From 3f22f53d7d21cb66b6b8fb4f09067ed055d0d7f4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C5=82awomir=20Nizio?= <poczta-sn@gazeta.pl>
Date: Sun, 26 Jun 2011 01:01:40 +0200
Subject: [PATCH] Check return status of awk when adding an entry.

This will avoid truncating data file to zero length when disk is full.
---
 z.sh | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/z.sh b/z.sh
index 60b156b..c940a78 100755
--- a/z.sh
+++ b/z.sh
@@ -60,7 +60,9 @@ _z() {
     } else for( i in rank ) print i "|" rank[i] "|" time[i]
    }
   ' "$datafile" 2>/dev/null >| "$tempfile"
-  env mv -f "$tempfile" "$datafile"
+  if [ $? -eq 0 ]; then
+    env mv -f "$tempfile" "$datafile"
+  fi
 
  # tab completion
  elif [ "$1" = "--complete" ]; then