Re: [PATCH v3 1/6] alias.c: replace `git_config()` with `git_config_get_string()`

--- a/alias.c
+++ b/alias.c

@@ -1,26 +1,13 @@
 #include "cache.h"
 
-static const char *alias_key;
-static char *alias_val;
-
-static int alias_lookup_cb(const char *k, const char *v, void *cb)
-{
-	const char *name;
-	if (skip_prefix(k, "alias.", &name) && !strcmp(name, alias_key)) {
-		if (!v)
-			return config_error_nonbool(k);
-		alias_val = xstrdup(v);
-		return 0;
-	}
-	return 0;
-}
-
-char *alias_lookup(const char *alias)
+char *alias_lookup(const char* alias)