Virgin import of less v415.

30 files changed, 622 insertions, 142 deletions

diff --git a/contrib/less/LICENSE b/contrib/less/LICENSE
index 7e4887bcd768..8112859e8ae8 100644
--- a/contrib/less/LICENSE
+++ b/contrib/less/LICENSE
@@ -2,7 +2,7 @@
                           ------------
 
 Less
-Copyright (C) 1984-2005  Mark Nudelman
+Copyright (C) 1984-2007  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 0154225de76c..3d6b0983c203 100644
--- a/contrib/less/NEWS
+++ b/contrib/less/NEWS
@@ -13,6 +13,17 @@
 ======================================================================
 
 
+	Major changes between "less" versions 409 and 415
+
+* New --follow-name option makes F command follow the name of a file
+  rather than the file descriptor if an open file is renamed.
+
+* Make searching with -i/-I work correctly with non-ASCII text.
+
+* Fix DJGPP build.
+
+======================================================================
+
 	Major changes between "less" versions 406 and 409
 
 * Support CSI escape sequences, like SGR escape sequences.
@@ -698,3 +709,4 @@
 
 
 
+
diff --git a/contrib/less/README b/contrib/less/README
index 73329d63b87c..a456aa631ebe 100644
--- a/contrib/less/README
+++ b/contrib/less/README
@@ -1,7 +1,7 @@
 
-                            Less, version 409
+                            Less, version 415
 
-    This is the distribution of less, version 409, released 12 Oct 2007.
+    This is the distribution of less, version 415, released 15 Nov 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/ch.c b/contrib/less/ch.c
index 2ac14d7a1a8e..eb607d593b01 100644
--- a/contrib/less/ch.c
+++ b/contrib/less/ch.c
@@ -21,6 +21,12 @@
 #include <windows.h>
 #endif
 
+#if HAVE_STAT_INO
+#include <sys/stat.h>
+extern dev_t curr_dev;
+extern ino_t curr_ino;
+#endif
+
 typedef POSITION BLOCKNUM;
 
 public int ignore_eoi;
@@ -98,6 +104,8 @@ static int maxbufs = -1;
 extern int autobuf;
 extern int sigs;
 extern int secure;
+extern int screen_trashed;
+extern int follow_mode;
 extern constant char helpdata[];
 extern constant int size_helpdata;
 extern IFILE curr_ifile;
@@ -195,7 +203,7 @@ fch_get()
 		 */
 		if (!(ch_flags & CH_CANSEEK))
 			return ('?');
-		if (lseek(ch_file, (off_t)pos, 0) == BAD_LSEEK)
+		if (lseek(ch_file, (off_t)pos, SEEK_SET) == BAD_LSEEK)
 		{
  			error("seek error", NULL_PARG);
 			clear_eol();
@@ -276,6 +284,25 @@ fch_get()
 #endif
 #endif
 			slept = TRUE;
+
+#if HAVE_STAT_INO
+			if (follow_mode == FOLLOW_NAME)
+			{
+				/* See whether the file's i-number has changed.
+				 * If so, force the file to be closed and
+				 * reopened. */
+				struct stat st;
+				int r = stat(get_filename(curr_ifile), &st);
+				if (r == 0 && (st.st_ino != curr_ino ||
+					st.st_dev != curr_dev))
+				{
+					/* screen_trashed=2 causes
+					 * make_display to reopen the file. */
+					screen_trashed = 2;
+					return (EOI);
+				}
+			}
+#endif
 		}
 		if (sigs)
 			return (EOI);
@@ -648,7 +675,7 @@ ch_flush()
 	}
 #endif
 
-	if (lseek(ch_file, (off_t)0, 0) == BAD_LSEEK)
+	if (lseek(ch_file, (off_t)0, SEEK_SET) == BAD_LSEEK)
 	{
 		/*
 		 * Warning only; even if the seek fails for some reason,
@@ -711,7 +738,7 @@ ch_delbufs()
 	while (ch_bufhead != END_OF_CHAIN)
 	{
 		bp = ch_bufhead;
-		bp->next->prev = bp->prev;;
+		bp->next->prev = bp->prev;
 		bp->prev->next = bp->next;
 		free(bp);
 	}
@@ -737,7 +764,7 @@ seekable(f)
 		return (0);
 	}
 #endif
-	return (lseek(f, (off_t)1, 0) != BAD_LSEEK);
+	return (lseek(f, (off_t)1, SEEK_SET) != BAD_LSEEK);
 }
 
 /*
diff --git a/contrib/less/command.c b/contrib/less/command.c
index ff48909f8ca8..ef6dfa464e8c 100644
--- a/contrib/less/command.c
+++ b/contrib/less/command.c
@@ -552,6 +552,21 @@ mca_char(c)
 }
 
 /*
+ * Discard any buffered file data.
+ */
+	static void
+clear_buffers()
+{
+	if (!(ch_getflags() & CH_CANSEEK))
+		return;
+	ch_flush();
+	clr_linenum();
+#if HILITE_SEARCH
+	clr_hilite();
+#endif
+}
+
+/*
  * Make sure the screen is displayed.
  */
 	static void
@@ -574,11 +589,20 @@ make_display()
 			jump_loc(initial_scrpos.pos, initial_scrpos.ln);
 	} else if (screen_trashed)
 	{
-		int save_top_scroll;
-		save_top_scroll = top_scroll;
+		int save_top_scroll = top_scroll;
+		int save_ignore_eoi = ignore_eoi;
 		top_scroll = 1;
+		ignore_eoi = 0;
+		if (screen_trashed == 2)
+		{
+			/* Special case used by ignore_eoi: re-open the input file
+			 * and jump to the end of the file. */
+			reopen_curr_ifile();
+			jump_forw();
+		}
 		repaint();
 		top_scroll = save_top_scroll;
+		ignore_eoi = save_ignore_eoi;
 	}
 }
 
@@ -1109,7 +1133,10 @@ commands()
 			ignore_eoi = 1;
 			hit_eof = 0;
 			while (!sigs)
+			{
+				make_display();
 				forward(1, 0, 0);
+			}
 			ignore_eoi = 0;
 			/*
 			 * This gets us back in "F mode" after processing 
@@ -1148,14 +1175,7 @@ commands()
 			 * Flush buffers, then repaint screen.
 			 * Don't flush the buffers on a pipe!
 			 */
-			if (ch_getflags() & CH_CANSEEK)
-			{
-				ch_flush();
-				clr_linenum();
-#if HILITE_SEARCH
-				clr_hilite();
-#endif
-			}
+			clear_buffers();
 			/* FALLTHRU */
 		case A_REPAINT:
 			/*
@@ -1257,7 +1277,8 @@ commands()
 /*
  * Define abbreviation for a commonly used sequence below.
  */
-#define	DO_SEARCH()	if (number <= 0) number = 1;	\
+#define	DO_SEARCH() \
+			if (number <= 0) number = 1;	\
 			mca_search();			\
 			cmd_exec();			\
 			multi_search((char *)NULL, (int) number);
diff --git a/contrib/less/configure b/contrib/less/configure
index 3dbc604ebfef..1d3f57aa4ff3 100755
--- a/contrib/less/configure
+++ b/contrib/less/configure
@@ -3611,6 +3611,73 @@ fi
 
 
 # Checks for general libraries.
+{ echo "$as_me:$LINENO: checking for tgoto in -ltinfo" >&5
+echo $ECHO_N "checking for tgoto in -ltinfo... $ECHO_C" >&6; }
+if test "${ac_cv_lib_tinfo_tgoto+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-ltinfo  $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char tgoto ();
+int
+main ()
+{
+return tgoto ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_link") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest$ac_exeext &&
+       $as_test_x conftest$ac_exeext; then
+  ac_cv_lib_tinfo_tgoto=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_cv_lib_tinfo_tgoto=no
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest_ipa8_conftest.oo \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ echo "$as_me:$LINENO: result: $ac_cv_lib_tinfo_tgoto" >&5
+echo "${ECHO_T}$ac_cv_lib_tinfo_tgoto" >&6; }
+if test $ac_cv_lib_tinfo_tgoto = yes; then
+  have_tinfo=yes
+else
+  have_tinfo=no
+fi
+
 { echo "$as_me:$LINENO: checking for initscr in -lxcurses" >&5
 echo $ECHO_N "checking for initscr in -lxcurses... $ECHO_C" >&6; }
 if test "${ac_cv_lib_xcurses_initscr+set}" = set; then
@@ -4246,6 +4313,61 @@ fi
 fi
 
 if test $curses_broken = 0; then
+
+# -- Try tinfo.
+if test "x$TERMLIBS" = x; then
+  if test $have_tinfo = yes; then
+    TERMLIBS="-ltinfo"
+    SAVE_LIBS=$LIBS
+    LIBS="$LIBS $TERMLIBS"
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+tgetent(0,0); tgetflag(0); tgetnum(0); tgetstr(0,0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_link") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest$ac_exeext &&
+       $as_test_x conftest$ac_exeext; then
+  termok=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	termok=no
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest_ipa8_conftest.oo \
+      conftest$ac_exeext conftest.$ac_ext
+    LIBS=$SAVE_LIBS
+    if test $termok = no; then TERMLIBS=""; fi
+  fi
+fi
+
 # -- Try xcurses.
 if test "x$TERMLIBS" = x; then
   if test $have_xcurses = yes; then
@@ -4895,7 +5017,8 @@ done
 
 
 
-for ac_header in ctype.h errno.h fcntl.h limits.h stdio.h stdlib.h string.h termcap.h termio.h termios.h time.h unistd.h values.h sys/ioctl.h sys/stream.h
+
+for ac_header in ctype.h errno.h fcntl.h limits.h stdio.h stdlib.h string.h termcap.h termio.h termios.h time.h unistd.h values.h sys/ioctl.h sys/stream.h wctype.h
 do
 as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
 if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
@@ -5448,6 +5571,10 @@ fi
 
 
 
+
+
+
+
 # Checks for identifiers.
 { echo "$as_me:$LINENO: checking for off_t" >&5
 echo $ECHO_N "checking for off_t... $ECHO_C" >&6; }
@@ -5656,6 +5783,55 @@ echo "${ECHO_T}no" >&6; }
 fi
 
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ echo "$as_me:$LINENO: checking for st_ino in struct stat" >&5
+echo $ECHO_N "checking for st_ino in struct stat... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/types.h>
+#include <sys/stat.h>
+int
+main ()
+{
+struct stat s; dev_t dev = s.st_dev; ino_t ino = s.st_ino;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_compile") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then
+  { echo "$as_me:$LINENO: result: yes" >&5
+echo "${ECHO_T}yes" >&6; }; cat >>confdefs.h <<\_ACEOF
+#define HAVE_STAT_INO 1
+_ACEOF
+
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	{ echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6; }
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 
 # Checks for library functions.
 { echo "$as_me:$LINENO: checking return type of signal handlers" >&5
@@ -6515,6 +6691,7 @@ fi
 
 rm -f core conftest.err conftest.$ac_objext conftest_ipa8_conftest.oo \
       conftest$ac_exeext conftest.$ac_ext
+
 { echo "$as_me:$LINENO: checking for ctype functions" >&5
 echo $ECHO_N "checking for ctype functions... $ECHO_C" >&6; }
 cat >conftest.$ac_ext <<_ACEOF
@@ -6569,6 +6746,57 @@ fi
 rm -f core conftest.err conftest.$ac_objext conftest_ipa8_conftest.oo \
       conftest$ac_exeext conftest.$ac_ext
 
+{ echo "$as_me:$LINENO: checking for wctype functions" >&5
+echo $ECHO_N "checking for wctype functions... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <wctype.h>
+int
+main ()
+{
+iswlower(0); iswupper(0); towlower(0); towupper(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_link") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest$ac_exeext &&
+       $as_test_x conftest$ac_exeext; then
+  { echo "$as_me:$LINENO: result: yes" >&5
+echo "${ECHO_T}yes" >&6; }; cat >>confdefs.h <<\_ACEOF
+#define HAVE_WCTYPE 1
+_ACEOF
+
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	{ echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6; }
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest_ipa8_conftest.oo \
+      conftest$ac_exeext conftest.$ac_ext
+
 # Checks for external variable ospeed in the termcap library.
 have_ospeed=no
 { echo "$as_me:$LINENO: checking termcap for ospeed" >&5
diff --git a/contrib/less/configure.ac b/contrib/less/configure.ac
index d738607ee30c..72d340729174 100644
--- a/contrib/less/configure.ac
+++ b/contrib/less/configure.ac
@@ -23,6 +23,7 @@ AC_PROG_INSTALL
 AC_SYS_LARGEFILE
 
 # Checks for general libraries.
+AC_CHECK_LIB(tinfo, tgoto, [have_tinfo=yes], [have_tinfo=no])
 AC_CHECK_LIB(xcurses, initscr, [have_xcurses=yes], [have_xcurses=no])
 AC_CHECK_LIB(ncursesw, initscr, [have_ncursesw=yes], [have_ncursesw=no])
 AC_CHECK_LIB(ncurses, initscr, [have_ncurses=yes], [have_ncurses=no])
@@ -51,6 +52,20 @@ fi
 fi
 
 if test $curses_broken = 0; then
+
+# -- Try tinfo.
+if test "x$TERMLIBS" = x; then
+  if test $have_tinfo = yes; then
+    TERMLIBS="-ltinfo"
+    SAVE_LIBS=$LIBS
+    LIBS="$LIBS $TERMLIBS"
+    AC_TRY_LINK(, [tgetent(0,0); tgetflag(0); tgetnum(0); tgetstr(0,0);],
+      [termok=yes], [termok=no])
+    LIBS=$SAVE_LIBS
+    if test $termok = no; then TERMLIBS=""; fi
+  fi
+fi
+
 # -- Try xcurses.
 if test "x$TERMLIBS" = x; then
   if test $have_xcurses = yes; then
@@ -154,7 +169,7 @@ LIBS="$LIBS $TERMLIBS"
 
 # Checks for header files.
 AC_HEADER_STDC
-AC_CHECK_HEADERS([ctype.h errno.h fcntl.h limits.h stdio.h stdlib.h string.h termcap.h termio.h termios.h time.h unistd.h values.h sys/ioctl.h sys/stream.h])
+AC_CHECK_HEADERS([ctype.h errno.h fcntl.h limits.h stdio.h stdlib.h string.h termcap.h termio.h termios.h time.h unistd.h values.h sys/ioctl.h sys/stream.h wctype.h])
 
 # Checks for typedefs, structures, and compiler characteristics.
 AC_HEADER_STAT
@@ -182,6 +197,8 @@ AH_TEMPLATE([HAVE_VOID],
 	[Define HAVE_VOID if your compiler supports the "void" type.])
 AH_TEMPLATE([HAVE_CONST],
 	[Define HAVE_CONST if your compiler supports the "const" modifier.])
+AH_TEMPLATE([HAVE_STAT_INO],
+	[Define HAVE_STAT_INO if your struct stat has st_ino and st_dev.])
 AH_TEMPLATE([HAVE_TIME_T],
 	[Define HAVE_TIME_T if your system supports the "time_t" type.])
 AH_TEMPLATE([HAVE_STRERROR],
@@ -204,6 +221,8 @@ AH_TEMPLATE([HAVE_TERMIOS_FUNCS],
 	[Define HAVE_TERMIOS_FUNCS if you have tcgetattr/tcsetattr.])
 AH_TEMPLATE([HAVE_UPPER_LOWER],
 	[Define HAVE_UPPER_LOWER if you have isupper, islower, toupper, tolower.])
+AH_TEMPLATE([HAVE_WCTYPE],
+	[Define HAVE_WCTYPE if you have iswupper, iswlower, towupper, towlower.])
 AH_TEMPLATE([HAVE_SIGSET_T],
 	[Define HAVE_SIGSET_T you have the sigset_t type.])
 AH_TEMPLATE([HAVE_SIGEMPTYSET],
@@ -224,6 +243,11 @@ AC_TRY_COMPILE(, [const int foo = 0;],
 AC_MSG_CHECKING(for time_t)
 AC_TRY_COMPILE([#include <time.h>], [time_t t = 0;],
   [AC_MSG_RESULT(yes); AC_DEFINE(HAVE_TIME_T)], [AC_MSG_RESULT(no)])
+AC_MSG_CHECKING(for st_ino in struct stat)
+AC_TRY_COMPILE([#include <sys/types.h>
+#include <sys/stat.h>],
+  [struct stat s; dev_t dev = s.st_dev; ino_t ino = s.st_ino;],
+  [AC_MSG_RESULT(yes); AC_DEFINE(HAVE_STAT_INO)], [AC_MSG_RESULT(no)])
 
 # Checks for library functions.
 AC_TYPE_SIGNAL
@@ -307,6 +331,7 @@ AC_TRY_LINK([#include <locale.h>
 #include <ctype.h>
 #include <langinfo.h>], [setlocale(LC_CTYPE,""); isprint(0); iscntrl(0);],
   [AC_MSG_RESULT(yes); AC_DEFINE(HAVE_LOCALE)], [AC_MSG_RESULT(no)])
+
 AC_MSG_CHECKING(for ctype functions)
 AC_TRY_LINK([
 #if HAVE_CTYPE_H
@@ -314,6 +339,10 @@ AC_TRY_LINK([
 #endif], [static int x; x = isupper(x); x = tolower(x); x = toupper(x);],
   [AC_MSG_RESULT(yes); AC_DEFINE(HAVE_UPPER_LOWER)], [AC_MSG_RESULT(no)])
 
+AC_MSG_CHECKING(for wctype functions)
+AC_TRY_LINK([#include <wctype.h>], [iswlower(0); iswupper(0); towlower(0); towupper(0);],
+  [AC_MSG_RESULT(yes); AC_DEFINE(HAVE_WCTYPE)], [AC_MSG_RESULT(no)])
+
 # Checks for external variable ospeed in the termcap library.
 have_ospeed=no
 AC_MSG_CHECKING(termcap for ospeed)
diff --git a/contrib/less/decode.c b/contrib/less/decode.c
index 3007473ec91c..ac1668fa5a86 100644
--- a/contrib/less/decode.c
+++ b/contrib/less/decode.c
@@ -682,7 +682,7 @@ lesskey(filename, sysvar)
 		close(f);
 		return (-1);
 	}
-	if (lseek(f, (off_t)0, 0) == BAD_LSEEK)
+	if (lseek(f, (off_t)0, SEEK_SET) == BAD_LSEEK)
 	{
 		free(buf);
 		close(f);
diff --git a/contrib/less/defines.ds b/contrib/less/defines.ds
index 9138b4215468..c98dcffc35b1 100644
--- a/contrib/less/defines.ds
+++ b/contrib/less/defines.ds
@@ -313,6 +313,9 @@
 /* Define if you have the <ctype.h> header file.  */
 #define HAVE_CTYPE_H 1
 
+/* Define if you have the <wctype.h> header file.  */
+#define HAVE_WCTYPE_H 0
+
 /* Define if you have the <errno.h> header file.  */
 #define HAVE_ERRNO_H 1
 
diff --git a/contrib/less/defines.h.in b/contrib/less/defines.h.in
index c476a51e10b8..8da1baeceda5 100644
--- a/contrib/less/defines.h.in
+++ b/contrib/less/defines.h.in
@@ -282,6 +282,9 @@
 /* Define to 1 if you have the `stat' function. */
 #undef HAVE_STAT
 
+/* Define HAVE_STAT_INO if your struct stat has st_ino and st_dev. */
+#undef HAVE_STAT_INO
+
 /* Define to 1 if you have the <stdint.h> header file. */
 #undef HAVE_STDINT_H
 
@@ -351,6 +354,12 @@
 /* Define HAVE_VOID if your compiler supports the "void" type. */
 #undef HAVE_VOID
 
+/* Define HAVE_WCTYPE if you have iswupper, iswlower, towupper, towlower. */
+#undef HAVE_WCTYPE
+
+/* Define to 1 if you have the <wctype.h> header file. */
+#undef HAVE_WCTYPE_H
+
 /* Define to 1 if you have the `_setjmp' function. */
 #undef HAVE__SETJMP
 
diff --git a/contrib/less/defines.o2 b/contrib/less/defines.o2
index 78da093f3fbd..544003809a69 100644
--- a/contrib/less/defines.o2
+++ b/contrib/less/defines.o2
@@ -279,6 +279,9 @@
 /* Define if you have the <ctype.h> header file.  */
 #define HAVE_CTYPE_H 1
 
+/* Define if you have the <wctype.h> header file.  */
+#define HAVE_WCTYPE_H 0
+
 /* Define if you have the <errno.h> header file.  */
 #define HAVE_ERRNO_H 1
 
diff --git a/contrib/less/defines.o9 b/contrib/less/defines.o9
index 179e3777b360..50955ba1046a 100644
--- a/contrib/less/defines.o9
+++ b/contrib/less/defines.o9
@@ -287,6 +287,9 @@
 /* Define if you have the <ctype.h> header file.  */
 #define HAVE_CTYPE_H 1
 
+/* Define if you have the <wctype.h> header file.  */
+#define HAVE_WCTYPE_H 0
+
 /* Define if you have the <errno.h> header file.  */
 #define HAVE_ERRNO_H 1
 
diff --git a/contrib/less/defines.wn b/contrib/less/defines.wn
index ef04f3b8b53f..7c3194c832b9 100644
--- a/contrib/less/defines.wn
+++ b/contrib/less/defines.wn
@@ -277,6 +277,9 @@
 /* Define if you have the <ctype.h> header file.  */
 #define HAVE_CTYPE_H 1
 
+/* Define if you have the <wctype.h> header file.  */
+#define HAVE_WCTYPE_H 1
+
 /* Define if you have the <errno.h> header file.  */
 #define HAVE_ERRNO_H 1
 
diff --git a/contrib/less/edit.c b/contrib/less/edit.c
index 908f29e18d28..e2e30f2d7af3 100644
--- a/contrib/less/edit.c
+++ b/contrib/less/edit.c
@@ -10,6 +10,9 @@
 
 
 #include "less.h"
+#if HAVE_STAT
+#include <sys/stat.h>
+#endif
 
 public int fd0 = 0;
 
@@ -36,6 +39,11 @@ extern int force_logfile;
 extern char *namelogfile;
 #endif
 
+#if HAVE_STAT_INO
+public dev_t curr_dev;
+public ino_t curr_ino;
+#endif
+
 char *curr_altfilename = NULL;
 static void *curr_altpipe;
 
@@ -178,6 +186,9 @@ close_file()
 		curr_altfilename = NULL;
 	}
 	curr_ifile = NULL_IFILE;
+#if HAVE_STAT_INO
+	curr_ino = curr_dev = 0;
+#endif
 }
 
 /*
@@ -360,7 +371,6 @@ edit_ifile(ifile)
 			}
 		}
 	}
-	free(qopen_filename);
 
 	/*
 	 * Get the new ifile.
@@ -385,10 +395,23 @@ edit_ifile(ifile)
 		if (namelogfile != NULL && is_tty)
 			use_logfile(namelogfile);
 #endif
+#if HAVE_STAT_INO
+		/* Remember the i-number and device of the opened file. */
+		{
+			struct stat statbuf;
+			int r = stat(qopen_filename, &statbuf);
+			if (r == 0)
+			{
+				curr_ino = statbuf.st_ino;
+				curr_dev = statbuf.st_dev;
+			}
+		}
+#endif
 		if (every_first_cmd != NULL)
 			ungetsc(every_first_cmd);
 	}
 
+	free(qopen_filename);
 	no_display = !any_display;
 	flush();
 	any_display = TRUE;
@@ -657,6 +680,14 @@ reedit_ifile(save_ifile)
 	quit(QUIT_ERROR);
 }
 
+	public void
+reopen_curr_ifile()
+{
+	IFILE save_ifile = save_curr_ifile();
+	close_file();
+	reedit_ifile(save_ifile);
+}
+
 /*
  * Edit standard input.
  */
@@ -747,7 +778,7 @@ loop:
 		 * Append: open the file and seek to the end.
 		 */
 		logfile = open(filename, OPEN_APPEND);
-		if (lseek(logfile, (off_t)0, 2) == BAD_LSEEK)
+		if (lseek(logfile, (off_t)0, SEEK_END) == BAD_LSEEK)
 		{
 			close(logfile);
 			logfile = -1;
diff --git a/contrib/less/filename.c b/contrib/less/filename.c
index ea3120fbbd89..aa45b764dab5 100644
--- a/contrib/less/filename.c
+++ b/contrib/less/filename.c
@@ -476,7 +476,7 @@ bin_file(f)
 
 	if (!seekable(f))
 		return (0);
-	if (lseek(f, (off_t)0, 0) == BAD_LSEEK)
+	if (lseek(f, (off_t)0, SEEK_SET) == BAD_LSEEK)
 		return (0);
 	n = read(f, data, sizeof(data));
 	for (i = 0;  i < n;  i++)
@@ -505,7 +505,7 @@ seek_filesize(f)
 {
 	off_t spos;
 
-	spos = lseek(f, (off_t)0, 2);
+	spos = lseek(f, (off_t)0, SEEK_END);
 	if (spos == BAD_LSEEK)
 		return (NULL_POSITION);
 	return ((POSITION) spos);
diff --git a/contrib/less/funcs.h b/contrib/less/funcs.h
index a4a0c7c2d9f0..649598ee48c0 100644
--- a/contrib/less/funcs.h
+++ b/contrib/less/funcs.h
@@ -104,6 +104,7 @@
 	public IFILE save_curr_ifile ();
 	public void unsave_ifile ();
 	public void reedit_ifile ();
+	public void reopen_curr_ifile ();
 	public int edit_stdin ();
 	public void cat_file ();
 	public void use_logfile ();
diff --git a/contrib/less/less.h b/contrib/less/less.h
index 8f0d2d85e83c..078ccbbb43f7 100644
--- a/contrib/less/less.h
+++ b/contrib/less/less.h
@@ -71,6 +71,9 @@
 #if HAVE_CTYPE_H
 #include <ctype.h>
 #endif
+#if HAVE_WCTYPE_H
+#include <wctype.h>
+#endif
 #if HAVE_LIMITS_H
 #include <limits.h>
 #endif
@@ -125,16 +128,23 @@ void free();
 #undef IS_SPACE
 #undef IS_DIGIT
 
-#if !HAVE_UPPER_LOWER
-#define	IS_UPPER(c)	ASCII_IS_UPPER(c)
-#define	IS_LOWER(c)	ASCII_IS_LOWER(c)
-#define	TO_UPPER(c)	ASCII_TO_UPPER(c)
-#define	TO_LOWER(c)	ASCII_TO_LOWER(c)
+#if HAVE_WCTYPE
+#define	IS_UPPER(c)	iswupper(c)
+#define	IS_LOWER(c)	iswlower(c)
+#define	TO_UPPER(c)	towupper(c)
+#define	TO_LOWER(c)	towlower(c)
 #else
+#if HAVE_UPPER_LOWER
 #define	IS_UPPER(c)	isupper((unsigned char) (c))
 #define	IS_LOWER(c)	islower((unsigned char) (c))
 #define	TO_UPPER(c)	toupper((unsigned char) (c))
 #define	TO_LOWER(c)	tolower((unsigned char) (c))
+#else
+#define	IS_UPPER(c)	ASCII_IS_UPPER(c)
+#define	IS_LOWER(c)	ASCII_IS_LOWER(c)
+#define	TO_UPPER(c)	ASCII_TO_UPPER(c)
+#define	TO_LOWER(c)	ASCII_TO_LOWER(c)
+#endif
 #endif
 
 #ifdef isspace
@@ -187,6 +197,13 @@ void free();
 
 #define	BAD_LSEEK	((off_t)-1)
 
+#ifndef SEEK_SET
+#define SEEK_SET 0
+#endif
+#ifndef SEEK_END
+#define SEEK_END 2
+#endif
+
 #ifndef CHAR_BIT
 #define CHAR_BIT 8
 #endif
@@ -457,6 +474,9 @@ struct textlist
 #define	QUIT_ERROR	1
 #define	QUIT_SAVED_STATUS (-1)
 
+#define FOLLOW_DESC     0
+#define FOLLOW_NAME     1
+
 /* filestate flags */
 #define	CH_CANSEEK	001
 #define	CH_KEEPOPEN	002
diff --git a/contrib/less/less.man b/contrib/less/less.man
index 773c7b9ccb51..f9dda92259c0 100644
--- a/contrib/less/less.man
+++ b/contrib/less/less.man
@@ -750,40 +750,35 @@ LESS(1)                                                                LESS(1)
               deinitialization  string does something unnecessary, like clear-
               ing the screen.
 
-       --no-keypad
-              Disables sending the keypad initialization and  deinitialization
-              strings to the terminal.  This is sometimes useful if the keypad
-              strings make the numeric keypad behave in an undesirable manner.
-
        -yn or --max-forw-scroll=n
               Specifies a maximum number of lines to scroll forward.  If it is
-              necessary to scroll forward more than n  lines,  the  screen  is
-              repainted  instead.   The -c or -C option may be used to repaint
-              from the top of the screen if desired.  By default, any  forward
+              necessary  to  scroll  forward  more than n lines, the screen is
+              repainted instead.  The -c or -C option may be used  to  repaint
+              from  the top of the screen if desired.  By default, any forward
               movement causes scrolling.
 
        -[z]n or --window=n
-              Changes  the  default  scrolling  window  size  to n lines.  The
+              Changes the default scrolling  window  size  to  n  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 compati-
+              to change the window size.  The "z" may be omitted for  compati-
               bility with some versions of more.  If the number n is negative,
-              it  indicates  n  lines  less than the current screen size.  For
+              it indicates n lines less than the  current  screen  size.   For
               example, if the screen is 24 lines, -z-4 sets the scrolling win-
-              dow  to  20  lines.   If  the screen is resized to 40 lines, the
+              dow to 20 lines.  If the screen is  resized  to  40  lines,  the
               scrolling window automatically changes to 36 lines.
 
        -"cc or --quotes=cc
-              Changes the filename quoting character.  This may  be  necessary
-              if  you are trying to name a file which contains both spaces and
-              quote characters.  Followed by a single character, this  changes
-              the  quote  character to that character.  Filenames containing a
+              Changes  the  filename quoting character.  This may be necessary
+              if you are trying to name a file which contains both spaces  and
+              quote  characters.  Followed by a single character, this changes
+              the quote character to that character.  Filenames  containing  a
               space should then be surrounded by that character rather than by
-              double  quotes.   Followed  by  two characters, changes the open
-              quote to the first character, and the close quote to the  second
+              double quotes.  Followed by two  characters,  changes  the  open
+              quote  to the first character, and the close quote to the second
               character.  Filenames containing a space should then be preceded
-              by the open quote character and  followed  by  the  close  quote
-              character.   Note  that  even  after  the  quote  characters are
-              changed, this option remains -" (a dash  followed  by  a  double
+              by  the  open  quote  character  and followed by the close quote
+              character.  Note  that  even  after  the  quote  characters  are
+              changed,  this  option  remains  -" (a dash followed by a double
               quote).
 
        -~ or --tilde
@@ -793,10 +788,25 @@ LESS(1)                                                                LESS(1)
 
        -# or --shift
               Specifies the default number of positions to scroll horizontally
-              in the RIGHTARROW and LEFTARROW commands.  If the number  speci-
-              fied  is  zero,  it  sets the default number of positions to one
+              in  the RIGHTARROW and LEFTARROW commands.  If the number speci-
+              fied is zero, it sets the default number  of  positions  to  one
               half of the screen width.
 
+       --no-keypad
+              Disables  sending the keypad initialization and deinitialization
+              strings to the terminal.  This is sometimes useful if the keypad
+              strings make the numeric keypad behave in an undesirable manner.
+
+       --follow-name
+              Normally, if the input file is renamed while  an  F  command  is
+              executing,  less  will  continue  to display the contents of the
+              original file despite its  name  change.   If  --follow-name  is
+              specified, during an F command 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  with  the  same  name  as  the  original  (now
+              renamed) file), less will display the contents of that new file.
+
        --     A command line argument of "--" marks the end  of  option  argu-
               ments.   Any  arguments  following this are interpreted as file-
               names.  This can be useful when viewing a file whose name begins
@@ -1149,10 +1159,10 @@ LESS(1)                                                                LESS(1)
               is followed by a single character (shown as X above) which spec-
               ifies  the line whose byte offset is to be used.  If the charac-
               ter is a "t", the byte offset of the top line in the display  is
-              used, an "m" means use the middle line, a "b" means use the bot-
-              tom line, a "B" means use the line just after the  bottom  line,
-              and  a  "j"  means use the "target" line, as specified by the -j
-              option.
+              used,  an  "m"  means  use  the middle line, a "b" means use the
+              bottom line, a "B" means use the  line  just  after  the  bottom
+              line, and a "j" means use the "target" line, as specified by the
+              -j option.
 
        %B     Replaced by the size of the current input file.
 
@@ -1499,10 +1509,10 @@ LESS(1)                                                                LESS(1)
        expressions turned off via ^R, and also does not  occur  when  less  is
        compiled to use the PCRE regular expression library.
 
-       In certain cases, when search highlighting is enabled and a search pat-
-       tern begins with a ^, more text than the matching string may  be  high-
-       lighted.  (This problem does not occur when less is compiled to use the
-       POSIX regular expression package.)
+       In  certain  cases,  when  search  highlighting is enabled and a search
+       pattern begins with a ^, more text than  the  matching  string  may  be
+       highlighted.  (This problem does not occur when less is compiled to use
+       the POSIX regular expression package.)
 
        On some systems, setlocale claims that ASCII characters 0 thru  31  are
        control  characters rather than binary characters.  This causes less to
@@ -1544,4 +1554,4 @@ LESS(1)                                                                LESS(1)
 
 
 
-                           Version 409: 12 Oct 2007                    LESS(1)
+                           Version 415: 15 Nov 2007                    LESS(1)
diff --git a/contrib/less/less.nro b/contrib/less/less.nro
index 483e194449c6..d2261811c409 100644
--- a/contrib/less/less.nro
+++ b/contrib/less/less.nro
@@ -1,4 +1,4 @@
-.TH LESS 1 "Version 409: 12 Oct 2007"
+.TH LESS 1 "Version 415: 15 Nov 2007"
 .SH NAME
 less \- opposite of more
 .SH SYNOPSIS
@@ -799,11 +799,6 @@ Disables sending the termcap initialization and deinitialization strings
 to the terminal.
 This is sometimes desirable if the deinitialization string does
 something unnecessary, like clearing the screen.
-.IP "\-\-no-keypad"
-Disables sending the keypad initialization and deinitialization strings
-to the terminal.
-This is sometimes useful if the keypad strings make the numeric
-keypad behave in an undesirable manner.
 .IP "\-y\fIn\fP or \-\-max-forw-scroll=\fIn\fP"
 Specifies a maximum number of lines to scroll forward.
 If it is necessary to scroll forward more than \fIn\fP lines,
@@ -847,6 +842,24 @@ Specifies the default number of positions to scroll horizontally
 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.
+.IP "\-\-no-keypad"
+Disables sending the keypad initialization and deinitialization strings
+to the terminal.
+This is sometimes useful if the keypad strings make the numeric
+keypad behave in an undesirable manner.
+.IP "\-\-follow-name"
+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.
+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 
+with the same name as the original (now renamed) file),
+.I less
+will display the contents of that new file.
 .IP \-\-
 A command line argument of "\-\-" marks the end of option arguments.
 Any arguments following this are interpreted as filenames.
diff --git a/contrib/less/lessecho.man b/contrib/less/lessecho.man
index 588f70aaaa0d..98bbf677c351 100644
--- a/contrib/less/lessecho.man
+++ b/contrib/less/lessecho.man
@@ -46,4 +46,4 @@ LESSECHO(1)                                                        LESSECHO(1)
 
 
 
-                           Version 409: 12 Oct 2007                LESSECHO(1)
+                           Version 415: 15 Nov 2007                LESSECHO(1)
diff --git a/contrib/less/lessecho.nro b/contrib/less/lessecho.nro
index d9dd628cb041..d31b83d05495 100644
--- a/contrib/less/lessecho.nro
+++ b/contrib/less/lessecho.nro
@@ -1,4 +1,4 @@
-.TH LESSECHO 1 "Version 409: 12 Oct 2007"
+.TH LESSECHO 1 "Version 415: 15 Nov 2007"
 .SH NAME
 lessecho \- expand metacharacters
 .SH SYNOPSIS
diff --git a/contrib/less/lesskey.man b/contrib/less/lesskey.man
index f951ea4e5c5c..8f77d55cda53 100644
--- a/contrib/less/lesskey.man
+++ b/contrib/less/lesskey.man
@@ -357,4 +357,4 @@ LESSKEY(1)                                                          LESSKEY(1)
 
 
 
-                           Version 409: 12 Oct 2007                 LESSKEY(1)
+                           Version 415: 15 Nov 2007                 LESSKEY(1)
diff --git a/contrib/less/lesskey.nro b/contrib/less/lesskey.nro
index afc358694300..a757bab7efad 100644
--- a/contrib/less/lesskey.nro
+++ b/contrib/less/lesskey.nro
@@ -1,4 +1,4 @@
-.TH LESSKEY 1 "Version 409: 12 Oct 2007"
+.TH LESSKEY 1 "Version 415: 15 Nov 2007"
 .SH NAME
 lesskey \- specify key bindings for less
 .SH SYNOPSIS
diff --git a/contrib/less/line.c b/contrib/less/line.c
index d61b87288dab..08ca3be594db 100644
--- a/contrib/less/line.c
+++ b/contrib/less/line.c
@@ -1046,6 +1046,23 @@ pdone(endline)
 		linebuf[curr] = '\n';
 		attr[curr] = AT_NORMAL;
 		curr++;
+	} 
+	else if (ignaw && !auto_wrap && column >= sc_width)
+	{
+		/*
+		 * Big horrible kludge.
+		 * No-wrap terminals are too hard to deal with when they get in
+		 * the state where a full screen width of characters have been 
+		 * output but the cursor is sitting on the right edge instead
+		 * of at the start of the next line.  
+		 * So after we output a full line, we output an extra 
+		 * space and backspace to force the cursor to the 
+		 * beginning of the next line, like a sane terminal.
+		 */
+		linebuf[curr] = ' '; 
+		attr[curr++] = AT_NORMAL;
+		linebuf[curr] = '\b'; 
+		attr[curr++] = AT_NORMAL;
 	}
 	linebuf[curr] = '\0';
 	attr[curr] = AT_NORMAL;
diff --git a/contrib/less/optfunc.c b/contrib/less/optfunc.c
index 4ca514297c95..f296b79368ab 100644
--- a/contrib/less/optfunc.c
+++ b/contrib/less/optfunc.c
@@ -442,7 +442,7 @@ opt__V(type, s)
 		any_display = 1;
 		putstr("less ");
 		putstr(version);
-		putstr("\nCopyright (C) 1984-2005 Mark Nudelman\n\n");
+		putstr("\nCopyright (C) 1984-2007 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/opttbl.c b/contrib/less/opttbl.c
index 2514463ea6e9..755a93d72ae6 100644
--- a/contrib/less/opttbl.c
+++ b/contrib/less/opttbl.c
@@ -50,7 +50,8 @@ public int shift_count;		/* Number of positions to shift horizontally */
 public int status_col;		/* Display a status column */
 public int use_lessopen;	/* Use the LESSOPEN filter */
 public int quit_on_intr;	/* Quit on interrupt */
-public int oldbot;		/* Old bottom of screen behavior */
+public int follow_mode;		/* F cmd Follows file desc or file name? */
+public int oldbot;		/* Old bottom of screen behavior {{REMOVE}} */
 #if HILITE_SEARCH
 public int hilite_search;	/* Highlight matched search patterns? */
 #endif
@@ -113,6 +114,7 @@ static struct optname query_optname  = { "help",                 NULL };
 static struct optname pound_optname  = { "shift",                NULL };
 static struct optname keypad_optname = { "no-keypad",            NULL };
 static struct optname oldbot_optname = { "old-bot",              NULL };
+static struct optname follow_optname = { "follow-name",          NULL };
 
 
 /*
@@ -440,6 +442,14 @@ static struct loption option[] =
 			NULL
 		}
 	},
+	{ '.', &follow_optname,
+		BOOL, FOLLOW_DESC, &follow_mode, NULL,
+		{
+			"F command Follows file descriptor",
+			"F command Follows file name",
+			NULL
+		}
+	},
 	{ '\0', NULL, NOVAR, 0, NULL, NULL, { NULL, NULL, NULL } }
 };
 
diff --git a/contrib/less/screen.c b/contrib/less/screen.c
index 51ab79980e53..8e3a0607c666 100644
--- a/contrib/less/screen.c
+++ b/contrib/less/screen.c
@@ -1845,11 +1845,15 @@ line_left()
 		row = scr.dwCursorPosition.Y - scr.srWindow.Top + 1;
 	}
 #else
+#if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC
+		row = wherey();
+#else
 	{
 		struct rccoord tpos = _gettextposition();
 		row = tpos.row;
 	}
 #endif
+#endif
 	_settextposition(row, 1);
 #endif
 }
diff --git a/contrib/less/search.c b/contrib/less/search.c
index 6104964ef98d..b983334c7d82 100644
--- a/contrib/less/search.c
+++ b/contrib/less/search.c
@@ -64,6 +64,7 @@ extern int screen_trashed;
 extern int size_linebuf;
 extern int squished;
 extern int can_goto_line;
+extern int utf_mode;
 static int hide_hilite;
 static int oldbot;
 static POSITION prep_startpos;
@@ -104,14 +105,31 @@ static int is_ucase_pattern;
 static int last_search_type;
 static char *last_pattern = NULL;
 
-/*
- * Convert text.  Perform one or more of these transformations:
- */
 #define	CVT_TO_LC	01	/* Convert upper-case to lower-case */
 #define	CVT_BS		02	/* Do backspace processing */
 #define	CVT_CRLF	04	/* Remove CR after LF */
 #define	CVT_ANSI	010	/* Remove ANSI escape sequences */
 
+/*
+ * Get the length of a buffer needed to convert a string.
+ */
+	static int
+cvt_length(len, ops)
+	int len;
+	int ops;
+{
+	if (utf_mode && (ops & CVT_TO_LC))
+		/*
+		 * Converting case can cause a UTF-8 string to increase in length.
+		 * Multiplying by 3 is the worst case.
+		 */
+		len *= 3;
+	return len+1;
+}
+
+/*
+ * Convert text.  Perform one or more of these transformations:
+ */
 	static void
 cvt_text(odst, osrc, lenp, ops)
 	char *odst;
@@ -138,7 +156,7 @@ cvt_text(odst, osrc, lenp, ops)
 			put_wchar(&dst, TO_LOWER(ch));
 		} else if ((ops & CVT_BS) && ch == '\b' && dst > odst)
 		{
-			/* Delete BS and preceding char. */
+			/* Delete backspace and preceding char. */
 			do {
 				dst--;
 			} while (dst > odst &&
@@ -361,7 +379,7 @@ undo_search()
  * Compile a search pattern, for future use by match_pattern.
  */
 	static int
-compile_pattern(pattern, search_type)
+compile_pattern2(pattern, search_type)
 	char *pattern;
 	int search_type;
 {
@@ -441,6 +459,30 @@ compile_pattern(pattern, search_type)
 }
 
 /*
+ * Like compile_pattern, but convert the pattern to lowercase if necessary.
+ */
+	static int
+compile_pattern(pattern, search_type)
+	char *pattern;
+	int search_type;
+{
+	char *cvt_pattern;
+	int result;
+
+	if (caseless != OPT_ONPLUS)
+		cvt_pattern = pattern;
+	else
+	{
+		cvt_pattern = (char*) ecalloc(1, cvt_length(strlen(pattern), CVT_TO_LC));
+		cvt_text(cvt_pattern, pattern, (int *)NULL, CVT_TO_LC);
+	}
+	result = compile_pattern2(cvt_pattern, search_type);
+	if (cvt_pattern != pattern)
+		free(cvt_pattern);
+	return (result);
+}
+
+/*
  * Forget that we have a compiled pattern.
  */
 	static void
@@ -679,35 +721,8 @@ add_hilite(anchor, hl)
 	ihl->hl_next = hl;
 }
 
-	static void
-adj_hilite_ansi(cvt_ops, line, line_len, npos)
-	int cvt_ops;
-	char **line;
-	int line_len;
-	POSITION *npos;
-{
-	char *line_end = *line + line_len;
-
-	if (cvt_ops & CVT_ANSI)
-		while (IS_CSI_START(**line))
-		{
-			/*
-			 * Found an ESC.  The file position moves
-			 * forward past the entire ANSI escape sequence.
-			 */
-			(*line)++;
-			(*npos)++;
-			while (*line < line_end)
-			{
-				(*npos)++;
-				if (!is_ansi_middle(*(*line)++))
-					break;
-			}
-		}
-}
-
 /*
- * Adjust hl_startpos & hl_endpos to account for backspace processing.
+ * Adjust hl_startpos & hl_endpos to account for processing by cvt_text.
  */
 	static void
 adj_hilite(anchor, linepos, cvt_ops)
@@ -716,18 +731,21 @@ adj_hilite(anchor, linepos, cvt_ops)
 	int cvt_ops;
 {
 	char *line;
+	char *oline;
 	int line_len;
 	char *line_end;
 	struct hilite *hl;
 	int checkstart;
 	POSITION opos;
 	POSITION npos;
+	LWCHAR ch;
+	int ncwidth;
 
 	/*
 	 * The line was already scanned and hilites were added (in hilite_line).
 	 * But it was assumed that each char position in the line 
 	 * correponds to one char position in the file.
-	 * This may not be true if there are backspaces in the line.
+	 * This may not be true if cvt_text modified the line.
 	 * Get the raw line again.  Look at each character.
 	 */
 	(void) forw_raw_line(linepos, &line, &line_len);
@@ -758,31 +776,43 @@ adj_hilite(anchor, linepos, cvt_ops)
 		}
 		if (line == line_end)
 			break;
-		adj_hilite_ansi(cvt_ops, &line, line_end - line, &npos);
-		opos++;
-		npos++;
-		line++;
-		if (cvt_ops & CVT_BS)
+
+		/* Get the next char from the line. */
+		oline = line;
+		ch = step_char(&line, +1, line_end);
+		ncwidth = line - oline;
+		npos += ncwidth;
+
+		/* Figure out how this char was processed by cvt_text. */
+		if ((cvt_ops & CVT_BS) && ch == '\b')
+		{
+			/* Skip the backspace and the following char. */
+			oline = line;
+			ch = step_char(&line, +1, line_end);
+			ncwidth = line - oline;
+			npos += ncwidth;
+		} else if ((cvt_ops & CVT_TO_LC) && IS_UPPER(ch))
+		{
+			/* Converted uppercase to lower.
+			 * Note that this may have changed the number of bytes 
+			 * that the character occupies. */
+			char dbuf[6];
+			char *dst = dbuf;
+			put_wchar(&dst, TO_LOWER(ch));
+			opos += dst - dbuf;
+		} else if ((cvt_ops & CVT_ANSI) && IS_CSI_START(ch))
 		{
-			while (*line == '\b')
+			/* Skip to end of ANSI escape sequence. */
+			while (line < line_end)
 			{
 				npos++;
-				line++;
-				adj_hilite_ansi(cvt_ops, &line, line_end - line, &npos);
-				if (line == line_end)
-				{
-					--npos;
-					--line;
+				if (!is_ansi_middle(*++line))
 					break;
-				}
-				/*
-				 * Found a backspace.  The file position moves
-				 * forward by 2 relative to the processed line
-				 * which was searched in hilite_line.
-				 */
-				npos++;
-				line++;
 			}
+		} else 
+		{
+			/* Ordinary unprocessed character. */
+			opos += ncwidth;
 		}
 	}
 }
@@ -1012,6 +1042,7 @@ search_range(pos, endpos, search_type, matches, maxlines, plinepos, pendpos)
 	POSITION *pendpos;
 {
 	char *line;
+	char *cline;
 	int line_len;
 	LINENUM linenum;
 	char *sp, *ep;
@@ -1097,18 +1128,22 @@ search_range(pos, endpos, search_type, matches, maxlines, plinepos, pendpos)
 		 * If we're doing backspace processing, delete backspaces.
 		 */
 		cvt_ops = get_cvt_ops();
-		cvt_text(line, line, &line_len, cvt_ops);
+		cline = calloc(1, cvt_length(line_len, cvt_ops));
+		cvt_text(cline, line, &line_len, cvt_ops);
 
 		/*
 		 * Test the next line to see if we have a match.
 		 * We are successful if we either want a match and got one,
 		 * or if we want a non-match and got one.
 		 */
-		line_match = match_pattern(line, line_len, &sp, &ep, 0);
+		line_match = match_pattern(cline, line_len, &sp, &ep, 0);
 		line_match = (!(search_type & SRCH_NO_MATCH) && line_match) ||
 				((search_type & SRCH_NO_MATCH) && !line_match);
 		if (!line_match)
+		{
+			free(cline);
 			continue;
+		}
 		/*
 		 * Got a match.
 		 */
@@ -1121,8 +1156,9 @@ search_range(pos, endpos, search_type, matches, maxlines, plinepos, pendpos)
 			 * hilite list and keep searching.
 			 */
 			if (line_match)
-				hilite_line(linepos, line, line_len, sp, ep, cvt_ops);
+				hilite_line(linepos, cline, line_len, sp, ep, cvt_ops);
 #endif
+			free(cline);
 		} else if (--matches <= 0)
 		{
 			/*
@@ -1138,9 +1174,10 @@ search_range(pos, endpos, search_type, matches, maxlines, plinepos, pendpos)
 				 */
 				clr_hilite();
 				if (line_match)
-					hilite_line(linepos, line, line_len, sp, ep, cvt_ops);
+					hilite_line(linepos, cline, line_len, sp, ep, cvt_ops);
 			}
 #endif
+			free(cline);
 			if (plinepos != NULL)
 				*plinepos = linepos;
 			return (0);
@@ -1163,9 +1200,6 @@ hist_pattern(search_type)
 	if (pattern == NULL)
 		return (0);
 
-	if (caseless == OPT_ONPLUS)
-		cvt_text(pattern, pattern, (int *)NULL, CVT_TO_LC);
-
 	if (compile_pattern(pattern, search_type) < 0)
 		return (0);
 
@@ -1202,7 +1236,7 @@ search(search_type, pattern, n)
 	int n;
 {
 	POSITION pos;
-	int ucase;
+	int result;
 
 	if (pattern == NULL || *pattern == '\0')
 	{
@@ -1245,16 +1279,13 @@ search(search_type, pattern, n)
 		/*
 		 * Compile the pattern.
 		 */
-		ucase = is_ucase(pattern);
-		if (caseless == OPT_ONPLUS)
-			cvt_text(pattern, pattern, (int *)NULL, CVT_TO_LC);
 		if (compile_pattern(pattern, search_type) < 0)
 			return (-1);
 		/*
 		 * Ignore case if -I is set OR
 		 * -i is set AND the pattern is all lowercase.
 		 */
-		is_ucase_pattern = ucase;
+		is_ucase_pattern = is_ucase(pattern);
 		if (is_ucase_pattern && caseless != OPT_ONPLUS)
 			is_caseless = 0;
 		else
diff --git a/contrib/less/tags.c b/contrib/less/tags.c
index b22fda8a28ed..ab00faf004d1 100644
--- a/contrib/less/tags.c
+++ b/contrib/less/tags.c
@@ -662,7 +662,7 @@ prevgtag()
 /*
  * Position the current file at at what is hopefully the tag that was chosen
  * using either findtag() or one of nextgtag() and prevgtag().  Returns -1
- * if it was unable to position at the tag, 0 if succesful.
+ * if it was unable to position at the tag, 0 if successful.
  */
 	static POSITION
 gtagsearch()
diff --git a/contrib/less/version.c b/contrib/less/version.c
index 1fce12e560b1..578dc55e07a6 100644
--- a/contrib/less/version.c
+++ b/contrib/less/version.c
@@ -696,6 +696,11 @@ v406  6/17/07	Fix secure build.
 v407  8/16/07	Fix bugs; support CSI chars.
 v408  10/1/07	Fix bug in -i with non-ASCII chars.
 v409  10/12/07	Fix crash when viewing text with invalid UTF-8 sequences.
+v411  11/6/07	Fix case-insensitive searching with non-ASCII text.
+v412  11/6/07	Use symbolic SEEK constants.
+v413  11/6/07	Fix search highlight bug with non-ASCII text.
+v414  11/6/07	Fix display bug with no-wrap terminals.
+v415  11/14/07	Add --follow-name option.
 */
 
-char version[] = "409";
+char version[] = "415";