diff --git a/tomb b/tomb
index c70319d..da0885c 100755
--- a/tomb
+++ b/tomb
@@ -1754,31 +1754,76 @@ index_tombs() {
 	    swishrc=`safe_filename swish`
 
 	    cat <<EOF > $swishrc
+# index directives
 DefaultContents TXT*
-FileFilter .pdf pdftotext "'%p' -"
+IndexDir $tombmount
+IndexFile $tombmount/.swish
+# exclude images
+FileRules filename regex /\.jp.?g/i
+FileRules filename regex /\.png/i
+FileRules filename regex /\.gif/i
+FileRules filename regex /\.tiff/i
+FileRules filename regex /\.svg/i
+FileRules filename regex /\.xcf/i
+FileRules filename regex /\.eps/i
+FileRules filename regex /\.ttf/i
+# exclude audio
+FileRules filename regex /\.mp3/i
+FileRules filename regex /\.ogg/i
+FileRules filename regex /\.wav/i
+FileRules filename regex /\.mod/i
+FileRules filename regex /\.xm/i
+# exclude video
+FileRules filename regex /\.mp4/i
+FileRules filename regex /\.avi/i
+FileRules filename regex /\.ogv/i
+FileRules filename regex /\.ogm/i
+FileRules filename regex /\.mkv/i
+FileRules filename regex /\.mov/i
+# exclude system
+FileRules filename is ok
+FileRules filename is lock
+FileRules filename is control
+FileRules filename is status
+FileRules filename is proc
+FileRules filename is sys
+FileRules filename is supervise
+FileRules filename regex /\.asc$/i
+FileRules filename regex /\.gpg$/i
 
-FileFilterMatch unoconv "-d spreadsheet -f csv --stdout %P" /\.xls.*/
-FileFilterMatch unoconv "-d spreadsheet -f csv --stdout %P" /\.xlt.*/
+# pdf and postscript
+FileFilter .pdf pdftotext "'%p' -"
+FileFilter .ps  ps2txt "'%p' -"
+# compressed files
+FileFilterMatch lesspipe "%p" /\.tgz$/i
+FileFilterMatch lesspipe "%p" /\.zip$/i
+FileFilterMatch lesspipe "%p" /\.gz$/i
+FileFilterMatch lesspipe "%p" /\.bz2$/i
+FileFilterMatch lesspipe "%p" /\.Z$/
+# spreadsheets
+FileFilterMatch unoconv "-d spreadsheet -f csv --stdout %P" /\.xls.*/i
+FileFilterMatch unoconv "-d spreadsheet -f csv --stdout %P" /\.xlt.*/i
 FileFilter .ods unoconv "-d spreadsheet -f csv --stdout %P"
 FileFilter .ots unoconv "-d spreadsheet -f csv --stdout %P"
 FileFilter .dbf unoconv "-d spreadsheet -f csv --stdout %P"
 FileFilter .dif unoconv "-d spreadsheet -f csv --stdout %P"
 FileFilter .uos unoconv "-d spreadsheet -f csv --stdout %P"
 FileFilter .sxc unoconv "-d spreadsheet -f csv --stdout %P"
-
-FileFilterMatch unoconv "-d document -f txt --stdout %P" /\.doc.*/
-FileFilterMatch unoconv "-d document -f txt --stdout %P" /\.odt.*/
-FileFilterMatch unoconv "-d document -f txt --stdout %P" /\.rtf.*/
-
+# word documents
+FileFilterMatch unoconv "-d document -f txt --stdout %P" /\.doc.*/i
+FileFilterMatch unoconv "-d document -f txt --stdout %P" /\.odt.*/i
+FileFilterMatch unoconv "-d document -f txt --stdout %P" /\.rtf.*/i
+FileFilterMatch unoconv "-d document -f txt --stdout %P" /\.tex$/i
+# native html support
 IndexContents HTML* .htm .html .shtml
 IndexContents XML*  .xml
-IndexDir $tombmount
-IndexFile $tombmount/.swish
 EOF
+
 	    xxx "Using swish-e to create index"
 	    swish-e -c $swishrc -S fs -v3
 	    rm -f $swishrc
 	}
+
 	say "search index updated"
     done
 }