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@@ -322,6 +322,7 @@ EOcontent
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 }
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 function save_database () {
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+    test -n "$database" -a -n "$in_ram_database" || return
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     if test -r "$database" && md5sum $in_ram_database | sed "s,$in_ram_database,$database," | md5sum --status -c -; then
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         rm -f $in_ram_database
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     elif test -w "$database"; then