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/usr/share/idzebra-2.0/tab/string.chr is in idzebra-2.0-common 2.0.59-1ubuntu1.

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# Generic character map.
#

# Define the basic value-set. *Beware* of changing this without re-indexing
# your databases.

lowercase {0-9}{a-y}üzæäøöå
uppercase {0-9}{A-Y}ÜZÆÄØÖÅ

# Breaking characters

space {\001-\040}!"#$%&'\()*+,-./:;<=>?@\[\\]^_`\{|}~

# Characters to be considered equivalent for searching purposes.

# equivalent æä(ae)
# equivalent øö(oe)
# equivalent å(aa)
# equivalent uü

# Supplemental mappings

#map (&auml;)       ä
#map (&aelig;)      æ
#map (&oslash;)     ø
#map (&aring;)      å
#map (&ouml;)       ö
#map (&Auml;)       Ä
#map (&Aelig;)      Æ
#map (&Oslash;)     Ø
#map (&Aring;)      Å
#map (&Ouml;)       Ö

#map éÉ		e
#map á		a
#map ó		o
#map í		i

#map (Aa)	(AA)

#map (aa)        a