Fix to enum variables

[Fernando Nasser <fnasser at cygnus dot com>]

I will be checking this in soon.

Andrew fixed this same problem for commands but I found that it also
happen with enums.

If we specify an enum value that is also a substring of another value
it is not recognized :-( 


2000-09-08  Fernando Nasser  <fnasser@totem.to.cygnus.com>

        * command.c (do_setshow_command): Make complete matches take
        precedence over incomplete ones for enum variables.


Index: command.c
===================================================================
RCS file: /cvs/cvsfiles/devo/gdb/command.c,v
retrieving revision 1.67
diff -c -p -r1.67 command.c
*** command.c   2000/05/01 04:46:47     1.67
--- command.c   2000/09/07 22:38:50
*************** do_setshow_command (arg, from_tty, c)
*** 1696,1706 ****
  
            nmatches = 0;
            for (i = 0; c->enums[i]; i++)
!             if (strncmp (arg, c->enums[i], len) == 0)
!               {
!                 match = c->enums[i];
!                 nmatches++;
!               }
  
            if (nmatches <= 0)
              error ("Undefined item: \"%s\".", arg);
--- 1696,1715 ----
  
            nmatches = 0;
            for (i = 0; c->enums[i]; i++)
!             {
!                 /* An exact match takes precedence. */
!               if (strcmp (arg, c->enums[i]) == 0)
!                 {
!                   match = c->enums[i];
!                   nmatches = 1;
!                   break;
!                 }
!               if (strncmp (arg, c->enums[i], len) == 0)
!                 {
!                   match = c->enums[i];
!                   nmatches++;
!                 }
!             }
  
            if (nmatches <= 0)
              error ("Undefined item: \"%s\".", arg);
-- 
Fernando Nasser
Red Hat Canada Ltd.                     E-Mail:  fnasser@cygnus.com