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Explain better what happens when [:lower:] <-> [:upper:]

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Andrey A. Chernov 2003-08-05 06:00:00 +00:00
parent a0c0836e7a
commit bc44c44a14
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=118460
1 changed files with 19 additions and 0 deletions
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@ -202,6 +202,25 @@ Class names are:
.\" and vice-versa) is specified in the same relative position in
.\" .Ar string1 .
.\" .Pp
When ``[:lower:]'' appears in
.Ar string1
and ``[:upper:]'' appears in the same relative position in
.Ar string2 ,
it represents the characters from the
.Dv toupper
mapping in the
.Ev LC_CTYPE
category of the current locale.
When ``[:upper:]'' appears in
.Ar string1
and ``[:lower:]'' appears in the same relative position in
.Ar string2 ,
it represents the characters from the
.Dv tolower
mapping in the
.Ev LC_CTYPE
category of the current locale.
.Pp
With the exception of the ``upper'' and ``lower'' classes, characters
in the classes are in unspecified order.
In the ``upper'' and ``lower'' classes, characters are entered in