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-rw-r--r--zet.tlv6
1 files changed, 4 insertions, 2 deletions
diff --git a/zet.tlv b/zet.tlv
index 4841649..5d21b41 100644
--- a/zet.tlv
+++ b/zet.tlv
@@ -1414,8 +1414,10 @@
     >    -- until last possible second
     >    local filename = os.tmpname()
     >    local outfile = io.open(filename, 'w')
-    >    write_zettels(outfile)
-    >    os.rename(filename, 'zet')
+    >    if outfile then
+    >      write_zettels(outfile)
+    >      os.rename(filename, 'zet')
+    >    end
     >  end
     >end
 - __teliva_timestamp: