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color: use GIT_COLOR_* instead of numeric constants

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Long ago Git's decision to show color for a subsytem was stored in a
tri-state variable: it could be true (1), false (0), or unknown (-1).
But since daa0c3d971 (color: delay auto-color decision until point of
use, 2011-08-17) we want to carry around a new state, "auto", which
bases the decision on the tty-ness of stdout (rather than collapsing
that "auto" state to a true/false immediately).

That commit introduced a set of GIT_COLOR_* defines to represent each
state: UNKNOWN, ALWAYS, NEVER, and AUTO. But it only used the AUTO
value, and left alone code using bare 0/1/-1 values. And of course since
then we've grown many new spots that use those bare values.

Let's switch all of these to use the named constants. That should make
the code a bit easier to read, as it is more obvious that we're
representing a color decision.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King
2025-09-16 16:13:28 -04:00
committed by Junio C Hamano
parent e335ff31f7
commit 3c3e9b8303
21 changed files with 42 additions and 40 deletions
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6
diff.c
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@@ -57,7 +57,7 @@ static int diff_detect_rename_default;
static int diff_indent_heuristic = 1;
static int diff_rename_limit_default = 1000;
static int diff_suppress_blank_empty;
static int diff_use_color_default = -1;
static int diff_use_color_default = GIT_COLOR_UNKNOWN;
static int diff_color_moved_default;
static int diff_color_moved_ws_default;
static int diff_context_default = 3;
@@ -5259,7 +5259,7 @@ static int diff_opt_color_words(const struct option *opt,
struct diff_options *options = opt->value;
BUG_ON_OPT_NEG(unset);
options->use_color = 1;
options->use_color = GIT_COLOR_ALWAYS;
options->word_diff = DIFF_WORDS_COLOR;
options->word_regex = arg;
return 0;
@@ -5581,7 +5581,7 @@ static int diff_opt_word_diff(const struct option *opt,
if (!strcmp(arg, "plain"))
options->word_diff = DIFF_WORDS_PLAIN;
else if (!strcmp(arg, "color")) {
options->use_color = 1;
options->use_color = GIT_COLOR_ALWAYS;
options->word_diff = DIFF_WORDS_COLOR;
}
else if (!strcmp(arg, "porcelain"))