🚀 go-pugleaf

If emacs garbage-collects while executing describe-bindings, there's a good
chance that it ends in something like:
 wrong type argument: listp, <number>

I've tried the following patch in describe_map_tree.  Things seem better (but
it could be that other gcpro's are still needed).  One should also remove the
`register' for maps, as its address is taken (but gcc only gives a warning,
so..)

diff -c -r1.1 /usr/local/gnu/emacs/src/keymap.c
*** 1.1	1991/04/30 16:11:48
--- /usr/local/gnu/emacs/src/keymap.c	1991/04/30 16:14:48
***************
*** 908,915 ****
--- 908,917 ----
       int partial;
  {
    register Lisp_Object maps, elt, sh;
+   struct gcpro gcpro1;
  
    maps = Faccessible_keymaps (startmap);
+   GCPRO1 (maps);
  
    for (; !NULL (maps); maps = Fcdr (maps))
      {
***************
*** 929,934 ****
--- 931,937 ----
        if (NULL (sh) || !NULL (Fkeymapp (sh)))
  	describe_map (Fcdr (elt), Fcar (elt), partial, sh);
      }
+   UNGCPRO;
  }
  
  describe_command (definition)

Bruno.