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authordkf <donal.k.fellows@manchester.ac.uk>2007-11-14 11:13:32 (GMT)
committerdkf <donal.k.fellows@manchester.ac.uk>2007-11-14 11:13:32 (GMT)
commitee7263e60a62d54b28a593d5e36927943222c9e2 (patch)
treef71025cbd9fdd5ddd3c3f7724d321f5c5e7739bc
parent45b2a969f63ab7f6184c8acaec8bb3d525650090 (diff)
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Strengthened the text about Tcl not supporting MCCEs
-rw-r--r--doc/re_syntax.n16
1 files changed, 8 insertions, 8 deletions
diff --git a/doc/re_syntax.n b/doc/re_syntax.n
index 888aede..eebda51 100644
--- a/doc/re_syntax.n
+++ b/doc/re_syntax.n
@@ -5,7 +5,7 @@
'\" See the file "license.terms" for information on usage and redistribution
'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
'\"
-'\" RCS: @(#) $Id: re_syntax.n,v 1.14 2007/10/29 10:07:05 dkf Exp $
+'\" RCS: @(#) $Id: re_syntax.n,v 1.15 2007/11/14 11:13:32 dkf Exp $
'\"
.so man.macros
.TH re_syntax n "8.1" Tcl "Tcl Built-In Commands"
@@ -173,9 +173,9 @@ If two characters in the list are separated by
this is shorthand for the full \fIrange\fR of characters between those two
(inclusive) in the collating sequence, e.g. \fB[0\-9]\fR in Unicode
matches any conventional decimal digit. Two ranges may not share an
-endpoint, so e.g. \fBa\-c\-e\fR is illegal. Ranges are very
-collating-sequence-dependent, and portable programs should avoid
-relying on them.
+endpoint, so e.g. \fBa\-c\-e\fR is illegal. Ranges in Tcl always use the
+Unicode collating sequence, but other programs may use other collating
+sequences and this can be a source of incompatability between programs.
.PP
To include a literal \fB]\fR or \fB\-\fR in the list, the simplest
method is to enclose it in \fB[.\fR and \fB.]\fR to make it a
@@ -204,7 +204,7 @@ expression's list. A bracket expression in a locale that has
multi-character collating elements can thus match more than one
character. So (insidiously), a bracket expression that starts with
\fB^\fR can match multi-character collating elements even if none of
-them appear in the bracket expression! (\fINote:\fR Tcl currently has
+them appear in the bracket expression! (\fINote:\fR Tcl has
no multi-character collating elements. This information is only for
illustration.)
.PP
@@ -232,9 +232,9 @@ equivalence class, then
and
.QW \fB[o\N'244']\fR \&
are all synonymous. An equivalence class may
-not be an endpoint of a range. (\fINote:\fR Tcl currently implements
-only the Unicode locale. It does not define any equivalence classes.
-The examples above are just illustrations.)
+not be an endpoint of a range. (\fINote:\fR Tcl implements only the
+Unicode locale. It does not define any equivalence classes. The
+examples above are just illustrations.)
.PP
Within a bracket expression, the name of a \fIcharacter class\fR
enclosed in \fB[:\fR and \fB:]\fR stands for the list of all