test/send-email: --[no-]xmailer tests

diff --git a/config.c b/config.c
index 6cbf701a8f3e8837dac9c308cc19a1483114879d..9e42d3832bbcce428705ef616d5b2008c47ec91a 100644 (file)
--- a/config.c
+++ b/config.c
@@ -1236,10 +1236,15 @@ static struct {
 
 static int matches(const char *key, const char *value)
 {
-       return !strcmp(key, store.key) &&
-               (store.value_regex == NULL ||
-                (store.do_not_match ^
-                 !regexec(store.value_regex, value, 0, NULL, 0)));
+       if (strcmp(key, store.key))
+               return 0; /* not ours */
+       if (!store.value_regex)
+               return 1; /* always matches */
+       if (store.value_regex == CONFIG_REGEX_NONE)
+               return 0; /* never matches */
+
+       return store.do_not_match ^
+               (value && !regexec(store.value_regex, value, 0, NULL, 0));
 }
 
 static int store_aux(const char *key, const char *value, void *cb)
@@ -1501,6 +1506,8 @@ int git_config_parse_key(const char *key, char **store_key, int *baselen_)
 /*
  * If value==NULL, unset in (remove from) config,
  * if value_regex!=NULL, disregard key/value pairs where value does not match.
+ * if value_regex==CONFIG_REGEX_NONE, do not match any existing values
+ *     (only add a new one)
  * if multi_replace==0, nothing, or only one matching key/value is replaced,
  *     else all matching key/values (regardless how many) are removed,
  *     before the new pair is written.
@@ -1584,6 +1591,8 @@ int git_config_set_multivar_in_file(const char *config_filename,
 
                if (value_regex == NULL)
                        store.value_regex = NULL;
+               else if (value_regex == CONFIG_REGEX_NONE)
+                       store.value_regex = CONFIG_REGEX_NONE;
                else {
                        if (value_regex[0] == '!') {
                                store.do_not_match = 1;
@@ -1615,7 +1624,8 @@ int git_config_set_multivar_in_file(const char *config_filename,
                if (git_config_from_file(store_aux, config_filename, NULL)) {
                        error("invalid config file %s", config_filename);
                        free(store.key);
-                       if (store.value_regex != NULL) {
+                       if (store.value_regex != NULL &&
+                           store.value_regex != CONFIG_REGEX_NONE) {
                                regfree(store.value_regex);
                                free(store.value_regex);
                        }
@@ -1624,7 +1634,8 @@ int git_config_set_multivar_in_file(const char *config_filename,
                }
 
                free(store.key);
-               if (store.value_regex != NULL) {
+               if (store.value_regex != NULL &&
+                   store.value_regex != CONFIG_REGEX_NONE) {
                        regfree(store.value_regex);
                        free(store.value_regex);
                }