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30 The following are treated as valid digraphs when used as a collating name:
33 "ae",
"Ae",
"AE",
"ch",
"Ch",
34 "CH",
"ll",
"Ll",
"LL",
"ss",
35 "Ss",
"SS",
"nj",
"Nj",
"NJ",
36 "dz",
"Dz",
"DZ",
"lj",
"Lj",
40 So for example the expression:
42 <pre class=
"programlisting">[[.ae.]-c]
</pre>
44 will match any character that collates between the digraph
"ae"
45 and the character
"c".
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