Fix setting config variables with an alternative GIT_CONFIG

diff --git a/config.c b/config.c
index d46eb6d8293766c2c188a1f89891329e4db06d93..37862d429f473d974a53d55315a23683d25aa3cb 100644 (file)
--- a/config.c
+++ b/config.c
@@ -500,10 +500,19 @@ int git_config_set_multivar(const char* key, const char* value,
        int i, dot;
        int fd = -1, in_fd;
        int ret;
-       char* config_filename = strdup(git_path("config"));
-       char* lock_file = strdup(git_path("config.lock"));
+       char* config_filename;
+       char* lock_file;
        const char* last_dot = strrchr(key, '.');
 
+       config_filename = getenv("GIT_CONFIG");
+       if (!config_filename) {
+               config_filename = getenv("GIT_CONFIG_LOCAL");
+               if (!config_filename)
+                       config_filename  = git_path("config");
+       }
+       config_filename = strdup(config_filename);
+       lock_file = strdup(mkpath("%s.lock", config_filename));
+
        /*
         * Since "key" actually contains the section name and the real
         * key name separated by a dot, we have to know where the dot is.
@@ -610,7 +619,7 @@ int git_config_set_multivar(const char* key, const char* value,
                 * As a side effect, we make sure to transform only a valid
                 * existing config file.
                 */
-               if (git_config(store_aux)) {
+               if (git_config_from_file(store_aux, config_filename)) {
                        fprintf(stderr, "invalid config file\n");
                        free(store.key);
                        if (store.value_regex != NULL) {