Subject: [GSOC PATCH 1/2] mailmap: stop using the_repository

From: Burak Kaan Karaçay <[email-masked]>
Date: Thu, 19 Feb 2026 15:59:53 +0300

The 'read_mailmap' and 'read_mailmap_blob' functions rely on the global
'the_repository' variable. Update both functions to accept a
'struct repository' parameter.

Update all callers to pass 'the_repository' to retain the current
behavior.

Signed-off-by: Burak Kaan Karaçay <[email-masked]>
---
 builtin/blame.c         |  2 +-
 builtin/cat-file.c      |  2 +-
 builtin/check-mailmap.c |  4 ++--
 builtin/commit.c        |  2 +-
 builtin/log.c           |  2 +-
 builtin/shortlog.c      |  2 +-
 mailmap.c               | 11 ++++++-----
 mailmap.h               |  5 +++--
 pretty.c                |  2 +-
 ref-filter.c            |  2 +-
 10 files changed, 18 insertions(+), 16 deletions(-)

diff --git a/builtin/blame.c b/builtin/blame.c
index eac2fe7320..f3a11eff44 100644
--- a/builtin/blame.c
+++ b/builtin/blame.c
@@ -1252,7 +1252,7 @@ int cmd_blame(int argc,
 	sb.xdl_opts = xdl_opts;
 	sb.no_whole_file_rename = no_whole_file_rename;
 
-	read_mailmap(&mailmap);
+	read_mailmap(the_repository, &mailmap);
 
 	sb.found_guilty_entry = &found_guilty_entry;
 	sb.found_guilty_entry_data = &pi;
diff --git a/builtin/cat-file.c b/builtin/cat-file.c
index df8e87a81f..d298e95797 100644
--- a/builtin/cat-file.c
+++ b/builtin/cat-file.c
@@ -1105,7 +1105,7 @@ int cmd_cat_file(int argc,
 	opt_epts = (opt == 'e' || opt == 'p' || opt == 't' || opt == 's');
 
 	if (use_mailmap)
-		read_mailmap(&mailmap);
+		read_mailmap(the_repository, &mailmap);
 
 	switch (batch.objects_filter.choice) {
 	case LOFC_DISABLED:
diff --git a/builtin/check-mailmap.c b/builtin/check-mailmap.c
index 9cc5c59830..3f2a39cae0 100644
--- a/builtin/check-mailmap.c
+++ b/builtin/check-mailmap.c
@@ -63,9 +63,9 @@ int cmd_check_mailmap(int argc,
 	if (argc == 0 && !use_stdin)
 		die(_("no contacts specified"));
 
-	read_mailmap(&mailmap);
+	read_mailmap(the_repository, &mailmap);
 	if (mailmap_blob)
-		read_mailmap_blob(&mailmap, mailmap_blob);
+		read_mailmap_blob(the_repository, &mailmap, mailmap_blob);
 	if (mailmap_file)
 		read_mailmap_file(&mailmap, mailmap_file, 0);
 
diff --git a/builtin/commit.c b/builtin/commit.c
index 9e3a09d532..3700f66ba9 100644
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -1155,7 +1155,7 @@ static const char *find_author_by_nickname(const char *name)
 	setup_revisions(ac, av, &revs, NULL);
 	revs.mailmap = xmalloc(sizeof(struct string_list));
 	string_list_init_nodup(revs.mailmap);
-	read_mailmap(revs.mailmap);
+	read_mailmap(the_repository, revs.mailmap);
 
 	if (prepare_revision_walk(&revs))
 		die(_("revision walk setup failed"));
diff --git a/builtin/log.c b/builtin/log.c
index 8ab6d3a943..ff0227e32d 100644
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -336,7 +336,7 @@ static void cmd_log_init_finish(int argc, const char **argv, const char *prefix,
 	if (mailmap) {
 		rev->mailmap = xmalloc(sizeof(struct string_list));
 		string_list_init_nodup(rev->mailmap);
-		read_mailmap(rev->mailmap);
+		read_mailmap(the_repository, rev->mailmap);
 	}
 
 	if (rev->pretty_given && rev->commit_format == CMIT_FMT_RAW) {
diff --git a/builtin/shortlog.c b/builtin/shortlog.c
index d80bf1a7d0..6b2a0b93b5 100644
--- a/builtin/shortlog.c
+++ b/builtin/shortlog.c
@@ -357,7 +357,7 @@ void shortlog_init(struct shortlog *log)
 {
 	memset(log, 0, sizeof(*log));
 
-	read_mailmap(&log->mailmap);
+	read_mailmap(the_repository, &log->mailmap);
 
 	log->list.strdup_strings = 1;
 	log->wrap = DEFAULT_WRAPLEN;
diff --git a/mailmap.c b/mailmap.c
index 37fd158a51..6628975f30 100644
--- a/mailmap.c
+++ b/mailmap.c
@@ -183,7 +183,8 @@ static void read_mailmap_string(struct string_list *map, char *buf)
 	}
 }
 
-int read_mailmap_blob(struct string_list *map, const char *name)
+int read_mailmap_blob(struct repository *repo, struct string_list *map,
+                      const char *name)
 {
 	struct object_id oid;
 	char *buf;
@@ -192,10 +193,10 @@ int read_mailmap_blob(struct string_list *map, const char *name)
 
 	if (!name)
 		return 0;
-	if (repo_get_oid(the_repository, name, &oid) < 0)
+	if (repo_get_oid(repo, name, &oid) < 0)
 		return 0;
 
-	buf = odb_read_object(the_repository->objects, &oid, &type, &size);
+	buf = odb_read_object(repo->objects, &oid, &type, &size);
 	if (!buf)
 		return error("unable to read mailmap object at %s", name);
 	if (type != OBJ_BLOB) {
@@ -209,7 +210,7 @@ int read_mailmap_blob(struct string_list *map, const char *name)
 	return 0;
 }
 
-int read_mailmap(struct string_list *map)
+int read_mailmap(struct repository *repo, struct string_list *map)
 {
 	int err = 0;
 
@@ -224,7 +225,7 @@ int read_mailmap(struct string_list *map)
 					 startup_info->have_repository ?
 					 MAILMAP_NOFOLLOW : 0);
 	if (startup_info->have_repository)
-		err |= read_mailmap_blob(map, git_mailmap_blob);
+		err |= read_mailmap_blob(repo, map, git_mailmap_blob);
 	err |= read_mailmap_file(map, git_mailmap_file, 0);
 	return err;
 }
diff --git a/mailmap.h b/mailmap.h
index 908365e1bf..11346835cb 100644
--- a/mailmap.h
+++ b/mailmap.h
@@ -11,9 +11,10 @@ extern char *git_mailmap_blob;
 
 int read_mailmap_file(struct string_list *map, const char *filename,
 		      unsigned flags);
-int read_mailmap_blob(struct string_list *map, const char *name);
+int read_mailmap_blob(struct repository *repo, struct string_list *map,
+                      const char *name);
 
-int read_mailmap(struct string_list *map);
+int read_mailmap(struct repository *repo, struct string_list *map);
 void clear_mailmap(struct string_list *map);
 
 int map_user(struct string_list *map,
diff --git a/pretty.c b/pretty.c
index e0646bbc5d..ebf4da4834 100644
--- a/pretty.c
+++ b/pretty.c
@@ -781,7 +781,7 @@ static int mailmap_name(const char **email, size_t *email_len,
 	static struct string_list *mail_map;
 	if (!mail_map) {
 		CALLOC_ARRAY(mail_map, 1);
-		read_mailmap(mail_map);
+		read_mailmap(the_repository, mail_map);
 	}
 	return mail_map->nr && map_user(mail_map, email, email_len, name, name_len);
 }
diff --git a/ref-filter.c b/ref-filter.c
index 3917c4ccd9..d7a23a7b61 100644
--- a/ref-filter.c
+++ b/ref-filter.c
@@ -1753,7 +1753,7 @@ static void grab_person(const char *who, struct atom_value *val, int deref, void
 		    (starts_with(name + wholen, "email") &&
 		    (atom->u.email_option.option & EO_MAILMAP))) {
 			if (!mailmap.items)
-				read_mailmap(&mailmap);
+				read_mailmap(the_repository, &mailmap);
 			strbuf_addstr(&mailmap_buf, buf);
 			apply_mailmap_to_header(&mailmap_buf, headers, &mailmap);
 			wholine = find_wholine(who, wholen, mailmap_buf.buf);
-- 
2.52.0