#
# new shopt `colonbreakswords'
# http://lists.gnu.org/archive/html/bug-bash/2004-10/msg00190.html
#
--- bashline.c.orig	Sat Nov  5 18:07:02 2005
+++ bashline.c	Wed Dec 28 19:44:28 2005
@@ -212,6 +212,11 @@
    host list. */
 int perform_hostname_completion = 1;
 
+/* If non-zero, we do hostname completion, breaking words at `@' and
+   trying to complete the stuff after the `@' from our own internal
+   host list. */
+int colon_is_wordbreak = 1;
+
 /* If non-zero, we don't do command completion on an empty line. */
 int no_empty_command_completion;
 
@@ -222,7 +227,8 @@
 
 static char *bash_completer_word_break_characters = " \t\n\"'@><=;|&(:";
 static char *bash_nohostname_word_break_characters = " \t\n\"'><=;|&(:";
-/* )) */
+static char *bash_nocolon_word_break_characters = " \t\n\"'@><=;|&(";
+/* ))) */
 
 static rl_hook_func_t *old_rl_startup_hook = (rl_hook_func_t *)NULL;
 
@@ -325,6 +331,80 @@
   return (old_value);
 }
 
+/* When this function returns, rl_completer_word_break_characters points to
+   dynamically allocated memory. */
+int
+enable_colon_wordbreak (on_or_off)
+     int on_or_off;
+{
+  int old_value;
+  char *at, *nv, *nval;
+
+  old_value = colon_is_wordbreak;
+
+  if (on_or_off)
+    {
+      colon_is_wordbreak = 1;
+      rl_filename_quote_characters = " \t\n\\\"'@<>=;|&()#$`?*[!:{";	/*}*/
+    }
+  else
+    {
+      colon_is_wordbreak = 0;
+      rl_filename_quote_characters = " \t\n\\\"'@<>=;|&()#$`?*[!{";	/*}*/
+    }
+
+  /* Now we need to figure out how to appropriately modify and assign
+     rl_completer_word_break_characters depending on whether we want
+     the colon to be a word break or not. */
+
+  /* If this is the first time this has been called
+     (bash_readline_initialized == 0), use the sames values as before, but
+     allocate new memory for rl_completer_word_break_characters. */
+
+  if (bash_readline_initialized == 0 &&
+      (rl_completer_word_break_characters == 0 || 
+       rl_completer_word_break_characters == rl_basic_word_break_characters))
+    {
+      if (on_or_off)
+	rl_completer_word_break_characters = savestring (bash_completer_word_break_characters);
+      else
+	rl_completer_word_break_characters = savestring (bash_nocolon_word_break_characters);
+    }
+  else
+    {
+      /* See if we have anything to do. */
+      at = strchr (rl_completer_word_break_characters, ':');
+      if ((at == 0 && on_or_off == 0) || (at != 0 && on_or_off != 0))
+        return old_value;
+
+      /* We have something to do.  Do it. */
+      nval = (char *)xmalloc (strlen (rl_completer_word_break_characters) + 1 + on_or_off);
+
+      if (on_or_off == 0)
+	{
+	  /* Turn it off -- just remove `:' from word break chars.  We want
+	     to remove all occurrences of `:' from the char list, so we loop
+	     rather than just copy the rest of the list over AT. */
+	  for (nv = nval, at = rl_completer_word_break_characters; *at; )
+	    if (*at != ':')
+	      *nv++ = *at++;
+	    else
+	      at++;
+	  *nv = '\0';
+	}
+      else
+	{
+	  nval[0] = ':';
+	  strcpy (nval + 1, rl_completer_word_break_characters);
+        }
+
+      free (rl_completer_word_break_characters);
+      rl_completer_word_break_characters = nval;
+    }
+
+  return (old_value);
+}
+
 /* Called once from parse.y if we are going to use readline. */
 void
 initialize_readline ()
@@ -485,8 +565,12 @@
      completion is enabled. */
   enable_hostname_completion (perform_hostname_completion);
 
+  /* This sets rl_completer_word_break_characters and rl_filename_quote_characters
+     to the appropriate values, depending on whether or not a colon
+     should break completion words or not. */
+  enable_colon_wordbreak (colon_is_wordbreak);
+
   /* characters that need to be quoted when appearing in filenames. */
-  rl_filename_quote_characters = " \t\n\\\"'@<>=;|&()#$`?*[!:{";	/*}*/
   rl_filename_quoting_function = bash_quote_filename;
   rl_filename_dequoting_function = bash_dequote_filename;
   rl_char_is_quoted_p = char_is_quoted;
--- builtins/shopt.def.orig	Wed Dec 28 19:38:09 2005
+++ builtins/shopt.def	Wed Dec 28 19:44:28 2005
@@ -83,6 +83,8 @@
 extern int hist_verify, history_reediting, perform_hostname_completion;
 extern int no_empty_command_completion;
 extern int force_fignore;
+extern int colon_is_wordbreak;
+extern int enable_colon_wordbreak __P((int));
 extern int enable_hostname_completion __P((int));
 #endif
 
@@ -121,6 +123,9 @@
   { "checkwinsize", &check_window_size, (shopt_set_func_t *)NULL },
 #if defined (HISTORY)
   { "cmdhist", &command_oriented_history, (shopt_set_func_t *)NULL },
+#endif
+#if defined (READLINE)
+  { "colonbreakswords", &colon_is_wordbreak, enable_colon_wordbreak },
 #endif
   { "dotglob", &glob_dot_filenames, (shopt_set_func_t *)NULL },
   { "execfail", &no_exit_on_failed_exec, (shopt_set_func_t *)NULL },
--- doc/bash.1.orig	Wed Dec 28 19:38:09 2005
+++ doc/bash.1	Wed Dec 28 19:44:28 2005
@@ -7972,6 +7972,18 @@
 command in the same history entry.  This allows
 easy re-editing of multi-line commands.
 .TP 8
+.B colonbreakswords
+If set, and
+.B readline
+is being used, \fBbash\fP will treat \fB:\fP as
+separating word being completed (see
+.B Completing
+under
+.SM
+.B READLINE
+above).
+This is enabled by default.
+.TP 8
 .B dotglob
 If set, 
 .B bash
--- doc/bashref.texi.orig	Wed Dec 28 19:38:09 2005
+++ doc/bashref.texi	Wed Dec 28 19:44:28 2005
@@ -3598,6 +3598,11 @@
 command in the same history entry.  This allows
 easy re-editing of multi-line commands.
 
+@item colonbreakswords
+If set, and Readline is being used, Bash will treat @samp{:} as
+separating word being completed (@pxref{Commands For Completion}).
+This option is enabled by default.
+
 @item dotglob
 If set, Bash includes filenames beginning with a `.' in
 the results of filename expansion.