Add max-completions parameter, and implement tab-completion limiting.

[deliverable/binutils-gdb.git] / gdb / cli / cli-cmds.c

diff --git a/gdb/cli/cli-cmds.c b/gdb/cli/cli-cmds.c
index e20d8dd1a27c017f5b30c7cfa6b069ff513e6d69..e46f0362cfb534bd898507a6e8eebeeaaeb549d9 100644 (file)
--- a/gdb/cli/cli-cmds.c
+++ b/gdb/cli/cli-cmds.c
@@ -236,7 +236,8 @@ help_command (char *command, int from_tty)
   help_cmd (command, gdb_stdout);
 }
 \f
-/* The "complete" command is used by Emacs to implement completion.  */
+/* Note: The "complete" command is used by Emacs to implement completion.
+   [Is that why this function writes output with *_unfiltered?]  */
 
 static void
 complete_command (char *arg, int from_tty)
@@ -247,6 +248,18 @@ complete_command (char *arg, int from_tty)
 
   dont_repeat ();
 
+  if (max_completions == 0)
+    {
+      /* Only print this for non-mi frontends.  An MI frontend may not
+        be able to handle this.  */
+      if (!ui_out_is_mi_like_p (current_uiout))
+       {
+         printf_unfiltered (_("max-completions is zero,"
+                              " completion is disabled.\n"));
+       }
+      return;
+    }
+
   if (arg == NULL)
     arg = "";
   argpoint = strlen (arg);
@@ -293,6 +306,15 @@ complete_command (char *arg, int from_tty)
 
       xfree (prev);
       VEC_free (char_ptr, completions);
+
+      if (size == max_completions)
+       {
+         /* ARG_PREFIX and POINT are included in the output so that emacs
+            will include the message in the output.  */
+         printf_unfiltered (_("%s%s %s\n"),
+                            arg_prefix, point,
+                            get_max_completions_reached_message ());
+       }
     }
 }