Name

alpha — eliminate non-alpha characters

DESCRIPTION

The filter eliminates any non-alpha characters (anything not in a-zA-Z range).

EXAMPLES

Example: Filter example

[filter alpha]** Test 1: Hello, World! **[/filter]

          

NOTES

For more information on Perl Regular Expressions, pattern matching and character classes, see perlre(1).

AVAILABILITY

alpha is available in Interchange versions:

4.6.0-5.7.0 (git-head)

SOURCE

Interchange 5.7.0:

Source: code/Filter/alpha.filter
Lines: 20


# Copyright 2002-2007 Interchange Development Group and others
# Copyright 1996-2002 Red Hat, Inc.
# 
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.  See the LICENSE file for details.
# 
# $Id: alpha.filter,v 1.7 2007-08-20 21:11:09 jon Exp $

CodeDef alpha Filter
CodeDef alpha Description A-Za-z only
CodeDef alpha Help  Returns only ASCII alphabetic characters (A-Z and a-z)
CodeDef alpha Routine <<EOR
sub {
my $val = shift;
$val =~ s/[^A-Za-z]+//g;
return $val;
}
EOR

AUTHORS

Interchange Development Group

SEE ALSO

alphanumeric(7ic)

DocBook! Interchange!