
-Normally, 
-.I less 
+Normally,
+.I less
 will highlight ALL strings which match the last search command.
-The \-g option changes this behavior to highlight only the particular string 
+The \-g option changes this behavior to highlight only the particular string
 which was found by the last search command.
-This can cause 
-.I less 
+This can cause
+.I less
 to run somewhat faster than the default.
 .IP "\-G or \-\-HILITE-SEARCH"
 The \-G option suppresses all highlighting of strings found by search commands.
@@ -587,11 +595,11 @@ backward, \-h0 is implied.)
 Causes searches to ignore case; that is,
 uppercase and lowercase are considered identical.
 This option is ignored if any uppercase letters
-appear in the search pattern; 
+appear in the search pattern;
 in other words,
 if a pattern contains uppercase letters, then that search does not ignore case.
 .IP "\-I or \-\-IGNORE-CASE"
-Like \-i, but searches ignore case even if 
+Like \-i, but searches ignore case even if
 the pattern contains uppercase letters.
 .IP "\-j\fIn\fP or \-\-jump-target=\fIn\fP"
 Specifies a line on the screen where the "target" line
@@ -605,18 +613,21 @@ The number may be negative to specify a line relative to the bottom
 of the screen: the bottom line on the screen is \-1, the second
 to the bottom is \-2, and so on.
 Alternately, the screen line may be specified as a fraction of the height
-of the screen, starting with a decimal point: .5 is in the middle of the
-screen, .3 is three tenths down from the first line, and so on.
+of the screen, starting with a decimal point: \&.5 is in the middle of the
+screen, \&.3 is three tenths down from the first line, and so on.
 If the line is specified as a fraction, the actual line number
 is recalculated if the terminal window is resized, so that the
 target line remains at the specified fraction of the screen height.
-If any form of the \-j option is used, 
-forward searches begin at the line immediately after the target line,
-and backward searches begin at the target line,
+If any form of the \-j option is used,
+repeated forward searches (invoked with "n" or "N")
+begin at the line immediately after the target line,
+and repeated backward searches begin at the target line,
 unless changed by \-a or \-A.
 For example, if "\-j4" is used, the target line is the
 fourth line on the screen, so forward searches begin at the fifth line
 on the screen.
+However nonrepeated searches (invoked with "/" or "?")
+always begin at the start or end of the current screen respectively.
 .IP "\-J or \-\-status-column"
 Displays a status column at the left edge of the screen.
 The status column shows the lines that matched the current search.
@@ -630,7 +641,7 @@ to open and interpret the named file as a
 Multiple \-k options may be specified.
 If the LESSKEY or LESSKEY_SYSTEM environment variable is set, or
 if a lesskey file is found in a standard place (see KEY BINDINGS),
-it is also used as a 
+it is also used as a
 .I lesskey
 file.
 .IP "\-K or \-\-quit-on-intr"
@@ -641,16 +652,16 @@ when an interrupt character (usually ^C) is typed.
 Normally, an interrupt character causes
 .I less
 to stop whatever it is doing and return to its command prompt.
-Note that use of this option makes it impossible to return to the 
+Note that use of this option makes it impossible to return to the
 command prompt from the "F" command.
 .IP "\-L or \-\-no-lessopen"
 Ignore the LESSOPEN environment variable
 (see the INPUT PREPROCESSOR section below).
-This option can be set from within \fIless\fP, 
-but it will apply only to files opened subsequently, not to the 
+This option can be set from within \fIless\fP,
+but it will apply only to files opened subsequently, not to the
 file which is currently open.
 .IP "\-m or \-\-long-prompt"
-Causes 
+Causes
 .I less
 to prompt verbosely (like \fImore\fP),
 with the percent into the file.
@@ -658,9 +669,9 @@ By default,
 .I less
 prompts with a colon.
 .IP "\-M or \-\-LONG-PROMPT"
-Causes 
+Causes
 .I less
-to prompt even more verbosely than 
+to prompt even more verbosely than
 .I more.
 .IP "\-n or \-\-line-numbers"
 Suppresses line numbers.
@@ -681,7 +692,7 @@ Causes
 to copy its input to the named file as it is being viewed.
 This applies only when the input file is a pipe,
 not an ordinary file.
-If the file already exists, 
+If the file already exists,
 .I less
 will ask for confirmation before overwriting it.
 .IP "\-O\fIfilename\fP or \-\-LOG-FILE=\fIfilename\fP"
@@ -689,14 +700,14 @@ The \-O option is like \-o, but it will overwrite an existing
 file without asking for confirmation.
 .sp
 If no log file has been specified,
-the \-o and \-O options can be used from within 
+the \-o and \-O options can be used from within
 .I less
 to specify a log file.
 Without a file name, they will simply report the name of the log file.
 The "s" command is equivalent to specifying \-o from within
 .I less.
 .IP "\-p\fIpattern\fP or \-\-pattern=\fIpattern\fP"
-The \-p option on the command line is equivalent to 
+The \-p option on the command line is equivalent to
 specifying +/\fIpattern\fP;
 that is, it tells
 .I less
@@ -705,24 +716,24 @@ to start at the first occurrence of \fIpattern\fP in the file.
 Provides a way to tailor the three prompt
 styles to your own preference.
 This option would normally be put in the LESS environment
-variable, rather than being typed in with each 
+variable, rather than being typed in with each
 .I less
 command.
 Such an option must either be the last option in the LESS variable,
 or be terminated by a dollar sign.
--Ps followed by a string changes the default (short) prompt 
+ \-Ps followed by a string changes the default (short) prompt
 to that string.
--Pm changes the medium (\-m) prompt.
--PM changes the long (\-M) prompt.
--Ph changes the prompt for the help screen.
--P= changes the message printed by the = command.
--Pw changes the message printed while waiting for data (in the F command).
-All prompt strings consist of a sequence of 
+ \-Pm changes the medium (\-m) prompt.
+ \-PM changes the long (\-M) prompt.
+ \-Ph changes the prompt for the help screen.
+ \-P= changes the message printed by the = command.
+ \-Pw changes the message printed while waiting for data (in the F command).
+All prompt strings consist of a sequence of
 letters and special escape sequences.
 See the section on PROMPTS for more details.
 .IP "\-q or \-\-quiet or \-\-silent"
 Causes moderately "quiet" operation:
-the terminal bell is not rung 
+the terminal bell is not rung
 if an attempt is made to scroll past the end of the file
 or before the beginning of the file.
 If the terminal has a "visual bell", it is used instead.
@@ -748,9 +759,9 @@ Like \-r, but only ANSI "color" escape sequences are output in "raw" form.
 Unlike \-r, the screen appearance is maintained correctly in most cases.
 ANSI "color" escape sequences are sequences of the form:
 .sp
-	ESC [ ... m
+	ESC [ \&...\& m
 .sp
-where the "..." is zero or more color specification characters 
+where the "...\&" is zero or more color specification characters
 For the purpose of keeping track of screen appearance,
 ANSI color escape sequences are assumed to not move the cursor.
 You can make
@@ -758,9 +769,9 @@ You can make
 think that characters other than "m" can end ANSI color escape sequences
 by setting the environment variable LESSANSIENDCHARS to the list of
 characters which can end a color escape sequence.
-And you can make 
-.I less 
-think that characters other than the standard ones may appear between 
+And you can make
+.I less
+think that characters other than the standard ones may appear between
 the ESC and the m by setting the environment variable LESSANSIMIDCHARS
 to the list of characters which can appear.
 .IP "\-s or \-\-squeeze-blank-lines"
@@ -780,16 +791,16 @@ The \-t option, followed immediately by a TAG,
 will edit the file containing that tag.
 For this to work, tag information must be available;
 for example, there may be a file in the current directory called "tags",
-which was previously built by 
+which was previously built by
 .I ctags
 (1) or an equivalent command.
 If the environment variable LESSGLOBALTAGS is set, it is taken to be
-the name of a command compatible with 
+the name of a command compatible with
 .I global
 (1), and that command is executed to find the tag.
 (See http://www.gnu.org/software/global/global.html).
-The \-t option may also be specified from within 
-.I less 
+The \-t option may also be specified from within
+.I less
 (using the \- command) as a way of examining a new file.
 The command ":t" is equivalent to specifying \-t from within
 .I less.
@@ -799,18 +810,18 @@ Specifies a tags file to be used instead of "tags".
 Causes backspaces and carriage returns to be treated as printable characters;
 that is, they are sent to the terminal when they appear in the input.
 .IP "\-U or \-\-UNDERLINE-SPECIAL"
-Causes backspaces, tabs and carriage returns to be 
+Causes backspaces, tabs and carriage returns to be
 treated as control characters;
 that is, they are handled as specified by the \-r option.
 .sp
 By default, if neither \-u nor \-U is given,
 backspaces which appear adjacent to an underscore character
 are treated specially:
-the underlined text is displayed 
+the underlined text is displayed
 using the terminal's hardware underlining capability.
 Also, backspaces which appear between two identical characters
-are treated specially: 
-the overstruck text is printed 
+are treated specially:
+the overstruck text is printed
 using the terminal's hardware boldface capability.
 Other backspaces are deleted, along with the preceding character.
 Carriage returns immediately followed by a newline are deleted.
@@ -818,7 +829,7 @@ Other carriage returns are handled as specified by the \-r option.
 Text which is overstruck or underlined can be searched for
 if neither \-u nor \-U is in effect.
 .IP "\-V or \-\-version"
-Displays the version number of 
+Displays the version number of
 .I less.
 .IP "\-w or \-\-hilite-unread"
 Temporarily highlights the first "new" line after a forward movement
@@ -830,9 +841,9 @@ The highlight is removed at the next command which causes movement.
 The entire line is highlighted, unless the \-J option is in effect,
 in which case only the status column is highlighted.
 .IP "\-W or \-\-HILITE-UNREAD"
-Like \-w, but temporarily highlights the first new line after any 
+Like \-w, but temporarily highlights the first new line after any
 forward movement command larger than one line.
-.IP "\-x\fIn\fP,... or \-\-tabs=\fIn\fP,..."
+.IP "\-x\fIn\fP,...\& or \-\-tabs=\fIn\fP,..."
 Sets tab stops.
 If only one \fIn\fP is specified, tab stops are set at multiples of \fIn\fP.
 If multiple values separated by commas are specified, tab stops
@@ -856,14 +867,14 @@ By default, any forward movement causes scrolling.
 Changes the default scrolling window size to \fIn\fP lines.
 The default is one screenful.
 The z and w commands can also be used to change the window size.
-The "z" may be omitted for compatibility with some versions of 
+The "z" may be omitted for compatibility with some versions of
 .I more.
 If the number
 .I n
-is negative, it indicates 
+is negative, it indicates
 .I n
 lines less than the current screen size.
-For example, if the screen is 24 lines, \fI\-z-4\fP sets the 
+For example, if the screen is 24 lines, \fI\-z\-4\fP sets the
 scrolling window to 20 lines.  If the screen is resized to 40 lines,
 the scrolling window automatically changes to 36 lines.
 .IP "\-\fI\(dqcc\fP\ or\ \-\-quotes=\fIcc\fP"
@@ -889,14 +900,14 @@ in the RIGHTARROW and LEFTARROW commands.
 If the number specified is zero, it sets the default number of
 positions to one half of the screen width.
 Alternately, the number may be specified as a fraction of the width
-of the screen, starting with a decimal point: .5 is half of the
-screen width, .3 is three tenths of the screen width, and so on.
-If the number is specified as a fraction, the actual number of 
-scroll positions is recalculated if the terminal window is resized, 
-so that the actual scroll remains at the specified fraction 
+of the screen, starting with a decimal point: \&.5 is half of the
+screen width, \&.3 is three tenths of the screen width, and so on.
+If the number is specified as a fraction, the actual number of
+scroll positions is recalculated if the terminal window is resized,
+so that the actual scroll remains at the specified fraction
 of the screen width.
 .IP "\-\-follow-name"
-Normally, if the input file is renamed while an F command is executing, 
+Normally, if the input file is renamed while an F command is executing,
 .I less
 will continue to display the contents of the original file despite
 its name change.
@@ -904,7 +915,7 @@ If \-\-follow-name is specified, during an F command
 .I less
 will periodically attempt to reopen the file by name.
 If the reopen succeeds and the file is a different file from the original
-(which means that a new file has been created 
+(which means that a new file has been created
 with the same name as the original (now renamed) file),
 .I less
 will display the contents of that new file.
@@ -930,7 +941,7 @@ For example, +G tells
 .I less
 to start at the end of the file rather than the beginning,
 and +/xyz tells it to start at the first occurrence of "xyz" in the file.
-As a special case, +<number> acts like +<number>g; 
+As a special case, +<number> acts like +<number>g;
 that is, it starts the display at the specified line number
 (however, see the caveat under the "g" command above).
 If the option starts with ++, the initial command applies to
@@ -944,8 +955,8 @@ When entering command line at the bottom of the screen
 or the pattern for a search command),
 certain keys can be used to manipulate the command line.
 Most commands have an alternate form in [ brackets ] which can be used if
-a key does not exist on a particular keyboard. 
-(Note that the forms beginning with ESC do not work 
+a key does not exist on a particular keyboard.
+(Note that the forms beginning with ESC do not work
 in some MS-DOS and Windows systems because ESC is the line erase character.)
 Any of these special keys may be entered literally by preceding
 it with the "literal" character, either ^V or ^A.
@@ -990,7 +1001,7 @@ is entered into the command line.
 Repeated TABs will cycle thru the other matching filenames.
 If the completed filename is a directory, a "/" is appended to the filename.
 (On MS-DOS systems, a "\e" is appended.)
-The environment variable LESSSEPARATOR can be used to specify a 
+The environment variable LESSSEPARATOR can be used to specify a
 different character to append to a directory name.
 .IP "BACKTAB [ ESC-TAB ]"
 Like, TAB, but cycles in the reverse direction thru the matching filenames.
@@ -1007,9 +1018,9 @@ other than ^U, that character is used instead of ^U.
 Delete the entire command line and return to the main prompt.
 
 .SH "KEY BINDINGS"
-You may define your own 
+You may define your own
 .I less
-commands by using the program 
+commands by using the program
 .I lesskey
 (1)
 to create a lesskey file.
@@ -1022,7 +1033,7 @@ and to set environment variables.
 If the environment variable LESSKEY is set,
 .I less
 uses that as the name of the lesskey file.
-Otherwise, 
+Otherwise,
 .I less
 looks in a standard place for the lesskey file:
 On Unix systems,
@@ -1046,24 +1057,24 @@ manual page for more details.
 .P
 A system-wide lesskey file may also be set up to provide key bindings.
 If a key is defined in both a local lesskey file and in the
-system-wide file, key bindings in the local file take precedence over 
+system-wide file, key bindings in the local file take precedence over
 those in the system-wide file.
 If the environment variable LESSKEY_SYSTEM is set,
 .I less
 uses that as the name of the system-wide lesskey file.
 Otherwise,
-.I less 
+.I less
 looks in a standard place for the system-wide lesskey file:
 On Unix systems, the system-wide lesskey file is /usr/local/etc/sysless.
-(However, if 
-.I less 
+(However, if
+.I less
 was built with a different sysconf directory than /usr/local/etc,
 that directory is where the sysless file is found.)
 On MS-DOS and Windows systems, the system-wide lesskey file is c:\e_sysless.
 On OS/2 systems, the system-wide lesskey file is c:\esysless.ini.
 
 .SH "INPUT PREPROCESSOR"
-You may define an "input preprocessor" for 
+You may define an "input preprocessor" for
 .I less.
 Before
 .I less
@@ -1072,10 +1083,10 @@ way the contents of the file are displayed.
 An input preprocessor is simply an executable program (or shell script),
 which writes the contents of the file to a different file,
 called the replacement file.
-The contents of the replacement file are then displayed 
+The contents of the replacement file are then displayed
 in place of the contents of the original file.
 However, it will appear to the user as if the original file is opened;
-that is, 
+that is,
 .I less
 will display the original filename as the name of the current file.
 .PP
@@ -1083,17 +1094,17 @@ An input preprocessor receives one command line argument, the original filename,
 as entered by the user.
 It should create the replacement file, and when finished,
 print the name of the replacement file to its standard output.
-If the input preprocessor does not output a replacement filename, 
+If the input preprocessor does not output a replacement filename,
 .I less
 uses the original file, as normal.
 The input preprocessor is not called when viewing standard input.
 To set up an input preprocessor, set the LESSOPEN environment variable
 to a command line which will invoke your input preprocessor.
-This command line should include one occurrence of the string "%s", 
+This command line should include one occurrence of the string "%s",
 which will be replaced by the filename
 when the input preprocessor command is invoked.
 .PP
-When 
+When
 .I less
 closes a file opened in such a way, it will call another program,
 called the input postprocessor,
@@ -1101,11 +1112,11 @@ which may perform any desired clean-up action (such as deleting the
 replacement file created by LESSOPEN).
 This program receives two command line arguments, the original filename
 as entered by the user, and the name of the replacement file.
-To set up an input postprocessor, set the LESSCLOSE environment variable 
+To set up an input postprocessor, set the LESSCLOSE environment variable
 to a command line which will invoke your input postprocessor.
-It may include two occurrences of the string "%s"; 
-the first is replaced with the original name of the file and 
-the second with the name of the replacement file, 
+It may include two occurrences of the string "%s";
+the first is replaced with the original name of the file and
+the second with the name of the replacement file,
 which was output by LESSOPEN.
 .PP
 For example, on many Unix systems, these two scripts will allow you
@@ -1119,9 +1130,9 @@ lessopen.sh:
 .br
 	case "$1" in
 .br
-	*.Z)	uncompress -\c $1  >/tmp/less.$$  2>/dev/null
+	*.Z)	uncompress \-c $1  >/tmp/less.$$  2>/dev/null
 .br
-		if [ \-s /tmp/less.$$ ]; then 
+		if [ \-s /tmp/less.$$ ]; then
 .br
 			echo /tmp/less.$$
 .br
@@ -1148,21 +1159,21 @@ More complex LESSOPEN and LESSCLOSE scripts may be written
 to accept other types of compressed files, and so on.
 .PP
 It is also possible to set up an input preprocessor to
-pipe the file data directly to 
+pipe the file data directly to
 .I less,
 rather than putting the data into a replacement file.
-This avoids the need to decompress the entire file before 
+This avoids the need to decompress the entire file before
 starting to view it.
 An input preprocessor that works this way is called an input pipe.
 An input pipe, instead of writing the name of a replacement file on
 its standard output,
 writes the entire contents of the replacement file on its standard output.
 If the input pipe does not write any characters on its standard output,
-then there is no replacement file and 
+then there is no replacement file and
 .I less
 uses the original file, as normal.
 To use an input pipe,
-make the first character in the LESSOPEN environment variable a 
+make the first character in the LESSOPEN environment variable a
 vertical bar (|) to signify that the input preprocessor is an input pipe.
 .PP
 For example, on many Unix systems, this script will work like the
@@ -1189,11 +1200,11 @@ To use this script, put it where it can be executed and set
 LESSOPEN="|lesspipe.sh %s".
 .PP
 Note that a preprocessor cannot output an empty file, since that
-is interpreted as meaning there is no replacement, and 
+is interpreted as meaning there is no replacement, and
 the original file is used.
 To avoid this, if LESSOPEN starts with two vertical bars,
 the exit status of the script becomes meaningful.
-If the exit status is zero, the output is considered to be 
+If the exit status is zero, the output is considered to be
 replacement text, even if it empty.
 If the exit status is nonzero, any output is ignored and the
 original file is used.
@@ -1212,17 +1223,17 @@ For compatibility with previous versions of
 .I less,
 the input preprocessor or pipe is not used if
 .I less
-is viewing standard input.  
+is viewing standard input.
 However, if the first character of LESSOPEN is a dash (\-),
 the input preprocessor is used on standard input as well as other files.
-In this case, the dash is not considered to be part of 
+In this case, the dash is not considered to be part of
 the preprocessor command.
 If standard input is being viewed, the input preprocessor is passed
 a file name consisting of a single dash.
 Similarly, if the first two characters of LESSOPEN are vertical bar and dash
-(|\-) or two vertical bars and a dash (||\-), 
+(|\-) or two vertical bars and a dash (||\-),
 the input pipe is used on standard input as well as other files.
-Again, in this case the dash is not considered to be part of 
+Again, in this case the dash is not considered to be part of
 the input pipe command.
 
 .SH "NATIONAL CHARACTER SETS"
@@ -1282,11 +1293,11 @@ one character in the character set.
 The character "." is used for a normal character, "c" for control,
 and "b" for binary.
 A decimal number may be used for repetition.
-For example, "bccc4b." would mean character 0 is binary,
+For example, "bccc4b.\&" would mean character 0 is binary,
 1, 2 and 3 are control, 4, 5, 6 and 7 are binary, and 8 is normal.
 All characters after the last are taken to be the same as the last,
 so characters 9 through 255 would be normal.
-(This is an example, and does not necessarily 
+(This is an example, and does not necessarily
 represent any real character set.)
 .PP
 This table shows the value of LESSCHARDEF which is equivalent
@@ -1313,7 +1324,7 @@ to each of the possible values for LESSCHARSET:
 	next\ \ 	8bcccbcc18b95.bb125.bb
 .PP
 If neither LESSCHARSET nor LESSCHARDEF is set,
-but any of the strings "UTF-8", "UTF8", "utf-8" or "utf8" 
+but any of the strings "UTF-8", "UTF8", "utf-8" or "utf8"
 is found in the LC_ALL, LC_CTYPE or LANG
 environment variables, then the default character set is utf-8.
 .PP
@@ -1331,12 +1342,12 @@ interface is also not available, the default character set is latin1.
 .PP
 Control and binary characters are displayed in standout (reverse video).
 Each such character is displayed in caret notation if possible
-(e.g. ^A for control-A).  Caret notation is used only if 
+(e.g.\& ^A for control-A).  Caret notation is used only if
 inverting the 0100 bit results in a normal printable character.
 Otherwise, the character is displayed as a hex number in angle brackets.
-This format can be changed by 
+This format can be changed by
 setting the LESSBINFMT environment variable.
-LESSBINFMT may begin with a "*" and one character to select 
+LESSBINFMT may begin with a "*" and one character to select
 the display attribute:
 "*k" is blinking, "*d" is bold, "*u" is underlined, "*s" is standout,
 and "*n" is normal.
@@ -1354,12 +1365,12 @@ acts similarly to LESSBINFMT but it applies to Unicode code points
 that were successfully decoded but are unsuitable for display (e.g.,
 unassigned code points).
 Its default value is "<U+%04lX>".
-Note that LESSUTFBINFMT and LESSBINFMT share their display attribute 
-setting ("*x") so specifying one will affect both; 
+Note that LESSUTFBINFMT and LESSBINFMT share their display attribute
+setting ("*x") so specifying one will affect both;
 LESSUTFBINFMT is read after LESSBINFMT so its setting, if any,
-will have priority. 
+will have priority.
 Problematic octets in a UTF-8 file (octets of a truncated sequence,
-octets of a complete but non-shortest form sequence, illegal octets, 
+octets of a complete but non-shortest form sequence, illegal octets,
 and stray trailing octets)
 are displayed individually using LESSBINFMT so as to facilitate diagnostic
 of how the UTF-8 file is ill-formed.
@@ -1424,6 +1435,9 @@ Same as %B.
 .IP "%t"
 Causes any trailing spaces to be removed.
 Usually used at the end of the string, but may appear anywhere.
+.IP "%T"
+Normally expands to the word "file".
+However if viewing files via a tags list using the \-t option, it expands to the word "tag".
 .IP "%x"
 Replaced by the name of the next input file in the list.
 .PP
@@ -1490,7 +1504,7 @@ Some examples:
 This prompt prints the filename, if known;
 otherwise the string "Standard input".
 .sp
-?f%f .?ltLine %lt:?pt%pt\e%:?btByte %bt:-...
+?f%f \&.?ltLine %lt:?pt%pt\e%:?btByte %bt:-...
 .sp
 This prompt would print the filename, if known.
 The filename is followed by the line number, if known,
@@ -1500,7 +1514,7 @@ Notice how each question mark has a matching period,
 and how the % after the %pt
 is included literally by escaping it with a backslash.
 .sp
-?n?f%f\ .?m(file\ %i\ of\ %m)\ ..?e(END)\ ?x-\ Next\e:\ %x..%t
+?n?f%f\ .?m(%T %i of %m)\ ..?e(END)\ ?x-\ Next\e:\ %x..%t";
 .sp
 This prints the filename if this is the first prompt in a file,
 followed by the "file N of N" message if there is more
@@ -1514,17 +1528,17 @@ the other two prompts (\-m and \-M respectively).
 Each is broken into two lines here for readability only.
 .nf
 .sp
-?n?f%f\ .?m(file\ %i\ of\ %m)\ ..?e(END)\ ?x-\ Next\e:\ %x.:
+?n?f%f\ .?m(%T\ %i\ of\ %m)\ ..?e(END)\ ?x-\ Next\e:\ %x.:
 	?pB%pB\e%:byte\ %bB?s/%s...%t
 .sp
-?f%f\ .?n?m(file\ %i\ of\ %m)\ ..?ltlines\ %lt-%lb?L/%L.\ :
+?f%f\ .?n?m(%T\ %i\ of\ %m)\ ..?ltlines\ %lt-%lb?L/%L.\ :
 	byte\ %bB?s/%s.\ .?e(END)\ ?x-\ Next\e:\ %x.:?pB%pB\e%..%t
 .sp
 .fi
 And here is the default message produced by the = command:
 .nf
 .sp
-?f%f\ .?m(file\ %i\ of\ %m)\ .?ltlines\ %lt-%lb?L/%L.\ .
+?f%f\ .?m(%T\ %i\ of\ %m)\ .?ltlines\ %lt-%lb?L/%L.\ .
 	byte\ %bB?s/%s.\ ?e(END)\ :?pB%pB\e%..%t
 .fi
 .PP
@@ -1541,7 +1555,7 @@ The default value for LESSEDIT is:
 Note that this expands to the editor name, followed by a + and the
 line number, followed by the file name.
 If your editor does not accept the "+linenumber" syntax, or has other
-differences in invocation syntax, the LESSEDIT variable can be 
+differences in invocation syntax, the LESSEDIT variable can be
 changed to modify this default.
 
 .SH SECURITY
@@ -1580,12 +1594,12 @@ behaves (mostly) in conformance with the POSIX "more" command specification.
 In this mode, less behaves differently in these ways:
 .PP
 The \-e option works differently.
-If the \-e option is not set, 
+If the \-e option is not set,
 .I less
-behaves as if the \-E option were set.
-If the \-e option is set, 
+behaves as if the \-e option were set.
+If the \-e option is set,
 .I less
-behaves as if the \-e and \-F options were set.
+behaves as if the \-E option were set.
 .PP
 The \-m option works differently.
 If the \-m option is not set, the medium prompt is used,
@@ -1595,7 +1609,7 @@ If the \-m option is set, the short prompt is used.
 The \-n option acts like the \-z option.
 The normal behavior of the \-n option is unavailable in this mode.
 .PP
-The parameter to the \-p option is taken to be a 
+The parameter to the \-p option is taken to be a
 .I less
 command rather than a search pattern.
 .PP
@@ -1604,10 +1618,10 @@ and the MORE environment variable is used in its place.
 
 .SH "ENVIRONMENT VARIABLES"
 Environment variables may be specified either in the system environment
-as usual, or in a 
+as usual, or in a
 .I lesskey
 (1) file.
-If environment variables are defined in more than one place, 
+If environment variables are defined in more than one place,
 variables defined in a local lesskey file take precedence over
 variables defined in the system environment, which take precedence
 over variables defined in the system-wide lesskey file.
@@ -1633,7 +1647,7 @@ Language for determining the character set.
 .IP LC_CTYPE
 Language for determining the character set.
 .IP LESS
-Options which are passed to 
+Options which are passed to
 .I less
 automatically.
 .IP LESSANSIENDCHARS
@@ -1642,7 +1656,7 @@ Characters which may end an ANSI color escape sequence
 .IP LESSANSIMIDCHARS
 Characters which may appear between the ESC character and the
 end character in an ANSI color escape sequence
-(default "0123456789;[?!"'#%()*+\ ".
+(default "0123456789:;[?!"'#%()*+\ ".
 .IP LESSBINFMT
 Format for displaying non-printable, non-control characters.
 .IP LESSCHARDEF
@@ -1665,11 +1679,11 @@ Normally should be set to "global" if your system has the
 (1) command.  If not set, global tags are not used.
 .IP LESSHISTFILE
 Name of the history file used to remember search commands and
-shell commands between invocations of 
+shell commands between invocations of
 .I less.
 If set to "\-" or "/dev/null", a history file is not used.
 The default is "$HOME/.lesshst" on Unix systems, "$HOME/_lesshst" on
-DOS and Windows systems, or "$HOME/lesshst.ini" or "$INIT/lesshst.ini" 
+DOS and Windows systems, or "$HOME/lesshst.ini" or "$INIT/lesshst.ini"
 on OS/2 systems.
 .IP LESSHISTSIZE
 The maximum number of commands to save in the history file.
@@ -1695,7 +1709,7 @@ String to be appended to a directory name in filename completion.
 .IP LESSUTFBINFMT
 Format for displaying non-printable Unicode code points.
 .IP LESS_IS_MORE
-Emulate the 
+Emulate the
 .I more
 (1) command.
 .IP LINES
@@ -1707,11 +1721,11 @@ LINES and COLUMNS environment variables.)
 .IP MORE
 Options which are passed to
 .I less
-automatically when running in 
+automatically when running in
 .I more
 compatible mode.
 .IP PATH
-User's search path (used to find a lesskey file 
+User's search path (used to find a lesskey file
 on MS-DOS and OS/2 systems).
 .IP SHELL
 The shell used to execute the ! command, as well as to expand filenames.
@@ -1726,7 +1740,7 @@ The name of the editor (used for the v command).
 lesskey(1)
 
 .SH COPYRIGHT
-Copyright (C) 1984-2012  Mark Nudelman
+Copyright (C) 1984-2015  Mark Nudelman
 .PP
 less is part of the GNU project and is free software.
 You can redistribute it and/or modify it
@@ -1735,7 +1749,7 @@ under the terms of either
 the Free Software Foundation; or (2) the Less License.
 See the file README in the less distribution for more details
 regarding redistribution.
-You should have received a copy of the GNU General Public License 
+You should have received a copy of the GNU General Public License
 along with the source for less; see the file COPYING.
 If not, write to the Free Software Foundation, 59 Temple Place,
 Suite 330, Boston, MA  02111-1307, USA.
@@ -1749,12 +1763,12 @@ See the GNU General Public License for more details.
 
 .SH AUTHOR
 .PP
-Mark Nudelman 
+Mark Nudelman
 .br
 Send bug reports or comments to <bug-less@gnu.org>
 .br
 See http://www.greenwoodsoftware.com/less/bugs.html for the latest list of known bugs in less.
 .br
-For more information, see the less homepage at 
+For more information, see the less homepage at
 .br
 http://www.greenwoodsoftware.com/less.
diff --git a/contrib/less/lessecho.c b/contrib/less/lessecho.c
index 7098f2d..fb0b22d 100644
--- a/contrib/less/lessecho.c
+++ b/contrib/less/lessecho.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
diff --git a/contrib/less/lessecho.nro b/contrib/less/lessecho.nro
index d7fb390..78b893f 100644
--- a/contrib/less/lessecho.nro
+++ b/contrib/less/lessecho.nro
@@ -1,4 +1,4 @@
-.TH LESSECHO 1 "Version 458: 04 Apr 2013"
+.TH LESSECHO 1 "Version 481: 31 Aug 2015"
 .SH NAME
 lessecho \- expand metacharacters
 .SH SYNOPSIS
diff --git a/contrib/less/lesskey.c b/contrib/less/lesskey.c
index 3d7571e..298748b 100644
--- a/contrib/less/lesskey.c
+++ b/contrib/less/lesskey.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
@@ -120,6 +120,7 @@ struct cmdname cmdnames[] =
 	{ "forw-search",          A_F_SEARCH },
 	{ "forw-window",          A_F_WINDOW },
 	{ "goto-end",             A_GOEND },
+	{ "goto-end-buffered",    A_GOEND_BUF },
 	{ "goto-line",            A_GOLINE },
 	{ "goto-mark",            A_GOMARK },
 	{ "help",                 A_HELP },
@@ -647,7 +648,7 @@ parse_cmdline(p)
 	do
 	{
 		s = tstr(&p, 1);
-		cmdlen += strlen(s);
+		cmdlen += (int) strlen(s);
 		if (cmdlen > MAX_CMDLEN)
 			error("command too long");
 		else
diff --git a/contrib/less/lesskey.h b/contrib/less/lesskey.h
index 91098a5..34b8c17 100644
--- a/contrib/less/lesskey.h
+++ b/contrib/less/lesskey.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
diff --git a/contrib/less/lesskey.nro b/contrib/less/lesskey.nro
index 2bbd887..826332d 100644
--- a/contrib/less/lesskey.nro
+++ b/contrib/less/lesskey.nro
@@ -1,4 +1,4 @@
-.TH LESSKEY 1 "Version 458: 04 Apr 2013"
+.TH LESSKEY 1 "Version 481: 31 Aug 2015"
 .SH NAME
 lesskey \- specify key bindings for less
 .SH SYNOPSIS
@@ -178,6 +178,8 @@ default command keys used by less:
 	\ee]		right-scroll
 	\ee(		left-scroll
 	\ee)		right-scroll
+	\ekl		left-scroll
+	\ekr		right-scroll
 	{		forw-bracket {}
 	}		back-bracket {}
 	(		forw-bracket ()
@@ -190,6 +192,7 @@ default command keys used by less:
 	\ee>		goto-end 
 	>		goto-end 
 	\eke	goto-end
+	\eeG		goto-end-buffered
 	=		status 
 	^G		status 
 	:f		status 
@@ -356,26 +359,29 @@ which start with a NUL character (0).
 This NUL character should be represented as \e340 in a lesskey file.
 
 .SH COPYRIGHT
-Copyright (C) 2000-2012  Mark Nudelman
+Copyright (C) 1984-2015  Mark Nudelman
 .PP
-lesskey is part of the GNU project and is free software;
-you can redistribute it and/or modify it
-under the terms of the GNU General Public License as published by
-the Free Software Foundation;
-either version 2, or (at your option) any later version.
+less is part of the GNU project and is free software.
+You can redistribute it and/or modify it
+under the terms of either
+(1) the GNU General Public License as published by
+the Free Software Foundation; or (2) the Less License.
+See the file README in the less distribution for more details
+regarding redistribution.
+You should have received a copy of the GNU General Public License
+along with the source for less; see the file COPYING.
+If not, write to the Free Software Foundation, 59 Temple Place,
+Suite 330, Boston, MA  02111-1307, USA.
+You should also have received a copy of the Less License;
+see the file LICENSE.
 .PP
-lesskey is distributed in the hope that it will be useful, but
+less is distributed in the hope that it will be useful, but
 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 or FITNESS FOR A PARTICULAR PURPOSE.
 See the GNU General Public License for more details.
-.PP
-You should have received a copy of the GNU General Public License 
-along with lesskey; see the file COPYING.
-If not, write to the Free Software Foundation, 59 Temple Place,
-Suite 330, Boston, MA  02111-1307, USA.
 
 .SH AUTHOR
 .PP
-Mark Nudelman <bug-less@gnu.org>
+Mark Nudelman
 .br
-Send bug reports or comments to bug-less@gnu.org.
+Send bug reports or comments to <bug-less@gnu.org>.
diff --git a/contrib/less/lglob.h b/contrib/less/lglob.h
index b08d24c..87b5fb4 100644
--- a/contrib/less/lglob.h
+++ b/contrib/less/lglob.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
diff --git a/contrib/less/line.c b/contrib/less/line.c
index 1eb3914..e54835d 100644
--- a/contrib/less/line.c
+++ b/contrib/less/line.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
@@ -35,7 +35,7 @@ static int overstrike;		/* Next char should overstrike previous char */
 static int last_overstrike = AT_NORMAL;
 static int is_null_line;	/* There is no current line */
 static int lmargin;		/* Left margin */
-static char pendc;
+static LWCHAR pendc;
 static POSITION pendpos;
 static char *end_ansi_chars;
 static char *mid_ansi_chars;
@@ -78,7 +78,7 @@ init_line()
 
 	mid_ansi_chars = lgetenv("LESSANSIMIDCHARS");
 	if (mid_ansi_chars == NULL || *mid_ansi_chars == '\0')
-		mid_ansi_chars = "0123456789;[?!\"'#%()*+ ";
+		mid_ansi_chars = "0123456789:;[?!\"'#%()*+ ";
 
 	linebuf = (char *) ecalloc(LINEBUF_SIZE, sizeof(char));
 	attr = (char *) ecalloc(LINEBUF_SIZE, sizeof(char));
@@ -209,7 +209,7 @@ plinenum(pos)
 		int n;
 
 		linenumtoa(linenum, buf);
-		n = strlen(buf);
+		n = (int) strlen(buf);
 		if (n < MIN_LINENUM_WIDTH)
 			n = MIN_LINENUM_WIDTH;
 		sprintf(linebuf+curr, "%*s ", n, buf);
@@ -491,7 +491,7 @@ backc()
 	       && column > lmargin
 	       && (!(attr[curr - 1] & (AT_ANSI|AT_BINARY))))
 	{
-		curr = p - linebuf;
+		curr = (int) (p - linebuf);
 		prev_ch = step_char(&p, -1, linebuf + lmargin);
 		width = pwidth(ch, attr[curr], prev_ch);
 		column -= width;
@@ -604,7 +604,7 @@ store_char(ch, a, rep, pos)
 			do {
 				bch = step_char(&p, -1, linebuf);
 			} while (p > linebuf && !IS_CSI_START(bch));
-			curr = p - linebuf;
+			curr = (int) (p - linebuf);
 			return 0;
 		}
 		a = AT_ANSI;	/* Will force re-AT_'ing around it.  */
@@ -697,7 +697,7 @@ store_tab(attr, pos)
 
 	static int
 store_prchar(c, pos)
-	char c;
+	LWCHAR c;
 	POSITION pos;
 {
 	char *s;
@@ -741,13 +741,15 @@ flush_mbc_buf(pos)
  */
 	public int
 pappend(c, pos)
-	char c;
+	unsigned char c;
 	POSITION pos;
 {
 	int r;
 
 	if (pendc)
 	{
+		if (c == '\r' && pendc == '\r')
+			return (0);
 		if (do_append(pendc, NULL, pendpos))
 			/*
 			 * Oops.  We've probably lost the char which
@@ -781,7 +783,7 @@ pappend(c, pos)
 
 	if (!utf_mode)
 	{
-		r = do_append((LWCHAR) c, NULL, pos);
+		r = do_append(c, NULL, pos);
 	} else
 	{
 		/* Perform strict validation in all possible cases. */
@@ -791,7 +793,7 @@ pappend(c, pos)
 			mbc_buf_index = 1;
 			*mbc_buf = c;
 			if (IS_ASCII_OCTET(c))
-				r = do_append((LWCHAR) c, NULL, pos);
+				r = do_append(c, NULL, pos);
 			else if (IS_UTF8_LEAD(c))
 			{
 				mbc_buf_len = utf_len(c);
@@ -805,7 +807,7 @@ pappend(c, pos)
 			mbc_buf[mbc_buf_index++] = c;
 			if (mbc_buf_index < mbc_buf_len)
 				return (0);
-			if (is_utf8_well_formed(mbc_buf))
+			if (is_utf8_well_formed(mbc_buf, mbc_buf_index))
 				r = do_append(get_wchar(mbc_buf), mbc_buf, mbc_pos);
 			else
 				/* Complete, but not shortest form, sequence. */
@@ -885,8 +887,14 @@ do_append(ch, rep, pos)
 		 * or just deletion of the character in the buffer.
 		 */
 		overstrike = utf_mode ? -1 : 0;
-		/* To be correct, this must be a base character.  */
-		prev_ch = get_wchar(linebuf + curr);
+		if (utf_mode)
+		{
+			/* To be correct, this must be a base character.  */
+			prev_ch = get_wchar(linebuf + curr);
+		} else
+		{
+			prev_ch = (unsigned char) linebuf[curr];
+		}
 		a = attr[curr];
 		if (ch == prev_ch)
 		{
diff --git a/contrib/less/linenum.c b/contrib/less/linenum.c
index 4f45be8..6d078ec 100644
--- a/contrib/less/linenum.c
+++ b/contrib/less/linenum.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
@@ -216,7 +216,7 @@ longloopmessage()
 
 static int loopcount;
 #if HAVE_TIME
-static long startime;
+static time_type startime;
 #endif
 
 	static void
diff --git a/contrib/less/lsystem.c b/contrib/less/lsystem.c
index 674e5a2..8a7cb8f 100644
--- a/contrib/less/lsystem.c
+++ b/contrib/less/lsystem.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
@@ -137,7 +137,7 @@ lsystem(cmd, donemsg)
 			char *esccmd = shell_quote(cmd);
 			if (esccmd != NULL)
 			{
-				int len = strlen(shell) + strlen(esccmd) + 5;
+				int len = (int) (strlen(shell) + strlen(esccmd) + 5);
 				p = (char *) ecalloc(len, sizeof(char));
 				SNPRINTF3(p, len, "%s %s %s", shell, shell_coption(), esccmd);
 				free(esccmd);
diff --git a/contrib/less/main.c b/contrib/less/main.c
index 4a66147..6cfd34d 100644
--- a/contrib/less/main.c
+++ b/contrib/less/main.c
@@ -1,6 +1,6 @@
 /* $FreeBSD$ */
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
@@ -57,7 +57,6 @@ static char consoleTitle[256];
 extern int	less_is_more;
 extern int	missing_cap;
 extern int	know_dumb;
-extern int	quit_if_one_screen;
 extern int	no_init;
 extern int	pr_type;
 
@@ -167,8 +166,6 @@ main(argc, argv)
 
 	if (less_is_more)
 		no_init = TRUE;
-	if (less_is_more && get_quit_at_eof())
-		quit_if_one_screen = TRUE;
 
 #if EDITOR
 	editor = lgetenv("VISUAL");
diff --git a/contrib/less/mark.c b/contrib/less/mark.c
index c61ce03..44d606f 100644
--- a/contrib/less/mark.c
+++ b/contrib/less/mark.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
@@ -15,14 +15,6 @@ extern int sc_height;
 extern int jump_sline;
 
 /*
- * A mark is an ifile (input file) plus a position within the file.
- */
-struct mark {
-	IFILE m_ifile;
-	struct scrpos m_scrpos;
-};
-
-/*
  * The table of marks.
  * Each mark is identified by a lowercase or uppercase letter.
  * The final one is lmark, for the "last mark"; addressed by the apostrophe.
diff --git a/contrib/less/mkhelp.c b/contrib/less/mkhelp.c
index 45530fd..d4e4063 100644
--- a/contrib/less/mkhelp.c
+++ b/contrib/less/mkhelp.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
diff --git a/contrib/less/mkutable b/contrib/less/mkutable
new file mode 100755
index 0000000..803335b
--- /dev/null
+++ b/contrib/less/mkutable
@@ -0,0 +1,75 @@
+#! /usr/bin/perl
+use strict;
+
+my $USAGE = <<__EOF__;
+   usage: mkutable [-n] [-f#] type... [--] [<] UnicodeData.txt
+          -n = take non-matching types
+	  -f = zero-based type field (default 2)
+__EOF__
+
+use vars qw( $opt_f $opt_n );
+use Getopt::Std;
+my $type_field = 2;
+
+exit (main() ? 1 : 0);
+
+sub main {
+    my $date = `date`;
+    chomp $date;
+    my $args = join ' ', @ARGV;
+    my $header = "/* Generated by \"$0 $args\" on $date */\n";
+
+    die $USAGE if not getopts('f:n');
+    $type_field = $opt_f if $opt_f;
+    my %types;
+    my $arg;
+    while ($arg = shift @ARGV) {
+        last if $arg eq '--';
+        $types{$arg} = 1;
+    }
+    my %out = ( 'types' => \%types );
+    my $last_code = 0;
+
+    print $header;
+    while (<>) {
+        chomp;
+        s/#.*//;
+        my @fields = split /;/;
+        next if not @fields;
+        my $code = hex $fields[0];
+        my $type = $fields[$type_field];
+        $type =~ s/\s//g;
+        while (++$last_code < $code) {
+            output(\%out, $last_code, '?');
+        }
+        output(\%out, $code, $type);
+    }
+    output(\%out, $last_code+1, '?');
+}
+
+sub output {
+    my ($out, $code, $type) = @_;
+    my $match = ${${$out}{types}}{$type};
+    my $type_change = (not $$out{start_type} or $type ne $$out{start_type});
+    $match = not $match if $opt_n;
+    if ($match and (not $$out{in_run} or $type_change)) {
+        end_run($out, $code-1);
+        start_run($out, $code, $type);
+    } elsif (not $match and $$out{in_run}) {
+        end_run($out, $code-1);
+    }
+}
+
+sub start_run {
+    my ($out, $code, $type) = @_;
+    $$out{start_code} = $code;
+    $$out{start_type} = $type;
+    $$out{in_run} = 1;
+}
+
+sub end_run {
+    my ($out, $code) = @_;
+    return if not $$out{in_run};
+    printf "\t{ 0x%04x, 0x%04x }, /* %s */\n", $$out{start_code}, $code, $$out{start_type};
+    $$out{in_run} = 0;
+}
diff --git a/contrib/less/optfunc.c b/contrib/less/optfunc.c
index e3cd57f..c3bb6b2 100644
--- a/contrib/less/optfunc.c
+++ b/contrib/less/optfunc.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
@@ -43,6 +43,7 @@ extern char *prproto[];
 extern char *eqproto;
 extern char *hproto;
 extern char *wproto;
+extern char *every_first_cmd;
 extern IFILE curr_ifile;
 extern char version[];
 extern int jump_sline;
@@ -58,6 +59,7 @@ extern int logfile;
 #if TAGS
 public char *tagoption = NULL;
 extern char *tags;
+extern char ztags[];
 #endif
 #if MSDOS_COMPILER
 extern int nm_fg_color, nm_bg_color;
@@ -87,7 +89,7 @@ opt_o(type, s)
 	switch (type)
 	{
 	case INIT:
-		namelogfile = s;
+		namelogfile = save(s);
 		break;
 	case TOGGLE:
 		if (ch_getflags() & CH_CANSEEK)
@@ -101,6 +103,8 @@ opt_o(type, s)
 			return;
 		}
 		s = skipsp(s);
+		if (namelogfile != NULL)
+			free(namelogfile);
 		namelogfile = lglob(s);
 		use_logfile(namelogfile);
 		sync_logfile();
@@ -176,7 +180,7 @@ opt_j(type, s)
 		{
 
 			sprintf(buf, ".%06d", jump_sline_fraction);
-			len = strlen(buf);
+			len = (int) strlen(buf);
 			while (len > 2 && buf[len-1] == '0')
 				len--;
 			buf[len] = '\0';
@@ -241,7 +245,7 @@ opt_shift(type, s)
 		{
 
 			sprintf(buf, ".%06d", shift_count_fraction);
-			len = strlen(buf);
+			len = (int) strlen(buf);
 			while (len > 2 && buf[len-1] == '0')
 				len--;
 			buf[len] = '\0';
@@ -295,7 +299,7 @@ opt_t(type, s)
 	switch (type)
 	{
 	case INIT:
-		tagoption = s;
+		tagoption = save(s);
 		/* Do the rest in main() */
 		break;
 	case TOGGLE:
@@ -335,10 +339,12 @@ opt__T(type, s)
 	switch (type)
 	{
 	case INIT:
-		tags = s;
+		tags = save(s);
 		break;
 	case TOGGLE:
 		s = skipsp(s);
+		if (tags != NULL && tags != ztags)
+			free(tags);
 		tags = lglob(s);
 		break;
 	case QUERY:
@@ -361,18 +367,26 @@ opt_p(type, s)
 	{
 	case INIT:
 		/*
-		 * Unget a search command for the specified string.
-		 * {{ This won't work if the "/" command is
-		 *    changed or invalidated by a .lesskey file. }}
+		 * Unget a command for the specified string.
 		 */
-		plusoption = TRUE;
-		ungetsc(s);
-		/*
-		 * In "more" mode, the -p argument is a command,
-		 * not a search string, so we don't need a slash.
-		 */
-		if (!less_is_more)
+		if (less_is_more)
+		{
+			/*
+			 * In "more" mode, the -p argument is a command,
+			 * not a search string, so we don't need a slash.
+			 */
+			every_first_cmd = save(s);
+		} else
+		{
+			plusoption = TRUE;
+			ungetcc(CHAR_END_COMMAND);
+			ungetsc(s);
+			 /*
+			  * {{ This won't work if the "/" command is
+			  *    changed or invalidated by a .lesskey file. }}
+			  */
 			ungetsc("/");
+		}
 		break;
 	}
 }
@@ -503,7 +517,7 @@ opt__V(type, s)
 		putstr("no ");
 #endif
 		putstr("regular expressions)\n");
-		putstr("Copyright (C) 1984-2012 Mark Nudelman\n\n");
+		putstr("Copyright (C) 1984-2015  Mark Nudelman\n\n");
 		putstr("less comes with NO WARRANTY, to the extent permitted by law.\n");
 		putstr("For information about the terms of redistribution,\n");
 		putstr("see the file named README in the less distribution.\n");
diff --git a/contrib/less/option.c b/contrib/less/option.c
index 2c26dc6..256f569 100644
--- a/contrib/less/option.c
+++ b/contrib/less/option.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
@@ -152,7 +152,10 @@ scan_option(s)
 			if (*str == '+')
 				every_first_cmd = save(str+1);
 			else
+			{
+				ungetcc(CHAR_END_COMMAND);
 				ungetsc(str);
+			}
 			free(str);
 			continue;
 		case '0':  case '1':  case '2':  case '3':  case '4':
@@ -701,5 +704,5 @@ get_quit_at_eof()
 	if (!less_is_more)
 		return quit_at_eof;
 	/* When less_is_more is set, the -e flag semantics are different. */
-	return quit_at_eof ? OPT_ON : OPT_ONPLUS;
+	return quit_at_eof ? OPT_ONPLUS : OPT_ON;
 }
diff --git a/contrib/less/option.h b/contrib/less/option.h
index c11ad3b..dc97d75f 100644
--- a/contrib/less/option.h
+++ b/contrib/less/option.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
diff --git a/contrib/less/opttbl.c b/contrib/less/opttbl.c
index 6f582bf..b896391 100644
--- a/contrib/less/opttbl.c
+++ b/contrib/less/opttbl.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
diff --git a/contrib/less/os.c b/contrib/less/os.c
index eb75bba..530abe1 100644
--- a/contrib/less/os.c
+++ b/contrib/less/os.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
@@ -33,12 +33,6 @@
 #include <values.h>
 #endif
 
-#if HAVE_TIME_T
-#define time_type	time_t
-#else
-#define	time_type	long
-#endif
-
 /*
  * BSD setjmp() saves (and longjmp() restores) the signal mask.
  * This costs a system call or two per setjmp(), so if possible we clear the
@@ -191,7 +185,7 @@ intread()
  * Return the current time.
  */
 #if HAVE_TIME
-	public long
+	public time_type
 get_time()
 {
 	time_type t;
@@ -243,7 +237,7 @@ errno_message(filename)
 #else
 	p = "cannot open";
 #endif
-	len = strlen(filename) + strlen(p) + 3;
+	len = (int) (strlen(filename) + strlen(p) + 3);
 	m = (char *) ecalloc(len, sizeof(char));
 	SNPRINTF2(m, len, "%s: %s", filename, p);
 	return (m);
diff --git a/contrib/less/output.c b/contrib/less/output.c
index e1f2cff..d6cfc38 100644
--- a/contrib/less/output.c
+++ b/contrib/less/output.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
@@ -98,7 +98,7 @@ flush()
 	register int n;
 	register int fd;
 
-	n = ob - obuf;
+	n = (int) (ob - obuf);
 	if (n == 0)
 		return;
 
@@ -197,7 +197,7 @@ flush()
 							 * Leave it unprocessed
 							 * in the buffer.
 							 */
-							int slop = q - anchor;
+							int slop = (int) (q - anchor);
 							/* {{ strcpy args overlap! }} */
 							strcpy(obuf, anchor);
 							ob = &obuf[slop];
@@ -423,7 +423,7 @@ iprint_int(num)
 
 	inttoa(num, buf);
 	putstr(buf);
-	return (strlen(buf));
+	return ((int) strlen(buf));
 }
 
 /*
@@ -437,7 +437,7 @@ iprint_linenum(num)
 
 	linenumtoa(num, buf);
 	putstr(buf);
-	return (strlen(buf));
+	return ((int) strlen(buf));
 }
 
 /*
diff --git a/contrib/less/pattern.c b/contrib/less/pattern.c
index fa26b99..71141c7 100644
--- a/contrib/less/pattern.c
+++ b/contrib/less/pattern.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
@@ -20,10 +20,11 @@ extern int caseless;
  * Compile a search pattern, for future use by match_pattern.
  */
 	static int
-compile_pattern2(pattern, search_type, comp_pattern)
+compile_pattern2(pattern, search_type, comp_pattern, show_error)
 	char *pattern;
 	int search_type;
 	void **comp_pattern;
+	int show_error;
 {
 	if (search_type & SRCH_NO_REGEX)
 		return (0);
@@ -37,7 +38,8 @@ compile_pattern2(pattern, search_type, comp_pattern)
 	if (re_compile_pattern(pattern, strlen(pattern), comp))
 	{
 		free(comp);
-		error("Invalid pattern", NULL_PARG);
+		if (show_error)
+			error("Invalid pattern", NULL_PARG);
 		return (-1);
 	}
 	if (*pcomp != NULL)
@@ -50,7 +52,8 @@ compile_pattern2(pattern, search_type, comp_pattern)
 	if (regcomp(comp, pattern, REGCOMP_FLAG))
 	{
 		free(comp);
-		error("Invalid pattern", NULL_PARG);
+		if (show_error)
+			error("Invalid pattern", NULL_PARG);
 		return (-1);
 	}
 	if (*pcomp != NULL)
@@ -68,7 +71,8 @@ compile_pattern2(pattern, search_type, comp_pattern)
 	if (comp == NULL)
 	{
 		parg.p_string = (char *) errstring;
-		error("%s", &parg);
+		if (show_error)
+			error("%s", &parg);
 		return (-1);
 	}
 	*pcomp = comp;
@@ -78,7 +82,8 @@ compile_pattern2(pattern, search_type, comp_pattern)
 	int *pcomp = (int *) comp_pattern;
 	if ((parg.p_string = re_comp(pattern)) != NULL)
 	{
-		error("%s", &parg);
+		if (show_error)
+			error("%s", &parg);
 		return (-1);
 	}
 	*pcomp = 1;
@@ -88,7 +93,8 @@ compile_pattern2(pattern, search_type, comp_pattern)
 	char **pcomp = (char **) comp_pattern;
 	if ((comp = regcmp(pattern, 0)) == NULL)
 	{
-		error("Invalid pattern", NULL_PARG);
+		if (show_error)
+			error("Invalid pattern", NULL_PARG);
 		return (-1);
 	}
 	if (pcomp != NULL)
@@ -98,7 +104,10 @@ compile_pattern2(pattern, search_type, comp_pattern)
 #if HAVE_V8_REGCOMP
 	struct regexp *comp;
 	struct regexp **pcomp = (struct regexp **) comp_pattern;
-	if ((comp = regcomp(pattern)) == NULL)
+	reg_show_error = show_error;
+	comp = regcomp(pattern);
+	reg_show_error = 1;
+	if (comp == NULL)
 	{
 		/*
 		 * regcomp has already printed an error message 
@@ -133,7 +142,7 @@ compile_pattern(pattern, search_type, comp_pattern)
 		cvt_pattern = (char*) ecalloc(1, cvt_length(strlen(pattern), CVT_TO_LC));
 		cvt_text(cvt_pattern, pattern, (int *)NULL, (int *)NULL, CVT_TO_LC);
 	}
-	result = compile_pattern2(cvt_pattern, search_type, comp_pattern);
+	result = compile_pattern2(cvt_pattern, search_type, comp_pattern, 1);
 	if (cvt_pattern != pattern)
 		free(cvt_pattern);
 	return (result);
@@ -183,6 +192,24 @@ uncompile_pattern(pattern)
 }
 
 /*
+ * Can a pattern be successfully compiled?
+ */
+	public int
+valid_pattern(pattern)
+	char *pattern;
+{
+	void *comp_pattern;
+	int result;
+
+	CLEAR_PATTERN(comp_pattern);
+	result = compile_pattern2(pattern, 0, &comp_pattern, 0);
+	if (result != 0)
+		return (0);
+	uncompile_pattern(&comp_pattern);
+	return (1);
+}
+
+/*
  * Is a compiled pattern null?
  */
 	public int
@@ -207,6 +234,9 @@ is_null_pattern(pattern)
 #if HAVE_V8_REGCOMP
 	return (pattern == NULL);
 #endif
+#if NO_REGEX
+	return (pattern == NULL);
+#endif
 }
 
 /*
@@ -227,9 +257,17 @@ match(pattern, pattern_len, buf, buf_len, pfound, pend)
 
 	for ( ;  buf < buf_end;  buf++)
 	{
-		for (pp = pattern, lp = buf;  *pp == *lp;  pp++, lp++)
+		for (pp = pattern, lp = buf;  ;  pp++, lp++)
+		{
+			char cp = *pp;
+			char cl = *lp;
+			if (caseless == OPT_ONPLUS && ASCII_IS_UPPER(cp))
+				cp = ASCII_TO_LOWER(cp);
+			if (cp != cl)
+				break;
 			if (pp == pattern_end || lp == buf_end)
 				break;
+		}
 		if (pp == pattern_end)
 		{
 			if (pfound != NULL)
@@ -277,6 +315,7 @@ match_pattern(pattern, tpattern, line, line_len, sp, ep, notbol, search_type)
 	struct regexp *spattern = (struct regexp *) pattern;
 #endif
 
+	*sp = *ep = NULL;
 #if NO_REGEX
 	search_type |= SRCH_NO_REGEX;
 #endif
@@ -287,24 +326,25 @@ match_pattern(pattern, tpattern, line, line_len, sp, ep, notbol, search_type)
 #if HAVE_GNU_REGEX
 	{
 		struct re_registers search_regs;
-		regoff_t *starts = (regoff_t *) ecalloc(1, sizeof (regoff_t));
-		regoff_t *ends = (regoff_t *) ecalloc(1, sizeof (regoff_t));
 		spattern->not_bol = notbol;
-		re_set_registers(spattern, &search_regs, 1, starts, ends);
+		spattern->regs_allocated = REGS_UNALLOCATED;
 		matched = re_search(spattern, line, line_len, 0, line_len, &search_regs) >= 0;
 		if (matched)
 		{
 			*sp = line + search_regs.start[0];
 			*ep = line + search_regs.end[0];
 		}
-		free(starts);
-		free(ends);
 	}
 #endif
 #if HAVE_POSIX_REGCOMP
 	{
 		regmatch_t rm;
 		int flags = (notbol) ? REG_NOTBOL : 0;
+#ifdef REG_STARTEND
+		flags |= REG_STARTEND;
+		rm.rm_so = 0;
+		rm.rm_eo = line_len;
+#endif
 		matched = !regexec(spattern, line, 1, &rm, flags);
 		if (matched)
 		{
diff --git a/contrib/less/pattern.h b/contrib/less/pattern.h
index 0a90d5d..712fdcf 100644
--- a/contrib/less/pattern.h
+++ b/contrib/less/pattern.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
@@ -49,6 +49,7 @@ extern char *__loc1;
 
 #if HAVE_V8_REGCOMP
 #include "regexp.h"
+extern int reg_show_error;
 #define DEFINE_PATTERN(name)  struct regexp *name
 #define CLEAR_PATTERN(name)   name = NULL
 #endif
diff --git a/contrib/less/pckeys.h b/contrib/less/pckeys.h
index b673756..8fb6800 100644
--- a/contrib/less/pckeys.h
+++ b/contrib/less/pckeys.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
diff --git a/contrib/less/position.c b/contrib/less/position.c
index b655f07..dc80fd6 100644
--- a/contrib/less/position.c
+++ b/contrib/less/position.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
diff --git a/contrib/less/position.h b/contrib/less/position.h
index 3b96637..e0e2bff 100644
--- a/contrib/less/position.h
+++ b/contrib/less/position.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
diff --git a/contrib/less/prompt.c b/contrib/less/prompt.c
index f374101..50ced97 100644
--- a/contrib/less/prompt.c
+++ b/contrib/less/prompt.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
@@ -85,9 +85,9 @@ ap_str(s)
 {
 	int len;
 
-	len = strlen(s);
+	len = (int) strlen(s);
 	if (mp + len >= message + PROMPT_SIZE)
-		len = message + PROMPT_SIZE - mp - 1;
+		len = (int) (message + PROMPT_SIZE - mp - 1);
 	strncpy(mp, s, len);
 	mp += len;
 	*mp = '\0';
diff --git a/contrib/less/regexp.c b/contrib/less/regexp.c
index 77ab611..fcf7c9a 100644
--- a/contrib/less/regexp.c
+++ b/contrib/less/regexp.c
@@ -243,7 +243,10 @@ char *exp;
 	regcode = r->program;
 	regc(MAGIC);
 	if (reg(0, &flags) == NULL)
+	{
+		free(r);
 		return(NULL);
+	}
 
 	/* Dig out information for optimizations. */
 	r->regstart = '\0';	/* Worst-case defaults. */
@@ -274,7 +277,7 @@ char *exp;
 			for (; scan != NULL; scan = regnext(scan))
 				if (OP(scan) == EXACTLY && ((int) strlen(OPERAND(scan))) >= len) {
 					longest = OPERAND(scan);
-					len = strlen(OPERAND(scan));
+					len = (int) strlen(OPERAND(scan));
 				}
 			r->regmust = longest;
 			r->regmlen = len;
@@ -554,7 +557,7 @@ int *flagp;
 			register char ender;
 
 			regparse--;
-			len = strcspn(regparse, META);
+			len = (int) strcspn(regparse, META);
 			if (len <= 0)
 				FAIL("internal disaster");
 			ender = *(regparse+len);
@@ -670,9 +673,9 @@ char *val;
 	}
 
 	if (OP(scan) == BACK)
-		offset = scan - val;
+		offset = (int) (scan - val);
 	else
-		offset = val - scan;
+		offset = (int) (val - scan);
 	*(scan+1) = (offset>>8)&0377;
 	*(scan+2) = offset&0377;
 }
@@ -870,7 +873,7 @@ char *prog;
 				/* Inline the first character, for speed. */
 				if (*opnd != *reginput)
 					return(0);
-				len = strlen(opnd);
+				len = (int) strlen(opnd);
 				if (len > 1 && strncmp(opnd, reginput, len) != 0)
 					return(0);
 				reginput += len;
@@ -1034,7 +1037,7 @@ char *p;
 	opnd = OPERAND(p);
 	switch (OP(p)) {
 	case ANY:
-		count = strlen(scan);
+		count = (int) strlen(scan);
 		scan += count;
 		break;
 	case EXACTLY:
diff --git a/contrib/less/screen.c b/contrib/less/screen.c
index a79eba2..8f8a433 100644
--- a/contrib/less/screen.c
+++ b/contrib/less/screen.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
diff --git a/contrib/less/scrsize.c b/contrib/less/scrsize.c
index 9f786fe..91fc03f 100644
--- a/contrib/less/scrsize.c
+++ b/contrib/less/scrsize.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
diff --git a/contrib/less/search.c b/contrib/less/search.c
index 24d4210..e824acb 100644
--- a/contrib/less/search.c
+++ b/contrib/less/search.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
@@ -45,15 +45,57 @@ static POSITION prep_endpos;
 static int is_caseless;
 static int is_ucase_pattern;
 
+/*
+ * Structures for maintaining a set of ranges for hilites and filtered-out
+ * lines. Each range is stored as a node within a red-black tree, and we
+ * try to extend existing ranges (without creating overlaps) rather than
+ * create new nodes if possible. We remember the last node found by a
+ * search for constant-time lookup if the next search is near enough to
+ * the previous. To aid that, we overlay a secondary doubly-linked list
+ * on top of the red-black tree so we can find the preceding/succeeding
+ * nodes also in constant time.
+ *
+ * Each node is allocated from a series of pools, each pool double the size
+ * of the previous (for amortised constant time allocation). Since our only
+ * tree operations are clear and node insertion, not node removal, we don't
+ * need to maintain a usage bitmap or freelist and can just return nodes
+ * from the pool in-order until capacity is reached.
+ */
 struct hilite
 {
-	struct hilite *hl_next;
 	POSITION hl_startpos;
 	POSITION hl_endpos;
 };
-static struct hilite hilite_anchor = { NULL, NULL_POSITION, NULL_POSITION };
-static struct hilite filter_anchor = { NULL, NULL_POSITION, NULL_POSITION };
-#define	hl_first	hl_next
+struct hilite_node
+{
+	struct hilite_node *parent;
+	struct hilite_node *left;
+	struct hilite_node *right;
+	struct hilite_node *prev;
+	struct hilite_node *next;
+	int red;
+	struct hilite r;
+};
+struct hilite_storage
+{
+	int capacity;
+	int used;
+	struct hilite_storage *next;
+	struct hilite_node *nodes;
+};
+struct hilite_tree
+{
+	struct hilite_storage *first;
+	struct hilite_storage *current;
+	struct hilite_node *root;
+	struct hilite_node *lookaside;
+};
+#define HILITE_INITIALIZER() { NULL, NULL, NULL, NULL }
+#define HILITE_LOOKASIDE_STEPS 2
+
+static struct hilite_tree hilite_anchor = HILITE_INITIALIZER();
+static struct hilite_tree filter_anchor = HILITE_INITIALIZER();
+
 #endif
 
 /*
@@ -219,7 +261,6 @@ repaint_hilite(on)
 {
 	int slinenum;
 	POSITION pos;
-	POSITION epos;
 	int save_hide_hilite;
 
 	if (squished)
@@ -245,7 +286,6 @@ repaint_hilite(on)
 		pos = position(slinenum);
 		if (pos == NULL_POSITION)
 			continue;
-		epos = position(slinenum+1);
 		(void) forw_line(pos);
 		goto_line(slinenum);
 		put_line();
@@ -324,17 +364,23 @@ undo_search()
  */
 	public void
 clr_hlist(anchor)
-	struct hilite *anchor;
+	struct hilite_tree *anchor;
 {
-	struct hilite *hl;
-	struct hilite *nexthl;
+	struct hilite_storage *hls;
+	struct hilite_storage *nexthls;
 
-	for (hl = anchor->hl_first;  hl != NULL;  hl = nexthl)
+	for (hls = anchor->first;  hls != NULL;  hls = nexthls)
 	{
-		nexthl = hl->hl_next;
-		free((void*)hl);
+		nexthls = hls->next;
+		free((void*)hls->nodes);
+		free((void*)hls);
 	}
-	anchor->hl_first = NULL;
+	anchor->first = NULL;
+	anchor->current = NULL;
+	anchor->root = NULL;
+
+	anchor->lookaside = NULL;
+
 	prep_startpos = prep_endpos = NULL_POSITION;
 }
 
@@ -350,6 +396,126 @@ clr_filter()
 	clr_hlist(&filter_anchor);
 }
 
+	struct hilite_node*
+hlist_last(anchor)
+	struct hilite_tree *anchor;
+{
+	struct hilite_node *n = anchor->root;
+	while (n != NULL && n->right != NULL)
+		n = n->right;
+	return n;
+}
+
+	struct hilite_node*
+hlist_next(n)
+	struct hilite_node *n;
+{
+	return n->next;
+}
+
+	struct hilite_node*
+hlist_prev(n)
+	struct hilite_node *n;
+{
+	return n->prev;
+}
+
+/*
+ * Find the node covering pos, or the node after it if no node covers it,
+ * or return NULL if pos is after the last range. Remember the found node,
+ * to speed up subsequent searches for the same or similar positions (if
+ * we return NULL, remember the last node.)
+ */
+	struct hilite_node*
+hlist_find(anchor, pos)
+	struct hilite_tree *anchor;
+	POSITION pos;
+{
+	struct hilite_node *n, *m;
+
+	if (anchor->lookaside)
+	{
+		int steps = 0;
+		int hit = 0;
+
+		n = anchor->lookaside;
+
+		for (;;)
+		{
+			if (pos < n->r.hl_endpos)
+			{
+				if (n->prev == NULL || pos >= n->prev->r.hl_endpos)
+				{
+					hit = 1;
+					break;
+				}
+			} else if (n->next == NULL)
+			{
+				n = NULL;
+				hit = 1;
+				break;
+			}
+
+			/*
+			 * If we don't find the right node within a small
+			 * distance, don't keep doing a linear search!
+			 */
+			if (steps >= HILITE_LOOKASIDE_STEPS)
+				break;
+			steps++;
+
+			if (pos < n->r.hl_endpos)
+				anchor->lookaside = n = n->prev;
+			else
+				anchor->lookaside = n = n->next;
+		}
+
+		if (hit)
+			return n;
+	}
+
+	n = anchor->root;
+	m = NULL;
+
+	while (n != NULL)
+	{
+		if (pos < n->r.hl_startpos)
+		{
+			if (n->left != NULL)
+			{
+				m = n;
+				n = n->left;
+				continue;
+			}
+			break;
+		}
+		if (pos >= n->r.hl_endpos)
+		{
+			if (n->right != NULL)
+			{
+				n = n->right;
+				continue;
+			}
+			if (m != NULL)
+			{
+				n = m;
+			} else
+			{
+				m = n;
+				n = NULL;
+			}
+		}
+		break;
+	}
+
+	if (n != NULL)
+		anchor->lookaside = n;
+	else if (m != NULL)
+		anchor->lookaside = m;
+
+	return n;
+}
+
 /*
  * Should any characters in a specified range be highlighted?
  */
@@ -358,18 +524,8 @@ is_hilited_range(pos, epos)
 	POSITION pos;
 	POSITION epos;
 {
-	struct hilite *hl;
-
-	/*
-	 * Look at each highlight and see if any part of it falls in the range.
-	 */
-	for (hl = hilite_anchor.hl_first;  hl != NULL;  hl = hl->hl_next)
-	{
-		if (hl->hl_endpos > pos &&
-		    (epos == NULL_POSITION || epos > hl->hl_startpos))
-			return (1);
-	}
-	return (0);
+	struct hilite_node *n = hlist_find(&hilite_anchor, pos);
+	return (n != NULL && (epos == NULL_POSITION || epos > n->r.hl_startpos));
 }
 
 /* 
@@ -379,24 +535,64 @@ is_hilited_range(pos, epos)
 is_filtered(pos)
 	POSITION pos;
 {
-	struct hilite *hl;
+	struct hilite_node *n;
 
 	if (ch_getflags() & CH_HELPFILE)
 		return (0);
 
-	/*
-	 * Look at each filter and see if the start position
-	 * equals the start position of the line.
-	 */
-	for (hl = filter_anchor.hl_first;  hl != NULL;  hl = hl->hl_next)
+	n = hlist_find(&filter_anchor, pos);
+	return (n != NULL && pos >= n->r.hl_startpos);
+}
+
+/*
+ * If pos is hidden, return the next position which isn't, otherwise
+ * just return pos.
+ */
+	public POSITION
+next_unfiltered(pos)
+	POSITION pos;
+{
+	struct hilite_node *n;
+
+	if (ch_getflags() & CH_HELPFILE)
+		return (pos);
+
+	n = hlist_find(&filter_anchor, pos);
+	while (n != NULL && pos >= n->r.hl_startpos)
 	{
-		if (hl->hl_startpos == pos)
-			return (1);
+		pos = n->r.hl_endpos;
+		n = n->next;
 	}
-	return (0);
+	return (pos);
 }
 
 /*
+ * If pos is hidden, return the previous position which isn't or 0 if
+ * we're filtered right to the beginning, otherwise just return pos.
+ */
+	public POSITION
+prev_unfiltered(pos)
+	POSITION pos;
+{
+	struct hilite_node *n;
+
+	if (ch_getflags() & CH_HELPFILE)
+		return (pos);
+
+	n = hlist_find(&filter_anchor, pos);
+	while (n != NULL && pos >= n->r.hl_startpos)
+	{
+		pos = n->r.hl_startpos;
+		if (pos == 0)
+			break;
+		pos--;
+		n = n->prev;
+	}
+	return (pos);
+}
+
+
+/*
  * Should any characters in a specified range be highlighted?
  * If nohide is nonzero, don't consider hide_hilite.
  */
@@ -447,43 +643,288 @@ is_hilited(pos, epos, nohide, p_matches)
 }
 
 /*
+ * Tree node storage: get the current block of nodes if it has spare
+ * capacity, or create a new one if not.
+ */
+	static struct hilite_storage*
+hlist_getstorage(anchor)
+	struct hilite_tree *anchor;
+{
+	int capacity = 1;
+	struct hilite_storage *s;
+
+	if (anchor->current)
+	{
+		if (anchor->current->used < anchor->current->capacity)
+			return anchor->current;
+		capacity = anchor->current->capacity * 2;
+	}
+
+	s = (struct hilite_storage *) ecalloc(1, sizeof(struct hilite_storage));
+	s->nodes = (struct hilite_node *) ecalloc(capacity, sizeof(struct hilite_node));
+	s->capacity = capacity;
+	s->used = 0;
+	s->next = NULL;
+	if (anchor->current)
+		anchor->current->next = s;
+	else
+		anchor->first = s;
+	anchor->current = s;
+	return s;
+}
+
+/*
+ * Tree node storage: retrieve a new empty node to be inserted into the
+ * tree.
+ */
+	static struct hilite_node*
+hlist_getnode(anchor)
+	struct hilite_tree *anchor;
+{
+	struct hilite_storage *s = hlist_getstorage(anchor);
+	return &s->nodes[s->used++];
+}
+
+/*
+ * Rotate the tree left around a pivot node.
+ */
+	static void
+hlist_rotate_left(anchor, n)
+	struct hilite_tree *anchor;
+	struct hilite_node *n;
+{
+	struct hilite_node *np = n->parent;
+	struct hilite_node *nr = n->right;
+	struct hilite_node *nrl = n->right->left;
+
+	if (np != NULL)
+	{
+		if (n == np->left)
+			np->left = nr;
+		else
+			np->right = nr;
+	} else
+	{
+		anchor->root = nr;
+	}
+	nr->left = n;
+	n->right = nrl;
+
+	nr->parent = np;
+	n->parent = nr;
+	if (nrl != NULL)
+		nrl->parent = n;
+}
+
+/*
+ * Rotate the tree right around a pivot node.
+ */
+	static void
+hlist_rotate_right(anchor, n)
+	struct hilite_tree *anchor;
+	struct hilite_node *n;
+{
+	struct hilite_node *np = n->parent;
+	struct hilite_node *nl = n->left;
+	struct hilite_node *nlr = n->left->right;
+
+	if (np != NULL)
+	{
+		if (n == np->right)
+			np->right = nl;
+		else
+			np->left = nl;
+	} else
+	{
+		anchor->root = nl;
+	}
+	nl->right = n;
+	n->left = nlr;
+
+	nl->parent = np;
+	n->parent = nl;
+	if (nlr != NULL)
+		nlr->parent = n;
+}
+
+
+/*
  * Add a new hilite to a hilite list.
  */
 	static void
 add_hilite(anchor, hl)
-	struct hilite *anchor;
+	struct hilite_tree *anchor;
 	struct hilite *hl;
 {
-	struct hilite *ihl;
+	struct hilite_node *p, *n, *u;
+
+	/* Ignore empty ranges. */
+	if (hl->hl_startpos >= hl->hl_endpos)
+		return;
+
+	p = anchor->root;
+
+	/* Inserting the very first node is trivial. */
+	if (p == NULL)
+	{
+		n = hlist_getnode(anchor);
+		n->r = *hl;
+		anchor->root = n;
+		anchor->lookaside = n;
+		return;
+	}
 
 	/*
-	 * Hilites are sorted in the list; find where new one belongs.
-	 * Insert new one after ihl.
+	 * Find our insertion point. If we come across any overlapping
+	 * or adjoining existing ranges, shrink our range and discard
+	 * if it become empty.
 	 */
-	for (ihl = anchor;  ihl->hl_next != NULL;  ihl = ihl->hl_next)
+	for (;;)
 	{
-		if (ihl->hl_next->hl_startpos > hl->hl_startpos)
+		if (hl->hl_startpos < p->r.hl_startpos)
+		{
+			if (hl->hl_endpos > p->r.hl_startpos)
+				hl->hl_endpos = p->r.hl_startpos;
+			if (p->left != NULL)
+			{
+				p = p->left;
+				continue;
+			}
 			break;
+		}
+		if (hl->hl_startpos < p->r.hl_endpos) {
+			hl->hl_startpos = p->r.hl_endpos;
+			if (hl->hl_startpos >= hl->hl_endpos)
+				return;
+		}
+		if (p->right != NULL)
+		{
+			p = p->right;
+			continue;
+		}
+		break;
 	}
 
 	/*
-	 * Truncate hilite so it doesn't overlap any existing ones
-	 * above and below it.
+	 * Now we're at the right leaf, again check for contiguous ranges
+	 * and extend the existing node if possible to avoid the
+	 * insertion. Otherwise insert a new node at the leaf.
 	 */
-	if (ihl != anchor)
-		hl->hl_startpos = MAXPOS(hl->hl_startpos, ihl->hl_endpos);
-	if (ihl->hl_next != NULL)
-		hl->hl_endpos = MINPOS(hl->hl_endpos, ihl->hl_next->hl_startpos);
-	if (hl->hl_startpos >= hl->hl_endpos)
+	if (hl->hl_startpos < p->r.hl_startpos) {
+		if (hl->hl_endpos == p->r.hl_startpos)
+		{
+			p->r.hl_startpos = hl->hl_startpos;
+			return;
+		}
+		if (p->prev != NULL && p->prev->r.hl_endpos == hl->hl_startpos)
+		{
+			p->prev->r.hl_endpos = hl->hl_endpos;
+			return;
+		}
+
+		p->left = n = hlist_getnode(anchor);
+		n->next = p;
+		if (p->prev != NULL)
+		{
+			n->prev = p->prev;
+			p->prev->next = n;
+		}
+		p->prev = n;
+	} else {
+		if (p->r.hl_endpos == hl->hl_startpos)
+		{
+			p->r.hl_endpos = hl->hl_endpos;
+			return;
+		}
+		if (p->next != NULL && hl->hl_endpos == p->next->r.hl_startpos) {
+			p->next->r.hl_startpos = hl->hl_startpos;
+			return;
+		}
+
+		p->right = n = hlist_getnode(anchor);
+		n->prev = p;
+		if (p->next != NULL)
+		{
+			n->next = p->next;
+			p->next->prev = n;
+		}
+		p->next = n;
+	}
+	n->parent = p;
+	n->red = 1;
+	n->r = *hl;
+
+	/*
+	 * The tree is in the correct order and covers the right ranges
+	 * now, but may have become unbalanced. Rebalance it using the
+	 * standard red-black tree constraints and operations.
+	 */
+	for (;;)
 	{
+		/* case 1 - current is root, root is always black */
+		if (n->parent == NULL)
+		{
+			n->red = 0;
+			break;
+		}
+
+		/* case 2 - parent is black, we can always be red */
+		if (!n->parent->red)
+			break;
+
 		/*
-		 * Hilite was truncated out of existence.
+		 * constraint: because the root must be black, if our
+		 * parent is red it cannot be the root therefore we must
+		 * have a grandparent
 		 */
-		free(hl);
-		return;
+
+		/*
+		 * case 3 - parent and uncle are red, repaint them black,
+		 * the grandparent red, and start again at the grandparent.
+		 */
+		u = n->parent->parent->left;
+		if (n->parent == u) 
+			u = n->parent->parent->right;
+		if (u != NULL && u->red)
+		{
+			n->parent->red = 0;
+			u->red = 0;
+			n = n->parent->parent;
+			n->red = 1;
+			continue;
+		}
+
+		/*
+		 * case 4 - parent is red but uncle is black, parent and
+		 * grandparent on opposite sides. We need to start
+		 * changing the structure now. This and case 5 will shorten
+		 * our branch and lengthen the sibling, between them
+		 * restoring balance.
+		 */
+		if (n == n->parent->right &&
+		    n->parent == n->parent->parent->left)
+		{
+			hlist_rotate_left(anchor, n->parent);
+			n = n->left;
+		} else if (n == n->parent->left &&
+			   n->parent == n->parent->parent->right)
+		{
+			hlist_rotate_right(anchor, n->parent);
+			n = n->right;
+		}
+
+		/*
+		 * case 5 - parent is red but uncle is black, parent and
+		 * grandparent on same side
+		 */
+		n->parent->red = 0;
+		n->parent->parent->red = 1;
+		if (n == n->parent->left)
+			hlist_rotate_right(anchor, n->parent->parent);
+		else
+			hlist_rotate_left(anchor, n->parent->parent);
+		break;
 	}
-	hl->hl_next = ihl->hl_next;
-	ihl->hl_next = hl;
 }
 
 /*
@@ -496,12 +937,11 @@ create_hilites(linepos, start_index, end_index, chpos)
 	int end_index;
 	int *chpos;
 {
-	struct hilite *hl;
+	struct hilite hl;
 	int i;
 
 	/* Start the first hilite. */
-	hl = (struct hilite *) ecalloc(1, sizeof(struct hilite));
-	hl->hl_startpos = linepos + chpos[start_index];
+	hl.hl_startpos = linepos + chpos[start_index];
 
 	/*
 	 * Step through the displayed chars.
@@ -515,13 +955,12 @@ create_hilites(linepos, start_index, end_index, chpos)
 	{
 		if (chpos[i] != chpos[i-1] + 1 || i == end_index)
 		{
-			hl->hl_endpos = linepos + chpos[i-1] + 1;
-			add_hilite(&hilite_anchor, hl);
+			hl.hl_endpos = linepos + chpos[i-1] + 1;
+			add_hilite(&hilite_anchor, &hl);
 			/* Start new hilite unless this is the last char. */
 			if (i < end_index)
 			{
-				hl = (struct hilite *) ecalloc(1, sizeof(struct hilite));
-				hl->hl_startpos = linepos + chpos[i];
+				hl.hl_startpos = linepos + chpos[i];
 			}
 		}
 	}
@@ -545,8 +984,6 @@ hilite_line(linepos, line, line_len, chpos, sp, ep, cvt_ops)
 	char *searchp;
 	char *line_end = line + line_len;
 
-	if (sp == NULL || ep == NULL)
-		return;
 	/*
 	 * sp and ep delimit the first match in the line.
 	 * Mark the corresponding file positions, then
@@ -559,6 +996,8 @@ hilite_line(linepos, line, line_len, chpos, sp, ep, cvt_ops)
 	 */
 	searchp = line;
 	do {
+		if (sp == NULL || ep == NULL)
+			return;
 		create_hilites(linepos, sp-line, ep-line, chpos);
 		/*
 		 * If we matched more than zero characters,
@@ -694,11 +1133,10 @@ search_pos(search_type)
 			 * It starts at the jump target (if searching backwards),
 			 * or at the jump target plus one (if forwards).
 			 */
-			linenum = jump_sline;
+			linenum = adjsline(jump_sline);
 			if (search_type & SRCH_FORW) 
-			    add_one = 1;
+				add_one = 1;
 		}
-		linenum = adjsline(linenum);
 		pos = position(linenum);
 		if (add_one)
 			pos = forw_raw_line(pos, (char **)NULL, (int *)NULL);
@@ -709,20 +1147,20 @@ search_pos(search_type)
 	 */
 	if (search_type & SRCH_FORW) 
 	{
-	    while (pos == NULL_POSITION)
-	    {
-	        if (++linenum >= sc_height)
-	            break;
-	        pos = position(linenum);
-	    }
+		while (pos == NULL_POSITION)
+		{
+			if (++linenum >= sc_height)
+				break;
+			pos = position(linenum);
+		}
 	} else 
 	{
-	    while (pos == NULL_POSITION)
-	    {
-	        if (--linenum < 0)
-	            break;
-	        pos = position(linenum);
-	    }
+		while (pos == NULL_POSITION)
+		{
+			if (--linenum < 0)
+				break;
+			pos = position(linenum);
+		}
 	}
 	return (pos);
 }
@@ -842,16 +1280,19 @@ search_range(pos, endpos, search_type, matches, maxlines, plinepos, pendpos)
 		 * Check to see if the line matches the filter pattern.
 		 * If so, add an entry to the filter list.
 		 */
-		if ((search_type & SRCH_FIND_ALL) && prev_pattern(&filter_info)) {
+		if (((search_type & SRCH_FIND_ALL) ||
+		     prep_startpos == NULL_POSITION ||
+		     linepos < prep_startpos || linepos >= prep_endpos) &&
+		    prev_pattern(&filter_info)) {
 			int line_filter = match_pattern(info_compiled(&filter_info), filter_info.text,
 				cline, line_len, &sp, &ep, 0, filter_info.search_type);
 			if (line_filter)
 			{
-				struct hilite *hl = (struct hilite *)
-					ecalloc(1, sizeof(struct hilite));
-				hl->hl_startpos = linepos;
-				hl->hl_endpos = pos;
-				add_hilite(&filter_anchor, hl);
+				struct hilite hl;
+				hl.hl_startpos = linepos;
+				hl.hl_endpos = pos;
+				add_hilite(&filter_anchor, &hl);
+				continue;
 			}
 		}
 #endif
@@ -1108,6 +1549,12 @@ prep_hilite(spos, epos, maxlines)
 		return;
 
 	/*
+	 * Make sure our prep region always starts at the beginning of
+	 * a line. (search_range takes care of the end boundary below.)
+	 */
+	spos = back_raw_line(spos+1, (char **)NULL, (int *)NULL);
+
+	/*
 	 * If we're limited to a max number of lines, figure out the
 	 * file position we should stop at.
 	 */
@@ -1199,12 +1646,48 @@ prep_hilite(spos, epos, maxlines)
 	{
 		int search_type = SRCH_FORW | SRCH_FIND_ALL;
 		search_type |= (search_info.search_type & SRCH_NO_REGEX);
-		result = search_range(spos, epos, search_type, 0,
-				maxlines, (POSITION*)NULL, &new_epos);
-		if (result < 0)
-			return;
-		if (prep_endpos == NULL_POSITION || new_epos > prep_endpos)
-			nprep_endpos = new_epos;
+		for (;;) 
+		{
+			result = search_range(spos, epos, search_type, 0, maxlines, (POSITION*)NULL, &new_epos);
+			if (result < 0)
+				return;
+			if (prep_endpos == NULL_POSITION || new_epos > prep_endpos)
+				nprep_endpos = new_epos;
+
+			/*
+			 * Check both ends of the resulting prep region to
+			 * make sure they're not filtered. If they are,
+			 * keep going at least one more line until we find
+			 * something that isn't filtered, or hit the end.
+			 */
+			if (prep_endpos == NULL_POSITION || nprep_endpos > prep_endpos)
+			{
+				if (new_epos >= nprep_endpos && is_filtered(new_epos-1))
+				{
+					spos = nprep_endpos;
+					epos = forw_raw_line(nprep_endpos, (char **)NULL, (int *)NULL);
+					if (epos == NULL_POSITION)
+						break;
+					maxlines = 1;
+					continue;
+				}
+			}
+
+			if (prep_startpos == NULL_POSITION || nprep_startpos < prep_startpos)
+			{
+				if (nprep_startpos > 0 && is_filtered(nprep_startpos))
+				{
+					epos = nprep_startpos;
+					spos = back_raw_line(nprep_startpos, (char **)NULL, (int *)NULL);
+					if (spos == NULL_POSITION)
+						break;
+					nprep_startpos = spos;
+					maxlines = 1;
+					continue;
+				}
+			}
+			break;
+		}
 	}
 	prep_startpos = nprep_startpos;
 	prep_endpos = nprep_endpos;
@@ -1243,12 +1726,16 @@ is_filtering()
  * This function is called by the V8 regcomp to report 
  * errors in regular expressions.
  */
+public int reg_show_error = 1;
+
 	void 
 regerror(s) 
 	char *s; 
 {
 	PARG parg;
 
+	if (!reg_show_error)
+		return;
 	parg.p_string = s;
 	error("%s", &parg);
 }
diff --git a/contrib/less/signal.c b/contrib/less/signal.c
index 9c6c2f6..caa2143 100644
--- a/contrib/less/signal.c
+++ b/contrib/less/signal.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
diff --git a/contrib/less/tags.c b/contrib/less/tags.c
index 51fbb56..5acf374 100644
--- a/contrib/less/tags.c
+++ b/contrib/less/tags.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
@@ -14,7 +14,8 @@
 
 #if TAGS
 
-public char *tags = "tags";
+public char ztags[] = "tags";
+public char *tags = ztags;
 
 static int total;
 static int curseq;
@@ -287,7 +288,7 @@ findctag(tag)
 
 	cleantags();
 	total = 0;
-	taglen = strlen(tag);
+	taglen = (int) strlen(tag);
 
 	/*
 	 * Search the tags file for the desired tag.
@@ -445,7 +446,7 @@ ctagsearch()
 		 * If tagendline is set, make sure we match all
 		 * the way to end of line (no extra chars after the match).
 		 */
-		len = strlen(curtag->tag_pattern);
+		len = (int) strlen(curtag->tag_pattern);
 		if (strncmp(curtag->tag_pattern, line, len) == 0 &&
 		    (!curtag->tag_endline || line[len] == '\0' || line[len] == '\r'))
 		{
@@ -491,7 +492,7 @@ findgtag(tag, type)
 	{
 		fp = stdin;
 		/* Set tag default because we cannot read stdin again. */
-		tags = "tags";
+		tags = ztags;
 	} else
 	{
 #if !HAVE_POPEN
@@ -551,7 +552,7 @@ findgtag(tag, type)
 #endif
 				return TAG_INTR;
 			}
-			len = strlen(buf);
+			len = (int) strlen(buf);
 			if (len > 0 && buf[len-1] == '\n')
 				buf[len-1] = '\0';
 			else
diff --git a/contrib/less/ttyin.c b/contrib/less/ttyin.c
index db6e72e..129eea1 100644
--- a/contrib/less/ttyin.c
+++ b/contrib/less/ttyin.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
diff --git a/contrib/less/ubin.uni b/contrib/less/ubin.uni
new file mode 100644
index 0000000..39ec303
--- /dev/null
+++ b/contrib/less/ubin.uni
@@ -0,0 +1,32 @@
+/* Generated by "./mkutable -f2 Cc Cf Cs Co Zl Zp -- unicode/UnicodeData.txt" on Mon Jul 14 16:21:22 PDT 2014 */
+	{ 0x0000, 0x001f }, /* Cc */
+	{ 0x007f, 0x009f }, /* Cc */
+	{ 0x00ad, 0x00ad }, /* Cf */
+	{ 0x0600, 0x0605 }, /* Cf */
+	{ 0x061c, 0x061c }, /* Cf */
+	{ 0x06dd, 0x06dd }, /* Cf */
+	{ 0x070f, 0x070f }, /* Cf */
+	{ 0x180e, 0x180e }, /* Cf */
+	{ 0x200b, 0x200f }, /* Cf */
+	{ 0x2028, 0x2028 }, /* Zl */
+	{ 0x2029, 0x2029 }, /* Zp */
+	{ 0x202a, 0x202e }, /* Cf */
+	{ 0x2060, 0x2064 }, /* Cf */
+	{ 0x2066, 0x206f }, /* Cf */
+	{ 0xd800, 0xd800 }, /* Cs */
+	{ 0xdb7f, 0xdb80 }, /* Cs */
+	{ 0xdbff, 0xdc00 }, /* Cs */
+	{ 0xdfff, 0xdfff }, /* Cs */
+	{ 0xe000, 0xe000 }, /* Co */
+	{ 0xf8ff, 0xf8ff }, /* Co */
+	{ 0xfeff, 0xfeff }, /* Cf */
+	{ 0xfff9, 0xfffb }, /* Cf */
+	{ 0x110bd, 0x110bd }, /* Cf */
+	{ 0x1bca0, 0x1bca3 }, /* Cf */
+	{ 0x1d173, 0x1d17a }, /* Cf */
+	{ 0xe0001, 0xe0001 }, /* Cf */
+	{ 0xe0020, 0xe007f }, /* Cf */
+	{ 0xf0000, 0xf0000 }, /* Co */
+	{ 0xffffd, 0xffffd }, /* Co */
+	{ 0x100000, 0x100000 }, /* Co */
+	{ 0x10fffd, 0x10fffd }, /* Co */
diff --git a/contrib/less/version.c b/contrib/less/version.c
index d3ecd14..87b0b42 100644
--- a/contrib/less/version.c
+++ b/contrib/less/version.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1984-2012  Mark Nudelman
+ * Copyright (C) 1984-2015  Mark Nudelman
  *
  * You may distribute under the terms of either the GNU General Public
  * License or the Less License, as specified in the README file.
@@ -762,6 +762,35 @@ v455  11/5/12   Fix typo.
 v456  11/8/12   Fix option string incompatibility.
 v457  12/8/12   Use new option string syntax only after --use-backslash.
 v458  4/4/13    Fix display bug in using up/down in cmd buffer.
+-----------------------------------------------------------------
+v459  5/6/13    Fix ++ bug.
+v460  6/19/13   Automate construction of Unicode tables.
+v461  6/21/13   Collapse multiple CRs before LF.
+v462  11/26/13  Don't overwrite history file, just append to it.
+v463  7/13/14   Misc. fixes.
+v464  7/19/14   Fix bugs & improve performance in & filtering
+                (thanks to John Sullivan).
+v465  8/9/14    More fixes from John Sullivan.
+v466  8/23/14   Add colon to LESSANSIMIDCHARS.
+v467  9/18/14   Misc. fixes.
+v468  9/18/14   Fix typo
+v469  10/2/14   Allow extra string in command to append to a multichar
+                cmd without executing it; fix bug using GNU regex.
+v470  10/5/14   Fix some compiler warnings.
+v471  12/14/14  Fix unget issues with prompt. Allow disabling history
+                when compiled value of LESSHISTFILE = "-".
+v473  12/19/14  Fix prompt bug with stdin and -^P in lesskey extra string.
+v474  1/30/15   Fix bug in backwards search with match on bottom line.
+                Make follow mode reopen file if file shrinks.
+v475  3/2/15    Fix possible buffer overrun with invalid UTF-8; 
+                fix bug when compiled with no regex; fix non-match search.
+v476  5/3/15    Update man pages.
+v477  5/19/15   Fix off-by-one in jump_forw_buffered;
+                don't add FAKE_* files to cmd history.
+v478  5/21/15   Fix nonportable pointer usage in hilite tree.
+v479  7/6/15    Allow %% escapes in LESSOPEN variable.
+v480  7/24/15	Fix bug in no-regex searches; support MSVC v1900.
+v481  8/20/15	Fix broken -g option.
 */
 
-char version[] = "458";
+char version[] = "481";
diff --git a/contrib/less/wide.uni b/contrib/less/wide.uni
new file mode 100644
index 0000000..b43f7d3
--- /dev/null
+++ b/contrib/less/wide.uni
@@ -0,0 +1,81 @@
+/* Generated by "./mkutable -f1 W -- unicode/EastAsianWidth.txt" on Mon Jul 14 16:21:23 PDT 2014 */
+	{ 0x1100, 0x1100 }, /* W */
+	{ 0x2329, 0x232a }, /* W */
+	{ 0x2e80, 0x2e80 }, /* W */
+	{ 0x2e9b, 0x2e9b }, /* W */
+	{ 0x2f00, 0x2f00 }, /* W */
+	{ 0x2ff0, 0x2ff0 }, /* W */
+	{ 0x3001, 0x3001 }, /* W */
+	{ 0x3004, 0x3012 }, /* W */
+	{ 0x3014, 0x301e }, /* W */
+	{ 0x3020, 0x3021 }, /* W */
+	{ 0x302a, 0x302a }, /* W */
+	{ 0x302e, 0x302e }, /* W */
+	{ 0x3030, 0x3031 }, /* W */
+	{ 0x3036, 0x3036 }, /* W */
+	{ 0x3038, 0x3038 }, /* W */
+	{ 0x303b, 0x303e }, /* W */
+	{ 0x3041, 0x3041 }, /* W */
+	{ 0x3099, 0x3099 }, /* W */
+	{ 0x309b, 0x309b }, /* W */
+	{ 0x309d, 0x309d }, /* W */
+	{ 0x309f, 0x30a1 }, /* W */
+	{ 0x30fb, 0x30fc }, /* W */
+	{ 0x30ff, 0x30ff }, /* W */
+	{ 0x3105, 0x3105 }, /* W */
+	{ 0x3131, 0x3131 }, /* W */
+	{ 0x3190, 0x3190 }, /* W */
+	{ 0x3192, 0x3192 }, /* W */
+	{ 0x3196, 0x3196 }, /* W */
+	{ 0x31a0, 0x31a0 }, /* W */
+	{ 0x31c0, 0x31c0 }, /* W */
+	{ 0x31f0, 0x31f0 }, /* W */
+	{ 0x3200, 0x3200 }, /* W */
+	{ 0x3220, 0x3220 }, /* W */
+	{ 0x322a, 0x322a }, /* W */
+	{ 0x3250, 0x3251 }, /* W */
+	{ 0x3260, 0x3260 }, /* W */
+	{ 0x3280, 0x3280 }, /* W */
+	{ 0x328a, 0x328a }, /* W */
+	{ 0x32b1, 0x32b1 }, /* W */
+	{ 0x32c0, 0x32c0 }, /* W */
+	{ 0x3300, 0x3300 }, /* W */
+	{ 0x3400, 0x3400 }, /* W */
+	{ 0x4db6, 0x4db6 }, /* W */
+	{ 0x4e00, 0x4e00 }, /* W */
+	{ 0x9fcd, 0x9fcd }, /* W */
+	{ 0xa000, 0xa000 }, /* W */
+	{ 0xa015, 0xa016 }, /* W */
+	{ 0xa490, 0xa490 }, /* W */
+	{ 0xa960, 0xa960 }, /* W */
+	{ 0xac00, 0xac00 }, /* W */
+	{ 0xf900, 0xf900 }, /* W */
+	{ 0xfa6e, 0xfa6e }, /* W */
+	{ 0xfa70, 0xfa70 }, /* W */
+	{ 0xfada, 0xfada }, /* W */
+	{ 0xfe10, 0xfe10 }, /* W */
+	{ 0xfe17, 0xfe19 }, /* W */
+	{ 0xfe30, 0xfe31 }, /* W */
+	{ 0xfe33, 0xfe33 }, /* W */
+	{ 0xfe35, 0xfe45 }, /* W */
+	{ 0xfe47, 0xfe49 }, /* W */
+	{ 0xfe4d, 0xfe4d }, /* W */
+	{ 0xfe50, 0xfe50 }, /* W */
+	{ 0xfe54, 0xfe54 }, /* W */
+	{ 0xfe58, 0xfe5f }, /* W */
+	{ 0xfe62, 0xfe64 }, /* W */
+	{ 0xfe68, 0xfe6a }, /* W */
+	{ 0x1b000, 0x1b000 }, /* W */
+	{ 0x1f200, 0x1f200 }, /* W */
+	{ 0x1f210, 0x1f210 }, /* W */
+	{ 0x1f240, 0x1f240 }, /* W */
+	{ 0x1f250, 0x1f250 }, /* W */
+	{ 0x20000, 0x20000 }, /* W */
+	{ 0x2a6d7, 0x2a6d7 }, /* W */
+	{ 0x2a700, 0x2a700 }, /* W */
+	{ 0x2b735, 0x2b735 }, /* W */
+	{ 0x2b740, 0x2b740 }, /* W */
+	{ 0x2b81e, 0x2b81e }, /* W */
+	{ 0x2f800, 0x2f800 }, /* W */
+	{ 0x2fa1e, 0x2fa1e }, /* W */
+	{ 0x30000, 0x30000 }, /* W */