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authorUsman Akinyemi <usmanakinyemi202@gmail.com>2025-03-08 05:05:00 +0530
committerJunio C Hamano <gitster@pobox.com>2025-03-07 16:52:00 -0800
commitf29f1990b5605f8dbed65324d8e92b67d4dd1713 (patch)
tree79af710cfe1516c2b9cd53faac911f2369ce62e3
parente969bc875963a10890d61ba84eab3a460bd9e535 (diff)
downloadgit-f29f1990b5605f8dbed65324d8e92b67d4dd1713.tar.gz
config: teach repo_config to allow `repo` to be NULL
The `repo` value can be NULL if a builtin command is run outside any repository. The current implementation of `repo_config()` will fail if `repo` is NULL. If the `repo` is NULL the `repo_config()` can ignore the repository configuration but it should read the other configuration sources like the system-side configuration instead of failing. Teach the `repo_config()` to allow `repo` to be NULL by calling the `read_very_early_config()` which read config but only enumerate system and global settings. This will be useful in the following commits. Suggested-by: Junio C Hamano <gitster@pobox.com> Mentored-by: Christian Couder <chriscool@tuxfamily.org> Signed-off-by: Usman Akinyemi <usmanakinyemi202@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
-rw-r--r--config.c4
-rw-r--r--config.h9
2 files changed, 13 insertions, 0 deletions
diff --git a/config.c b/config.c
index dfd03b9421..f13a2870f1 100644
--- a/config.c
+++ b/config.c
@@ -2521,6 +2521,10 @@ void repo_config_clear(struct repository *repo)
void repo_config(struct repository *repo, config_fn_t fn, void *data)
{
+ if (!repo) {
+ read_very_early_config(fn, data);
+ return;
+ }
git_config_check_init(repo);
configset_iter(repo->config, fn, data);
}
diff --git a/config.h b/config.h
index 5c730c4f89..29a0277483 100644
--- a/config.h
+++ b/config.h
@@ -219,6 +219,15 @@ void read_very_early_config(config_fn_t cb, void *data);
* repo-specific one; by overwriting, the higher-priority repo-specific
* value is left at the end).
*
+ * In cases where the repository variable is NULL, repo_config() will
+ * skip the per-repository config but retain system and global configs
+ * by calling read_very_early_config() which also ignores one-time
+ * overrides like "git -c var=val". This is to support handling "git foo -h"
+ * (which lets git.c:run_builtin() to pass NULL and have the cmd_foo()
+ * call repo_config() before calling parse_options() to notice "-h", give
+ * help and exit) for a command that ordinarily require a repository
+ * so this limitation may be OK (but if needed you are welcome to fix it).
+ *
* Unlike git_config_from_file(), this function respects includes.
*/
void repo_config(struct repository *r, config_fn_t fn, void *);