Re: [RFA] "Help" command and completion

[Fernando Nasser <fnasser@redhat.com>]

Sorry folks, I just came back from vacations and I still have to catch
up with all the e-mail.   I saw this one by chance while searching for
another thing...

Yes, I agree 100% with you both. 

I suggest that to proper document how we got here, Michael should check
his patch first and then Eli checks his in. 

Regards to all and Happy New Year.

Fernando


Eli Zaretskii wrote:
> 
> On Tue, 8 Jan 2002, Michael Snyder wrote:
> 
> > Michael Snyder wrote:
> > >
> > > Eli Zaretskii wrote:
> > > >
> > > > How is no completion better than completion on symbols?
> > >
> > > Because the symbols in the program being debugged
> > > can't possibly have anything to do with gdb commands,
> > > and therefore can't possibly be valid arguments for "help".
> > > Not even if you're debugging gdb.
> >
> > OK to commit?
> 
> Personally, I'd rather have it complete on commands, like you said it
> should.  We already have the function to do that: complete_on_cmdlist,
> so it shouldn't be too hard to make that happen.
> 
> In fact, I just took a quick attempt on that; the patch is below.  It
> seems to work for me.  (The diffs are against stock GDB 5.1, since
> that's what I happen to have on the machine I have here.)
> 
> In any case, IIRC completion is Fernando's land, so I guess we need to
> wait for his word.
> 
> 2002-01-09  Eli Zaretskii  <eliz@is.elta.co.il>
> 
>         * completer.c (command_completer): New function.
> 
>         * completer.h <command_completer>: Add prototype.
> 
>         * cli/cli-cmds.c (init_cli_cmds): Make command_completer be the
>         completer for the "help" command.
> 
> --- gdb/completer.c~0   Sun Jul 15 21:17:46 2001
> +++ gdb/completer.c     Wed Jan  9 09:05:48 2002
> @@ -339,6 +339,14 @@ location_completer (char *text, char *wo
>    return list;
>  }
> 
> +/* Complete on command names.  Used by "help".  */
> +char **
> +command_completer (char *text, char *word)
> +{
> +  return complete_on_cmdlist (cmdlist, text, word);
> +}
> +
> +
>  /* Here are some useful test cases for completion.  FIXME: These should
>     be put in the test suite.  They should be tested with both M-? and TAB.
> 
> --- gdb/completer.h~0   Sun Jul 15 21:17:46 2001
> +++ gdb/completer.h     Wed Jan  9 08:52:50 2002
> @@ -29,6 +29,8 @@
> 
>  extern char **location_completer (char *, char *);
> 
> +extern char **command_completer (char *, char *);
> +
>  extern char *get_gdb_completer_word_break_characters (void);
> 
>  extern char *get_gdb_completer_quote_characters (void);
> --- gdb/cli/cli-cmds.c~0        Mon Jul 16 16:33:46 2001
> +++ gdb/cli/cli-cmds.c  Wed Jan  9 08:58:40 2002
> @@ -668,7 +668,8 @@ when gdb is started.", &cmdlist);
>    c->completer = filename_completer;
> 
>    add_com ("quit", class_support, quit_command, "Exit gdb.");
> -  add_com ("help", class_support, help_command, "Print list of commands.");
> +  c = add_com ("help", class_support, help_command, "Print list of commands.");
> +  c->completer = command_completer;
>    add_com_alias ("q", "quit", class_support, 1);
>    add_com_alias ("h", "help", class_support, 1);
> 

-- 
Fernando Nasser
Red Hat Canada Ltd.                     E-Mail:  fnasser@redhat.com
2323 Yonge Street, Suite #300
Toronto, Ontario   M4P 2C9