From 93808a0254055506918c278ea796508ede8a5075 Mon Sep 17 00:00:00 2001
From: Alexey Shpakovsky <alexey@shpakovsky.ru>
Date: Sat, 28 Jun 2014 17:17:30 +0200
Subject: [PATCH] don't invoke sed when no tag given

the bug was that sed was expecting file content on stdin when didn't receive
any filename, and script was "frozen" when someone tried to edit a post
without any tags.
---
 bb.sh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/bb.sh b/bb.sh
index 1694830..cb37fa0 100755
--- a/bb.sh
+++ b/bb.sh
@@ -784,6 +784,7 @@ tags_in_post() {
 # Arguments are tags
 # Prints one line with space-separated tags to stdout
 posts_with_tags() {
+    [ $# -lt 1 ] && return
     tag_files="$(echo "$@" | sed "s/\S\+/tag_&.html/g")"
     sed -n '/^<h3><a class="ablack" href="[^"]*">/{s/.*href="\([^"]*\)">.*/\1/;p}' $tag_files
 }