unix — convert DOS or Mac ASCII text to Unix format


convert DOS or Mac ASCII newlines to Unix format.

Unix uses LF (Line feed: \n) sequence to identify a newline.

DOS uses CRLF (Carriage return/Line feed: \r\n) sequence to identify a newline.

Mac uses CR (Carriage return: \r) sequence to identify a newline.


Example: Filter example

[filter unix]Those pesky DOS characters, we can only be lucky that there are
none hiding in this text ;-)[/filter]


Example: Filter example

[filter unix]
  Input text with Unix newlines
  Input text with DOS newlines
  Input text with Max newlines



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


unix is available in Interchange versions:

4.6.0-5.9.0 (git-head)


Interchange 5.9.0:

Source: code/Filter/unix.filter
Lines: 19

# 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: unix.filter,v 1.4 2007-03-30 23:40:45 pajamian Exp $

CodeDef unix Filter
CodeDef unix Description DOS to UNIX newlines
CodeDef unix Routine <<EOR
sub {
my $val = shift;
$val =~ s/\r\n|\r/\n/g;
return $val;


Interchange Development Group


dos(7ic), mac(7ic), line(7ic)

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