On Mon, Dec 17, 2012 at 3:40 PM, Junio C Hamano <gitster@xxxxxxxxx> wrote:
> Traditionally, %C(color attr) always emitted the ANSI color
> sequence; it was up to the scripts that wanted to conditionally
> color their output to omit %C(...) specifier when they do not want
> colors.
>
> Optionally allow "auto," to be prefixed to the color, so that the
> output is colored iff it goes to the terminal.
I see "prefix" is clearly documented. Still it feels a bit unnatural
that %C(red,auto) won't work. But we can make that case work later if
somebody cares enough.
> if (!end)
> return 0;
> - color_parse_mem(placeholder + 2,
> - end - (placeholder + 2),
> + if (!memcmp(begin, "auto,", 5)) {
> + if (!want_color(-1))
> + return end - placeholder + 1;
This want_color() checks color.ui and only when color.ui = auto, it
bothers to check if the output is tty. I think the document should say
that "auto," (or maybe another name because it's not really auto)
respects color.ui.
--
Duy
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