[PATCH] Make gc a builtin.

@@ -177,7 +177,7 @@ BASIC_LDFLAGS =
 SCRIPT_SH = \
 	git-bisect.sh git-checkout.sh \
 	git-clean.sh git-clone.sh git-commit.sh \
-	git-fetch.sh git-gc.sh \
+	git-fetch.sh \
 	git-ls-remote.sh \
 	git-merge-one-file.sh git-parse-remote.sh \
 	git-pull.sh git-rebase.sh \

@@ -297,6 +297,7 @@ BUILTIN_OBJS = \
 	builtin-fmt-merge-msg.o \
 	builtin-for-each-ref.o \
 	builtin-fsck.o \
+	builtin-gc.o \
 	builtin-grep.o \
 	builtin-init-db.o \
 	builtin-log.o \

@@ -0,0 +1,78 @@
+/*
+ * git gc builtin command
+ *
+ * Cleanup unreachable files and optimize the repository.
+ *
+ * Copyright (c) 2007 James Bowes
+ *
+ * Based on git-gc.sh, which is
+ *
+ * Copyright (c) 2006 Shawn O. Pearce
+ */
+
+#include "cache.h"
+#include "run-command.h"
+
+static const char builtin_gc_usage[] = "git-gc [--prune]";
+
+static int pack_refs;
+
+static const char *argv_pack_refs[] = {"pack-refs", "--prune", NULL};
+static const char *argv_reflog[] = {"reflog", "expire", "--all", NULL};
+static const char *argv_repack[] = {"repack", "-a", "-d", "-l", NULL};
+static const char *argv_prune[] = {"prune", NULL};
+static const char *argv_rerere[] = {"rerere", "gc", NULL};
+
+static int gc_config(const char *var, const char *value)
+{
+	if (!strcmp(var, "gc.packrefs"))
+		if (strlen(value) == 0 || !strcmp(value, "notbare"))
+			pack_refs = !is_bare_repository();
+		else
+			pack_refs = git_config_bool(var, value);
+	else
+		return git_default_config(var, value);
+	return 0;
+}
+
+int cmd_gc(int argc, const char **argv, const char *prefix)
+{
+	int i;
+	int prune = 0;
+
+	git_config(gc_config);
+
+	for (i = 1; i < argc; i++) {
+		const char *arg = argv[i];
+		if (!strcmp(arg, "--prune")) {
+			prune = 1;
+			continue;
+		}
+		/* perhaps other parameters later... */
+		break;
+	}
+	if (i != argc)
+		usage(builtin_gc_usage);
+
+    if (pack_refs)
+	    if (run_command_v_opt(argv_pack_refs, RUN_GIT_CMD))
+            goto failure;
+
+    if (run_command_v_opt(argv_reflog, RUN_GIT_CMD))
+        goto failure;
+
+    if (run_command_v_opt(argv_repack, RUN_GIT_CMD))
+        goto failure;
+
+    if (prune)
+        if (run_command_v_opt(argv_prune, RUN_GIT_CMD))
+            goto failure;
+
+    if (run_command_v_opt(argv_rerere, RUN_GIT_CMD))
+        goto failure;
+
+    return 0;
+
+failure:
+    return -1;
+}

@@ -37,6 +37,7 @@ extern int cmd_fmt_merge_msg(int argc, const char

@@ -1,37 +0,0 @@
-#!/bin/sh
-#
-# Copyright (c) 2006, Shawn O. Pearce
-#
-# Cleanup unreachable files and optimize the repository.
-
-USAGE='[--prune]'
-SUBDIRECTORY_OK=Yes
-. git-sh-setup
-
-no_prune=:
-while case $# in 0) break ;; esac
-do
-	case "$1" in
-	--prune)
-		no_prune=
-		;;
-	--)
-		usage
-		;;
-	esac
-	shift
-done
-
-case "$(git config --get gc.packrefs)" in
-notbare|"")
-	test $(is_bare_repository) = true || pack_refs=true;;
-*)
-	pack_refs=$(git config --bool --get gc.packrefs)
-esac
-
-test "true" != "$pack_refs" ||
-git-pack-refs --prune &&
-git-reflog expire --all &&
-git-repack -a -d -l &&
-$no_prune git-prune &&
-git-rerere gc || exit

@@ -249,6 +249,7 @@ static void handle_internal_command(int argc,