Resolve conflicts to complete less v408 import.

Approved by:	re (kensmith)

4 files changed, 37 insertions, 20 deletions

diff --git a/contrib/less/less.h b/contrib/less/less.h
index ada9e27..eb40a0f 100644
--- a/contrib/less/less.h
+++ b/contrib/less/less.h
@@ -150,6 +150,8 @@ void free();
 #define IS_DIGIT(c)	((c) >= '0' && (c) <= '9')
 #endif
 
+#define IS_CSI_START(c)	((c) == ESC || ((unsigned char)(c)) == CSI)
+
 #ifndef NULL
 #define	NULL	0
 #endif
@@ -425,6 +427,7 @@ struct textlist
 #endif /* IS_EBCDIC_HOST */
 
 #define	ESC		CONTROL('[')
+#define	CSI		((unsigned char)'\233')
 
 #if _OSK_MWC32
 #define	LSIGNAL(sig,func)	os9_signal(sig,func)
diff --git a/contrib/less/line.c b/contrib/less/line.c
index c1a31fb..217c24c 100644
--- a/contrib/less/line.c
+++ b/contrib/less/line.c
@@ -269,7 +269,7 @@ pshift(shift)
 	while (shifted <= shift && from < curr)
 	{
 		c = linebuf[from];
-		if (c == ESC && ctldisp == OPT_ONPLUS)
+		if (ctldisp == OPT_ONPLUS && IS_CSI_START(c))
 		{
 			/* Keep cumulative effect.  */
 			linebuf[to] = c;
@@ -524,7 +524,7 @@ in_ansi_esc_seq()
 	for (p = &linebuf[curr];  p > linebuf; )
 	{
 		LWCHAR ch = step_char(&p, -1, linebuf);
-		if (ch == ESC)
+		if (IS_CSI_START(ch))
 			return (1);
 		if (!is_ansi_middle(ch))
 			return (0);
@@ -603,13 +603,13 @@ store_char(ch, a, rep, pos)
 			/* Remove whole unrecognized sequence.  */
 			do {
 				--curr;
-			} while (linebuf[curr] != ESC);
+			} while (!IS_CSI_START(linebuf[curr]));
 			return 0;
 		}
 		a = AT_ANSI;	/* Will force re-AT_'ing around it.  */
 		w = 0;
 	}
-	else if (ctldisp == OPT_ONPLUS && ch == ESC)
+	else if (ctldisp == OPT_ONPLUS && IS_CSI_START(ch))
 	{
 		a = AT_ANSI;	/* Will force re-AT_'ing around it.  */
 		w = 0;
@@ -943,7 +943,7 @@ do_append(ch, rep, pos)
 	} else if ((!utf_mode || is_ascii_char(ch)) && control_char((char)ch))
 	{
 	do_control_char:
-		if (ctldisp == OPT_ON || (ctldisp == OPT_ONPLUS && ch == ESC))
+		if (ctldisp == OPT_ON || (ctldisp == OPT_ONPLUS && IS_CSI_START(ch)))
 		{
 			/*
 			 * Output as a normal character.
diff --git a/contrib/less/search.c b/contrib/less/search.c
index e81bce5..c3a3e76 100644
--- a/contrib/less/search.c
+++ b/contrib/less/search.c
@@ -16,6 +16,7 @@
 
 #include "less.h"
 #include "position.h"
+#include "charset.h"
 
 #define	MINPOS(a,b)	(((a) < (b)) ? (a) : (b))
 #define	MAXPOS(a,b)	(((a) > (b)) ? (a) : (b))
@@ -120,24 +121,31 @@ cvt_text(odst, osrc, lenp, ops)
 	int *lenp;
 	int ops;
 {
-	register char *dst;
-	register char *src;
+	char *dst;
+	char *src;
 	register char *src_end;
+	LWCHAR ch;
 
 	if (lenp != NULL)
 		src_end = osrc + *lenp;
 	else
 		src_end = osrc + strlen(osrc);
 
-	for (src = osrc, dst = odst;  src < src_end;  src++)
+	for (src = osrc, dst = odst;  src < src_end;  )
 	{
-		if ((ops & CVT_TO_LC) && IS_UPPER(*src))
+		ch = step_char(&src, +1, src_end);
+		if ((ops & CVT_TO_LC) && IS_UPPER(ch))
+		{
 			/* Convert uppercase to lowercase. */
-			*dst++ = TO_LOWER(*src);
-		else if ((ops & CVT_BS) && *src == '\b' && dst > odst)
+			put_wchar(&dst, TO_LOWER(ch));
+		} else if ((ops & CVT_BS) && ch == '\b' && dst > odst)
+		{
 			/* Delete BS and preceding char. */
-			dst--;
-		else if ((ops & CVT_ANSI) && *src == ESC)
+			do {
+				dst--;
+			} while (dst > odst &&
+				!IS_ASCII_OCTET(*dst) && !IS_UTF8_LEAD(*dst));
+		} else if ((ops & CVT_ANSI) && IS_CSI_START(ch))
 		{
 			/* Skip to end of ANSI escape sequence. */
 			while (src + 1 != src_end)
@@ -145,7 +153,7 @@ cvt_text(odst, osrc, lenp, ops)
 					break;
 		} else 
 			/* Just copy. */
-			*dst++ = *src;
+			put_wchar(&dst, ch);
 	}
 	if ((ops & CVT_CRLF) && dst > odst && dst[-1] == '\r')
 		dst--;
@@ -182,14 +190,18 @@ get_cvt_ops()
  * Are there any uppercase letters in this string?
  */
 	static int
-is_ucase(s)
-	char *s;
+is_ucase(str)
+	char *str;
 {
-	register char *p;
+	char *str_end = str + strlen(str);
+	LWCHAR ch;
 
-	for (p = s;  *p != '\0';  p++)
-		if (IS_UPPER(*p))
+	while (str < str_end)
+	{
+		ch = step_char(&str, +1, str_end);
+		if (IS_UPPER(ch))
 			return (1);
+	}
 	return (0);
 }
 
@@ -679,7 +691,7 @@ adj_hilite_ansi(cvt_ops, line, line_len, npos)
 	char *line_end = *line + line_len;
 
 	if (cvt_ops & CVT_ANSI)
-		while (**line == ESC)
+		while (IS_CSI_START(**line))
 		{
 			/*
 			 * Found an ESC.  The file position moves
diff --git a/contrib/less/signal.c b/contrib/less/signal.c
index 26dcadd..def985d 100644
--- a/contrib/less/signal.c
+++ b/contrib/less/signal.c
@@ -93,6 +93,8 @@ winch(type)
 {
 	LSIGNAL(SIGWINCH, winch);
 	sigs |= S_WINCH;
+	if (reading)
+		intread();
 }
 #else
 #ifdef SIGWIND