From c9ce15dc76a46f33c3ef0d1157824d2a36e27389 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Wed, 7 Jul 2010 14:09:50 +0100
Subject: [PATCH] remove stale caches; do not fail if we need to remake only
 cache symlink

---
 cgi-invoke | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/cgi-invoke b/cgi-invoke
index ea20307..cd46ce9 100755
--- a/cgi-invoke
+++ b/cgi-invoke
@@ -3,9 +3,12 @@ set -e
 exec with-lock-ex -w data/graph-lock sh -ec '
 	if ! test -d cache; then
 		quicksand-setup ||:
-		mkdir $GRAPH_CGI_CACHE
+		if ! test -d $GRAPH_CGI_CACHE; then mkdir $GRAPH_CGI_CACHE; fi
 		rm -f cache
 		ln -s $GRAPH_CGI_CACHE cache
 	fi
+        if test cgi -nt cache/.; then
+                rm -f cache/*
+        fi
 	./cgi "$@"
 ' x "$@"
-- 
2.30.2