Re: [PATCH] completion: do not cache if --git-completion-helper fails

[Felipe Contreras <felipe.contreras@gmail.com>]

On Wed, Jun 12, 2019 at 3:52 AM Duy Nguyen <pclouds@gmail.com> wrote:
>
> On Sat, Jun 8, 2019 at 12:33 AM Felipe Contreras
> <felipe.contreras@gmail.com> wrote:

> > Something like this should work:
> >
> > struct command checkout_command = {
> > .name = "checkout",
> > .function = cmd_checkout,
> > .run_options = RUN_SETUP | NEED_WORK_TREE,
> > .help = N_("Switch branches or restore working tree files"),
> > .options = {
> > OPT__QUIET(&opts.quiet, N_("suppress progress reporting")),
> > ...
> > },
> > }
> >
> > This way we could run parse_options_show_gitcomp() from git.c and not
> > worry about whatever cmd_checkout() needs.
>
> This only works for a few commands. Those with subcommands already
> have struct option[] array scattered in different places. And some new
> ones also have struct option array dynamically created.
>
> It's not impossible to do. But I feel there's a lot of reorganizing
> for little gain. Maybe when we pass 'struct repository *' to all
> commands, which means we hit all commmands at once anyway, we can
> reconsider this (and having config parser in a more declarative form
> like cmd option parser).

Well yes, there is little *functional* gain at the moment, but this
(or some version of this) must be done eventually.

For the moment we still have an issue, but I see there's already a
hack present for '-h', maybe we can re-utilize it. Something like
this:

--- a/git.c
+++ b/git.c
@@ -408,6 +408,8 @@ static int run_builtin(struct cmd_struct *p, int
argc, const char **argv)

        prefix = NULL;
        help = argc == 2 && !strcmp(argv[1], "-h");
+       if (!help)
+               help = argc == 2 && !strcmp(argv[1], "--git-completion-helper");
        if (!help) {
                if (p->option & RUN_SETUP)
                        prefix = setup_git_directory();

One way or the other, shouldn't my tests be merged? The issue is still
there, and it's nice to have tests for that.

-- 
Felipe Contreras