Hi Junio,
On Wed, 23 Nov 2016, Junio C Hamano wrote:
> Junio C Hamano <gitster@xxxxxxxxx> writes:
>
> > Can't you route the control upon seeing "git difftool" to your
> > experimental "C" difftool and check the configuration there? Then
> > you can decide to run_command() a non-builtin one depending what the
> > configuration says---that way, you would incur cost of spawning Perl
> > only when you need it, no?
>
> FWIW, the approach taken by 73c2779f42 ("builtin-am: implement
> skeletal builtin am", 2015-08-04) is what I had in mind when I wrote
> the above.
Maybe that worked back then. But I doubt it, because checking out that
revision, I get this "warning":
Makefile:1732: warning: overriding recipe for target 'git-am'
Makefile:1696: warning: ignoring old recipe for target 'git-am'
Seems like a matter of luck whether the `make` executable you happen to
use guesses what we want: to munge git-am.sh into git-am, as opposed to
hard-linking git to git-am.
Ciao,
Dscho