read_early_config(): avoid .git/config hack when unneeded

So far, we only look whether the startup_info claims to have seen a git_dir. However, do_git_config_sequence() (and consequently the git_config_with_options() call used by read_early_config() asks the have_git_dir() function whether we have a .git/ directory, which in turn also looks at git_dir and at the environment variable GIT_DIR. And when this is the case, the repository config is handled already, so we do not have to do that again explicitly. Let's just use the same function, have_git_dir(), to determine whether we have to handle .git/config explicitly. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Johannes Schindelin committed Mar 13, 2017 at 21:11 UTC 267b4538c0e13f98870bf808ee6c71fca9cf2ef7
1 file changed +3 -2
config.c
+3 -2
@@ -1427,14 +1427,15 @@ void read_early_config(config_fn_t cb, void *data)
1427 * core.repositoryformatversion), we'll read whatever is in .git/config
1428 * blindly. Similarly, if we _are_ in a repository, but not at the
1429 * root, we'll fail to find .git/config (because it's really
1430 - * ../.git/config, etc). See t7006 for a complete set of failures.
1430 + * ../.git/config, etc), unless setup_git_directory() was already called.
1431 + * See t7006 for a complete set of failures.
1432 *
1433 * However, we have historically provided this hack because it does
1434 * work some of the time (namely when you are at the top-level of a
1435 * valid repository), and would rarely make things worse (i.e., you do
1436 * not generally have a .git/config file sitting around).
1437 */
1437 - if (!startup_info->have_repository) {
1438 + if (!have_git_dir()) {
1439 struct git_config_source repo_config;
1440
1441 memset(&repo_config, 0, sizeof(repo_config));