config: add options parameter to git_config_from_mem

The underlying config parser knows how to handle a
config_options struct, but git_config_from_mem() always
passes NULL. Let's allow our callers to specify the options
struct.

We could add a "_with_options" variant, but since there are
only a handful of callers, let's just update them to pass
NULL.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

config.c

@@ -1569,8 +1569,10 @@ int git_config_from_file(config_fn_t fn, const char *filename, void *data)
 	return git_config_from_file_with_options(fn, filename, data, NULL);
 }
 
-int git_config_from_mem(config_fn_t fn, const enum config_origin_type origin_type,
-			const char *name, const char *buf, size_t len, void *data)
+int git_config_from_mem(config_fn_t fn,
+			const enum config_origin_type origin_type,
+			const char *name, const char *buf, size_t len,
+			void *data, const struct config_options *opts)
 {
 	struct config_source top;
 
@@ -1585,7 +1587,7 @@ int git_config_from_mem(config_fn_t fn, const enum config_origin_type origin_typ
 	top.do_ungetc = config_buf_ungetc;
 	top.do_ftell = config_buf_ftell;
 
-	return do_config_from(&top, fn, data, NULL);
+	return do_config_from(&top, fn, data, opts);
 }
 
 int git_config_from_blob_oid(config_fn_t fn,
@@ -1606,7 +1608,8 @@ int git_config_from_blob_oid(config_fn_t fn,
 		return error("reference '%s' does not point to a blob", name);
 	}
 
-	ret = git_config_from_mem(fn, CONFIG_ORIGIN_BLOB, name, buf, size, data);
+	ret = git_config_from_mem(fn, CONFIG_ORIGIN_BLOB, name, buf, size,
+				  data, NULL);
 	free(buf);
 
 	return ret;

config.h

@@ -68,8 +68,11 @@ extern int git_config_from_file(config_fn_t fn, const char *, void *);
 extern int git_config_from_file_with_options(config_fn_t fn, const char *,
 					     void *,
 					     const struct config_options *);
-extern int git_config_from_mem(config_fn_t fn, const enum config_origin_type,
-					const char *name, const char *buf, size_t len, void *data);
+extern int git_config_from_mem(config_fn_t fn,
+			       const enum config_origin_type,
+			       const char *name,
+			       const char *buf, size_t len,
+			       void *data, const struct config_options *opts);
 extern int git_config_from_blob_oid(config_fn_t fn, const char *name,
 				    const struct object_id *oid, void *data);
 extern void git_config_push_parameter(const char *text);

fsck.c

@@ -1012,7 +1012,7 @@ static int fsck_blob(struct blob *blob, const char *buf,
 	data.options = options;
 	data.ret = 0;
 	if (git_config_from_mem(fsck_gitmodules_fn, CONFIG_ORIGIN_BLOB,
-				".gitmodules", buf, size, &data))
+				".gitmodules", buf, size, &data, NULL))
 		data.ret |= report(options, &blob->object,
 				   FSCK_MSG_GITMODULES_PARSE,
 				   "could not parse gitmodules blob");

submodule-config.c

@@ -561,7 +561,7 @@ static const struct submodule *config_from(struct submodule_cache *cache,
 	parameter.gitmodules_oid = &oid;
 	parameter.overwrite = 0;
 	git_config_from_mem(parse_config, CONFIG_ORIGIN_SUBMODULE_BLOB, rev.buf,
-			config, config_size, &parameter);
+			config, config_size, &parameter, NULL);
 	strbuf_release(&rev);
 	free(config);