general improvements

diff --git a/protocol.c b/protocol.c
index 43012b7eb6e18bc48d93e6b96a3f3f57fe8ef79f..9741f057505d2041be1e8dbd49b444aaeab4bd82 100644 (file)
--- a/protocol.c
+++ b/protocol.c
@@ -8,6 +8,8 @@ static enum protocol_version parse_protocol_version(const char *value)
                return protocol_v0;
        else if (!strcmp(value, "1"))
                return protocol_v1;
+       else if (!strcmp(value, "2"))
+               return protocol_v2;
        else
                return protocol_unknown_version;
 }
@@ -15,6 +17,10 @@ static enum protocol_version parse_protocol_version(const char *value)
 enum protocol_version get_protocol_version_config(void)
 {
        const char *value;
+       enum protocol_version retval = protocol_v0;
+       const char *git_test_k = "GIT_TEST_PROTOCOL_VERSION";
+       const char *git_test_v = getenv(git_test_k);
+
        if (!git_config_get_string_const("protocol.version", &value)) {
                enum protocol_version version = parse_protocol_version(value);
 
@@ -22,10 +28,19 @@ enum protocol_version get_protocol_version_config(void)
                        die("unknown value for config 'protocol.version': %s",
                            value);
 
-               return version;
+               retval = version;
+       }
+
+       if (git_test_v && *git_test_v) {
+               enum protocol_version env = parse_protocol_version(git_test_v);
+
+               if (env == protocol_unknown_version)
+                       die("unknown value for %s: %s", git_test_k, git_test_v);
+               if (retval < env)
+                       retval = env;
        }
 
-       return protocol_v0;
+       return retval;
 }
 
 enum protocol_version determine_protocol_version_server(void)