[PATCH] git.c: make autocorrected aliases work

["Adeodato Simó" <dato@net.com.org.es>]

help_unknown_cmd() is able to autocorrect a command to an alias, and not
only to internal or external commands. However, main() was not passing the
autocorrected command through handle_alias(), hence it failed if it was an
alias.

This commit makes the autocorrected command go through handle_alias, once
handle_internal_command() and execv_dashed_external() have been tried. Since
this is done twice in main() now, moved that logic to a new run_argv()
function.

Signed-off-by: Adeodato Simó <dato@net.com.org.es>
---
 git.c |   46 +++++++++++++++++++++++++++-------------------
 1 files changed, 27 insertions(+), 19 deletions(-)

diff --git a/git.c b/git.c
index e0d9071..f443b4c 100644
--- a/git.c
+++ b/git.c
@@ -416,12 +416,35 @@ static void execv_dashed_external(const char **argv)
 	strbuf_release(&cmd);
 }
 
+static int run_argv(int *argcp, const char ***argv)
+{
+	int done_alias = 0;
+
+	while (1) {
+		/* See if it's an internal command */
+		handle_internal_command(*argcp, *argv);
+
+		/* .. then try the external ones */
+		execv_dashed_external(*argv);
+
+		/* It could be an alias -- this works around the insanity
+		 * of overriding "git log" with "git show" by having
+		 * alias.log = show
+		 */
+		if (done_alias || !handle_alias(argcp, argv))
+			break;
+		done_alias = 1;
+	}
+
+	return done_alias;
+}
+
 
 int main(int argc, const char **argv)
 {
 	const char *cmd = argv[0] && *argv[0] ? argv[0] : "git-help";
 	char *slash = (char *)cmd + strlen(cmd);
-	int done_alias = 0;
+	int was_alias = 0;
 
 	/*
 	 * Take the basename of argv[0] as the command
@@ -478,32 +501,17 @@ int main(int argc, const char **argv)
 	 */
 	setup_path();
 
-	while (1) {
-		/* See if it's an internal command */
-		handle_internal_command(argc, argv);
-
-		/* .. then try the external ones */
-		execv_dashed_external(argv);
-
-		/* It could be an alias -- this works around the insanity
-		 * of overriding "git log" with "git show" by having
-		 * alias.log = show
-		 */
-		if (done_alias || !handle_alias(&argc, &argv))
-			break;
-		done_alias = 1;
-	}
+	was_alias = run_argv(&argc, &argv);
 
 	if (errno == ENOENT) {
-		if (done_alias) {
+		if (was_alias) {
 			fprintf(stderr, "Expansion of alias '%s' failed; "
 				"'%s' is not a git-command\n",
 				cmd, argv[0]);
 			exit(1);
 		}
 		argv[0] = help_unknown_cmd(cmd);
-		handle_internal_command(argc, argv);
-		execv_dashed_external(argv);
+		run_argv(&argc, &argv);
 	}
 
 	fprintf(stderr, "Failed to run command '%s': %s\n",
-- 
1.6.1.62.g677ca