From: Christian Heller <c.heller@plomlompom.de>
Date: Mon, 2 Jan 2017 10:38:20 +0000 (+0100)
Subject: To feed generator, add handler for case of empty blog.
X-Git-Url: https://plomlompom.com/repos/%7B%7Bdb.prefix%7D%7D/%7B%7B%20web_path%20%7D%7D/decks?a=commitdiff_plain;h=cc2d161a6ef0700f6d08fd5c63314834a7264c28;p=redo-blog

To feed generator, add handler for case of empty blog.
---

diff --git a/processor/feed.xml.do b/processor/feed.xml.do
index 717fa89..0bc7318 100644
--- a/processor/feed.xml.do
+++ b/processor/feed.xml.do
@@ -47,7 +47,11 @@ for file in ./*.rst ./*.md; do
 done
 
 # Derive feed modification date from snippets.
-mod_dates=$(grep -hE "^<updated>" ./${metadata_dir}/*.feed_snippet | sed -E 's/<.?updated>//g')
+n_snippet_files=`ls -1 ./${metadata_dir}/*.feed_snippet 2>/dev/null | wc -l`
+if [ $n_snippet_files != 0 ]
+then
+  mod_dates=$(grep -hE "^<updated>" ./${metadata_dir}/*.feed_snippet | sed -E 's/<.?updated>//g')
+fi
 last_mod_unix=0
 for date in $mod_dates; do
   date_unix=$(date -u "+%s" -d "${date}")