bug#17659: 24.3.90; C-x 8 ? displays help instead of inserting INVERTED QUESTION MARK

[Stefan Monnier]

> The subject says it all: when I type C-x 8 ?, I expect emacs to insert
> into the buffer Unicode 191, INVERTED QUESTION MARK.  However, instead
> it displays a *Help* buffer whose first line reads

>         Key translations Starting With C-x 8:

I installed the patch below into emacs-24 which seems to fix this problem.


        Stefan


=== modified file 'src/keyboard.c'
--- src/keyboard.c      2014-05-06 16:16:57 +0000
+++ src/keyboard.c      2014-06-19 03:30:12 +0000
@@ -9384,16 +9385,6 @@
          first_unbound = min (t, first_unbound);
 
          head = EVENT_HEAD (key);
-         if (help_char_p (head) && t > 0)
-           {
-             read_key_sequence_cmd = Vprefix_help_command;
-             keybuf[t++] = key;
-             last_nonmenu_event = key;
-             /* The Microsoft C compiler can't handle the goto that
-                would go here.  */
-             dummyflag = 1;
-             break;
-           }
 
          if (SYMBOLP (head))
            {
@@ -9651,6 +9642,17 @@
 
          goto replay_sequence;
        }
+
+      if (NILP (current_binding)
+         && help_char_p (EVENT_HEAD (key)) && t > 1)
+           {
+             read_key_sequence_cmd = Vprefix_help_command;
+             /* The Microsoft C compiler can't handle the goto that
+                would go here.  */
+             dummyflag = 1;
+             break;
+           }
+
       /* If KEY is not defined in any of the keymaps,
         and cannot be part of a function key or translation,
         and is a shifted function key,