config: refactor get_colorbool function

For "git config --get-colorbool color.foo", we use a custom callback that looks not only for the key that the user gave us, but also for "diff.color" (for backwards compatibility) and "color.ui" (as a fallback). For the former, we use a custom variable to store the diff.color value. For the latter, though, we store it in the main "git_use_color_default" variable, turning on color.ui for any other parts of git that respect this value. In practice, this doesn't cause any bugs, because git-config runs without caring about git_use_color_default, and then exits. But it crosses module boundaries in an unusual and confusing way, and it makes refactoring color handling harder than it needs to be. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Jeff King committed Aug 17, 2011 at 22:04 UTC c659f55b31bb928688afd4ddfd94f8bea978ff1a
1 file changed +3 -2
builtin/config.c
+3 -2
@@ -305,6 +305,7 @@ static void get_color(const char *def_color)
305
306 static int get_colorbool_found;
307 static int get_diff_color_found;
308 +static int get_color_ui_found;
309 static int git_get_colorbool_config(const char *var, const char *value,
310 void *cb)
311 {
@@ -313,7 +314,7 @@ static int git_get_colorbool_config(const char *var, const char *value,
314 else if (!strcmp(var, "diff.color"))
315 get_diff_color_found = git_config_colorbool(var, value);
316 else if (!strcmp(var, "color.ui"))
316 - git_use_color_default = git_config_colorbool(var, value);
317 + get_color_ui_found = git_config_colorbool(var, value);
318 return 0;
319 }
320
@@ -327,7 +328,7 @@ static int get_colorbool(int print)
328 if (!strcmp(get_colorbool_slot, "color.diff"))
329 get_colorbool_found = get_diff_color_found;
330 if (get_colorbool_found < 0)
330 - get_colorbool_found = git_use_color_default;
331 + get_colorbool_found = get_color_ui_found;
332 }
333
334 get_colorbool_found = want_color(get_colorbool_found);