Re: [PATCH] gc: make --prune useful again by accepting an optional parameter

diff --git a/Documentation/git-gc.txt b/Documentation/git-gc.txt
index 7086eea..fcef5fb 100644
--- a/Documentation/git-gc.txt
+++ b/Documentation/git-gc.txt

@@ -8,7 +8,7 @@ git-gc - Cleanup unnecessary files and optimize the local

repository

 SYNOPSIS
 --------
-'git gc' [--aggressive] [--auto] [--quiet]
+'git gc' [--aggressive] [--auto] [--quiet] [--prune=<date>]

 DESCRIPTION
 -----------

@@ -59,6 +59,13 @@ are consolidated into a single pack by using the `-A`

option of
 'git-repack'. Setting `gc.autopacklimit` to 0 disables
 automatic consolidation of packs.

+--prune=<date>::
+	Prune loose objects older than date (default is 2 weeks ago).
+	This option is on by default.

+
+--no-prune::
+	Do not prune any loose objects.
+
 --quiet::
 	Suppress all progress reports.

diff --git a/builtin-gc.c b/builtin-gc.c
index a201438..a962f38 100644
--- a/builtin-gc.c
+++ b/builtin-gc.c

[snip]

@@ -173,14 +174,15 @@ static int need_to_gc(void)

 int cmd_gc(int argc, const char **argv, const char *prefix)
 {
-	int prune = 0;
 	int aggressive = 0;
 	int auto_gc = 0;
 	int quiet = 0;
 	char buf[80];

 	struct option builtin_gc_options[] = {
-		OPT_BOOLEAN(0, "prune", &prune, "prune unreferenced objects

(deprecated)"),
+		{ OPTION_STRING, 0, "prune", &prune_expire, "date",
+			"prune unreferenced objects (deprecated)",