Re: -inferior-tty-show and -inferior-tty-set

[Bob Rossi <bob@brasko.net>]

On Thu, Jul 14, 2005 at 10:57:13AM +1200, Nick Roberts wrote:
>  > OK. There could be a problem here. Not sure. A valid MI option is,
>  >  mi-command ==>
>  >   [ token ] "-" operation ( " " option )* [ " --" ] ( " " parameter )* nl
>  > basically, arguments to an mi function begin with a '-'. 
>  > 
>  > So,
>  >    (gdb)
>  >    -file-list-exec-source-file a
>  >    ^done,line="1",file="test.c",fullname="/home/bob/cvs/gdb/original/objdir/gdb/test.c"
>  >    (gdb)
>  >    -file-list-exec-source-file -a
>  >    &"mi_cmd_file_list_exec_source_file: Unknown option ``a''\n"
>  >    ^error,msg="mi_cmd_file_list_exec_source_file: Unknown option ``a''"
>  >    (gdb)
>  > 
>  > Should we make mi_valid_noargs take care of the case when invalid
>  > arguments are passed to the MI command? or should mi_getopt return an
>  > error? I'll have to think a little about this.
> 
> Instead of
> 
>   if ( !mi_valid_noargs("mi_cmd_file_list_exec_source_file", argc, argv) )
>     error (_("mi_cmd_file_list_exec_source_file: Usage: No args"));
> 
> why not just use:
> 
>   if (argc > 0)
>     error (_("mi_cmd_file_list_exec_source_file: Usage: No args"));
> 
> Incidentally there is no mention of mi_valid_noargs in the ChangeLogs.  If
> the above suggestion works, perhaps its not needed and it could be removed.

Hmmm, I added the mi_valid_noargs as one of my first GDB commits. Don't
know how it didn't get in the change log. 

I think everywhere that does "if (argc >0)" is broke. I could be wrong
about this though. Here is the reason that Andrew asked me to create
this function,
    http://sourceware.org/ml/gdb-patches/2003-04/msg00030.html

Thanks,
Bob Rossi