Virgin import of less v406.

Approved by:	re (hrs)

15 files changed, 52 insertions, 20 deletions

diff --git a/contrib/less/NEWS b/contrib/less/NEWS
index ddd3137..ccb14ba 100644
--- a/contrib/less/NEWS
+++ b/contrib/less/NEWS
@@ -13,7 +13,7 @@
 ======================================================================
 
 
-	Major changes between "less" versions 394 and 403
+	Major changes between "less" versions 394 and 406
 
 * Allow decimal point in number for % (percent) command.
 
diff --git a/contrib/less/README b/contrib/less/README
index ac2d46e..848fe4d 100644
--- a/contrib/less/README
+++ b/contrib/less/README
@@ -1,7 +1,7 @@
 
-                            Less, version 403
+                            Less, version 406
 
-    This is the distribution of less, version 403, released 25 May 2007.
+    This is the distribution of less, version 406, released 19 Jun 2007.
     This program is part of the GNU project (http://www.gnu.org).
 
     This program is free software.  You may redistribute it and/or
diff --git a/contrib/less/cmdbuf.c b/contrib/less/cmdbuf.c
index 6effb60..ad79ce9 100644
--- a/contrib/less/cmdbuf.c
+++ b/contrib/less/cmdbuf.c
@@ -1390,11 +1390,14 @@ init_cmdhist()
 		}
 		if (strcmp(line, HISTFILE_SEARCH_SECTION) == 0)
 			ml = &mlist_search;
-#if SHELL_ESCAPE || PIPEC
 		else if (strcmp(line, HISTFILE_SHELL_SECTION) == 0)
+		{
+#if SHELL_ESCAPE || PIPEC
 			ml = &mlist_shell;
+#else
+			ml = NULL;
 #endif
-		else if (*line == '"')
+		} else if (*line == '"')
 		{
 			if (ml != NULL)
 				cmd_addhist(ml, line+1);
@@ -1444,11 +1447,18 @@ save_cmdhist()
 #if CMD_HISTORY
 	char *filename;
 	FILE *f;
+	int modified = 0;
 
 	filename = histfile_name();
 	if (filename == NULL)
 		return;
-	if (!mlist_search.modified && !mlist_shell.modified)
+	if (mlist_search.modified)
+		modified = 1;
+#if SHELL_ESCAPE || PIPEC
+	if (mlist_shell.modified)
+		modified = 1;
+#endif
+	if (!modified)
 		return;
 	f = fopen(filename, "w");
 	free(filename);
diff --git a/contrib/less/command.c b/contrib/less/command.c
index da0f3ea..ff48909 100644
--- a/contrib/less/command.c
+++ b/contrib/less/command.c
@@ -85,7 +85,7 @@ static void multi_search();
 cmd_exec()
 {
 	clear_attn();
-	line_left();
+	clear_bot();
 	flush();
 }
 
diff --git a/contrib/less/forwback.c b/contrib/less/forwback.c
index 1eafd6a..7b5bb2d 100644
--- a/contrib/less/forwback.c
+++ b/contrib/less/forwback.c
@@ -138,9 +138,6 @@ forw(n, pos, force, only_last, nblank)
 			force = 1;
 			clear();
 			home();
-		} else
-		{
-			clear_bot();
 		}
 
 		if (pos != position(BOTTOM_PLUS_ONE) || empty_screen())
diff --git a/contrib/less/less.man b/contrib/less/less.man
index 18a1227..2efc49d 100644
--- a/contrib/less/less.man
+++ b/contrib/less/less.man
@@ -1544,4 +1544,4 @@ LESS(1)                                                                LESS(1)
 
 
 
-                           Version 403: 25 May 2007                    LESS(1)
+                           Version 406: 19 Jun 2007                    LESS(1)
diff --git a/contrib/less/less.nro b/contrib/less/less.nro
index 85d05e9..ddba6d8 100644
--- a/contrib/less/less.nro
+++ b/contrib/less/less.nro
@@ -1,4 +1,4 @@
-.TH LESS 1 "Version 403: 25 May 2007"
+.TH LESS 1 "Version 406: 19 Jun 2007"
 .SH NAME
 less \- opposite of more
 .SH SYNOPSIS
diff --git a/contrib/less/lessecho.man b/contrib/less/lessecho.man
index b21f2c0..49c863a 100644
--- a/contrib/less/lessecho.man
+++ b/contrib/less/lessecho.man
@@ -46,4 +46,4 @@ LESSECHO(1)                                                        LESSECHO(1)
 
 
 
-                           Version 403: 25 May 2007                LESSECHO(1)
+                           Version 406: 19 Jun 2007                LESSECHO(1)
diff --git a/contrib/less/lessecho.nro b/contrib/less/lessecho.nro
index 6a08e9b..297a732 100644
--- a/contrib/less/lessecho.nro
+++ b/contrib/less/lessecho.nro
@@ -1,4 +1,4 @@
-.TH LESSECHO 1 "Version 403: 25 May 2007"
+.TH LESSECHO 1 "Version 406: 19 Jun 2007"
 .SH NAME
 lessecho \- expand metacharacters
 .SH SYNOPSIS
diff --git a/contrib/less/lesskey.man b/contrib/less/lesskey.man
index 2b614a5..ffad2c3 100644
--- a/contrib/less/lesskey.man
+++ b/contrib/less/lesskey.man
@@ -357,4 +357,4 @@ LESSKEY(1)                                                          LESSKEY(1)
 
 
 
-                           Version 403: 25 May 2007                 LESSKEY(1)
+                           Version 406: 19 Jun 2007                 LESSKEY(1)
diff --git a/contrib/less/lesskey.nro b/contrib/less/lesskey.nro
index ebb5066..63cb39a 100644
--- a/contrib/less/lesskey.nro
+++ b/contrib/less/lesskey.nro
@@ -1,4 +1,4 @@
-.TH LESSKEY 1 "Version 403: 25 May 2007"
+.TH LESSKEY 1 "Version 406: 19 Jun 2007"
 .SH NAME
 lesskey \- specify key bindings for less
 .SH SYNOPSIS
diff --git a/contrib/less/optfunc.c b/contrib/less/optfunc.c
index 8cb9aa3..4ca5142 100644
--- a/contrib/less/optfunc.c
+++ b/contrib/less/optfunc.c
@@ -45,6 +45,9 @@ extern char *hproto;
 extern char *wproto;
 extern IFILE curr_ifile;
 extern char version[];
+extern int jump_sline;
+extern int jump_sline_fraction;
+extern int less_is_more;
 #if LOGFILE
 extern char *namelogfile;
 extern int force_logfile;
@@ -53,9 +56,6 @@ extern int logfile;
 #if TAGS
 public char *tagoption = NULL;
 extern char *tags;
-extern int jump_sline;
-extern int jump_sline_fraction;
-extern int less_is_more;
 #endif
 #if MSDOS_COMPILER
 extern int nm_fg_color, nm_bg_color;
diff --git a/contrib/less/screen.c b/contrib/less/screen.c
index 6c4fc84..51ab799 100644
--- a/contrib/less/screen.c
+++ b/contrib/less/screen.c
@@ -623,7 +623,25 @@ ltget_env(capname)
 	char *capname;
 {
 	char name[16];
+	char *s;
 
+	s = lgetenv("LESS_TERMCAP_DEBUG");
+	if (s != NULL && *s != '\0')
+	{
+		struct env { struct env *next; char *name; char *value; };
+		static struct env *envs = NULL;
+		struct env *p;
+		for (p = envs;  p != NULL;  p = p->next)
+			if (strcmp(p->name, capname) == 0)
+				return p->value;
+		p = (struct env *) ecalloc(1, sizeof(struct env));
+		p->name = save(capname);
+		p->value = (char *) ecalloc(strlen(capname)+3, sizeof(char));
+		sprintf(p->value, "<%s>", capname);
+		p->next = envs;
+		envs = p;
+		return p->value;
+	}
 	strcpy(name, "LESS_TERMCAP_");
 	strcat(name, capname);
 	return (lgetenv(name));
diff --git a/contrib/less/search.c b/contrib/less/search.c
index e098578..380d278 100644
--- a/contrib/less/search.c
+++ b/contrib/less/search.c
@@ -292,6 +292,7 @@ clear_attn()
 	POSITION old_end_attnpos;
 	POSITION pos;
 	POSITION epos;
+	int moved = 0;
 
 	if (start_attnpos == NULL_POSITION)
 		return;
@@ -319,8 +320,11 @@ clear_attn()
 			(void) forw_line(pos);
 			goto_line(slinenum);
 			put_line();
+			moved = 1;
 		}
 	}
+	if (moved)
+		lower_left();
 }
 #endif
 
diff --git a/contrib/less/version.c b/contrib/less/version.c
index 30efdde..df74e04 100644
--- a/contrib/less/version.c
+++ b/contrib/less/version.c
@@ -690,6 +690,9 @@ v401  3/24/07	Minor documentation fixes.
 v402  3/30/07	Fix autoconf bug when memcpy etc are inline;
 		fix bug in terminating number following -j option.
 v403  5/25/07	Fix Windows build.
+v404  6/5/07	Fix display bug with F command and long lines.
+v405  6/17/07	Fix display bug when using -w option.
+v406  6/17/07	Fix secure build.
 */
 
-char version[] = "403";
+char version[] = "406";