From 136c8c8b8fa39f1315713248473dececf20f8fe7 Mon Sep 17 00:00:00 2001 From: Jeff King Date: Thu, 13 Jul 2017 11:07:03 -0400 Subject: color: check color.ui in git_default_config() 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 Signed-off-by: Junio C Hamano --- config.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'config.c') 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; -- cgit v1.2.1