[PATCH 05/14] change how the CLI handles comments

[Doug Evans]

On Fri, May 16, 2014 at 8:26 AM, Tom Tromey <tromey@redhat.com> wrote:
> From: Phil Muldoon <pmuldoon@redhat.com>
>
> When using the multi-line feature, we don't want the gdb CLI to remove
> comments from the command list, as this will remove things like
> "#define".
>
> This patch moves the comment feature into command_loop to avoid this
> problem.
>
> 2014-05-16  Phil Muldoon  <pmuldoon@redhat.com>
>
>         * top.c (command_loop): Handle comments here...
>         (command_line_input): ... not here.
> ---
>  gdb/ChangeLog |  5 +++++
>  gdb/top.c     | 20 +++++++-------------
>  2 files changed, 12 insertions(+), 13 deletions(-)
>
> diff --git a/gdb/top.c b/gdb/top.c
> index fa20025..16694e6 100644
> --- a/gdb/top.c
> +++ b/gdb/top.c
> @@ -560,11 +560,14 @@ command_loop (void)
>
>        make_command_stats_cleanup (1);
>
> -      execute_command (command, instream == stdin);
> -
> -      /* Do any commands attached to breakpoint we are stopped at.  */
> -      bpstat_do_actions ();
> +      /* Do not execute commented lines.  */
> +      if (command[0] != '#')
> +       {
> +         execute_command (command, instream == stdin);
>
> +         /* Do any commands attached to breakpoint we are stopped at.  */
> +         bpstat_do_actions ();
> +       }
>        do_cleanups (old_chain);
>      }
>  }
> @@ -1057,15 +1060,6 @@ command_line_input (char *prompt_arg, int repeat, char *annotation_suffix)
>    if (*linebuffer && input_from_terminal_p ())
>      add_history (linebuffer);
>
> -  /* Note: lines consisting solely of comments are added to the command
> -     history.  This is useful when you type a command, and then
> -     realize you don't want to execute it quite yet.  You can comment
> -     out the command and then later fetch it from the value history
> -     and remove the '#'.  The kill ring is probably better, but some
> -     people are in the habit of commenting things out.  */
> -  if (*p1 == '#')
> -    *p1 = '\0';                        /* Found a comment.  */
> -
>    /* Save into global buffer if appropriate.  */
>    if (repeat)
>      {
> --
> 1.9.0
>

Hi.  I have an equivalent patch that I need for guile support.
E.g.,
guile
(foo
  #:bar 42)
end

Since this is really independent of the rest of the patch set,
can this be checked in right away?
TIA