Re: [PATCH v2 1/3] pretty: add conditional %C?colorname placeholders

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Jeff King wrote:

> I am a little nervous that we would be breaking scripts that pipe the
> colorized output for later display to the user. Right now doing
> something like[1]:
> 
>   log=`git log --format=%Cred%h`
>   test "x$log" != x && echo "foo: $log"
> 
> colorizes, but we would be breaking it. And for new values like
> %C(diff.commit), we are not breaking anything (because it is a new
> syntax), but a script like the one above may want to convert, and there
> is no way to say "respect the color _config_, but don't respect
> isatty(1)". Saying "--color" doesn't work, because it overrides the
> color config. We can cheat a little with GIT_PAGER_IN_USE, but that will
> have funny interactions with pager.color.

Very interesting.  I think the natural solution (for new colors) would
be a --color=config option, which would require parsing options before
checking configuration.

Does this sound sane?

Jonathan
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