[PATCH 11/15] color: check color.ui in git_default_config()
- From
Jeff King <peff@peff.net>
- Date
- Jul 13, 2017, 15:07 UTC
- Message-ID
- <20170713150703.phnuyezu5lwjtsdi@sigill.intra.peff.net>
- In-Reply-To
- <20170713145553.3epnsw23zajwg3ee@sigill.intra.peff.net>
Back in prehistoric times, our decision on whether or not to show color by default relied on using a config callback that either did or didn't load color config like color.diff. When we introduced color.ui, we put it in the same boat: commands had to manually respect it by using git_color_config() or its git_color_default_config() convenience wrapper.
But in 4c7f1819b (make color.ui default to 'auto', 2013-06-10), that changed. Since then, we default color.ui to auto in all programs, meaning that even plumbing commands like "git diff-tree --pretty" might colorize the output. Nobody seems to have complained in the intervening years, presumably because the "is stdout a tty" check does a good job of catching the right cases.
But that leaves an interesting curiosity: color.ui defaults to auto even in plumbing, but you can't actually _disable_ the color via config. So if you really hate color and set "color.ui" to false, diff-tree will still show color (but porcelain like git-diff won't). Nobody noticed that either, probably because very few people disable color.
One could argue that the plumbing should _always_ disable color unless an explicit --color option is given on the command line. But in practice, this creates a lot of complications for scripts which do want plumbing to show user-visible output. They can't just pass "--color" blindly; they need to check the user's config and decide what to send.
Given that nobody has complained about the current behavior, let's assume it's a good path, and follow it to its conclusion: supporting color.ui everywhere.
Note that you can create havoc by setting color.ui=always in your config, but that's more or less already the case. We could disallow it entirely, but it is handy for one-offs like:
git -c color.ui=always foo >not-a-tty
when "foo" does not take a --color option itself.
Signed-off-by: Jeff King <peff@peff.net> --- builtin/branch.c | 2 +- builtin/clean.c | 3 +-- builtin/grep.c | 2 +- builtin/show-branch.c | 2 +- color.c | 8 -------- config.c | 4 ++++ diff.c | 3 --- 7 files changed, 8 insertions(+), 16 deletions(-)
diff --git a/builtin/branch.c b/builtin/branch.c index 036fdc929..d852ded49 100644 --- a/builtin/branch.c +++ b/builtin/branch.c @@ -92,7 +92,7 @@ static int git_branch_config(const char *var, const char *value, void *cb) return config_error_nonbool(var); return color_parse(value, branch_colors[slot]); } - return git_color_default_config(var, value, cb); + return git_default_config(var, value, cb); } static const char *branch_get_color(enum color_branch ix) diff --git a/builtin/clean.c b/builtin/clean.c index 057fc97fe..c1bafda5b 100644 --- a/builtin/clean.c +++ b/builtin/clean.c @@ -125,8 +125,7 @@ static int git_clean_config(const char *var, const char *value, void *cb) return 0; } - /* inspect the color.ui config variable and others */ - return git_color_default_config(var, value, cb); + return git_default_config(var, value, cb); } static const char *clean_get_color(enum color_clean ix) diff --git a/builtin/grep.c b/builtin/grep.c index 0d6e66973..a7157f563 100644 --- a/builtin/grep.c +++ b/builtin/grep.c @@ -284,7 +284,7 @@ static int wait_all(void) static int grep_cmd_config(const char *var, const char *value, void *cb) { int st = grep_config(var, value, cb); - if (git_color_default_config(var, value, cb) < 0) + if (git_default_config(var, value, cb) < 0) st = -1; if (!strcmp(var, "grep.threads")) { diff --git a/builtin/show-branch.c b/builtin/show-branch.c index 7073a3eb9..28f245c8c 100644 --- a/builtin/show-branch.c +++ b/builtin/show-branch.c @@ -554,7 +554,7 @@ static int git_show_branch_config(const char *var, const char *value, void *cb) return 0; } - return git_color_default_config(var, value, cb); + return git_default_config(var, value, cb); } static int omit_in_dense(struct commit *commit, struct commit **rev, int n) diff --git a/color.c b/color.c index 31b6207a0..7aa8b076f 100644 --- a/color.c +++ b/color.c @@ -361,14 +361,6 @@ int git_color_config(const char *var, const char *value, void *cb) return 0; } -int git_color_default_config(const char *var, const char *value, void *cb) -{ - if (git_color_config(var, value, cb) < 0) - return -1; - - return git_default_config(var, value, cb); -} - void color_print_strbuf(FILE *fp, const char *color, const struct strbuf *sb) { if (*color) diff --git a/config.c b/config.c index a9356c138..bc290e756 100644 --- a/config.c +++ b/config.c @@ -16,6 +16,7 @@ #include "string-list.h" #include "utf8.h" #include "dir.h" +#include "color.h" struct config_source { struct config_source *prev; @@ -1350,6 +1351,9 @@ int git_default_config(const char *var, const char *value, void *dummy) if (starts_with(var, "advice.")) return git_default_advice_config(var, value); + if (git_color_config(var, value, dummy) < 0) + return -1; + if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) { pager_use_color = git_config_bool(var,value); return 0; diff --git a/diff.c b/diff.c index 85e714f6c..9c3825803 100644 --- a/diff.c +++ b/diff.c @@ -299,9 +299,6 @@ int git_diff_ui_config(const char *var, const char *value, void *cb) return 0; } - if (git_color_config(var, value, cb) < 0) - return -1; - return git_diff_basic_config(var, value, cb); }
-- 2.13.2.1157.gc6daca446