1Text::Tabs(3)         User Contributed Perl Documentation        Text::Tabs(3)
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NAME

6       Text::Tabs - expand and unexpand tabs like unix expand(1) and
7       unexpand(1)
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SYNOPSIS

10         use Text::Tabs;
11
12         $tabstop = 4;  # default = 8
13         @lines_without_tabs = expand(@lines_with_tabs);
14         @lines_with_tabs = unexpand(@lines_without_tabs);
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DESCRIPTION

17       Text::Tabs does most of what the unix utilities expand(1) and
18       unexpand(1) do.  Given a line with tabs in it, "expand" replaces those
19       tabs with the appropriate number of spaces.  Given a line with or
20       without tabs in it, "unexpand" adds tabs when it can save bytes by
21       doing so, like the "unexpand -a" command.
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23       Unlike the old unix utilities, this module correctly accounts for any
24       Unicode combining characters (such as diacriticals) that may occur in
25       each line for both expansion and unexpansion.  These are overstrike
26       characters that do not increment the logical position.  Make sure you
27       have the appropriate Unicode settings enabled.
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EXPORTS

30       The following are exported:
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32       expand
33       unexpand
34       $tabstop
35           The $tabstop variable controls how many column positions apart each
36           tabstop is.  The default is 8.
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38           Please note that "local($tabstop)" doesn't do the right thing and
39           if you want to use "local" to override $tabstop, you need to use
40           "local($Text::Tabs::tabstop)".
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EXAMPLE

43         #!perl
44         # unexpand -a
45         use Text::Tabs;
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47         while (<>) {
48           print unexpand $_;
49         }
50
51       Instead of the shell's "expand" command, use:
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53         perl -MText::Tabs -n -e 'print expand $_'
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55       Instead of the shell's "unexpand -a" command, use:
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57         perl -MText::Tabs -n -e 'print unexpand $_'
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SUBVERSION

60       This module comes in two flavors: one for modern perls (5.10 and above)
61       and one for ancient obsolete perls.  The version for modern perls has
62       support for Unicode.  The version for old perls does not.  You can tell
63       which version you have installed by looking at $Text::Tabs::SUBVERSION:
64       it is "old" for obsolete perls and "modern" for current perls.
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66       This man page is for the version for modern perls and so that's
67       probably what you've got.
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BUGS

70       Text::Tabs handles only tabs ("\t") and combining characters ("/\pM/").
71       It doesn't count backwards for backspaces ("\t"), omit other non-
72       printing control characters ("/\pC/"), or otherwise deal with any other
73       zero-, half-, and full-width characters.
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LICENSE

76       Copyright (C) 1996-2002,2005,2006 David Muir Sharnoff.  Copyright (C)
77       2005 Aristotle Pagaltzis Copyright (C) 2012-2013 Google, Inc.  This
78       module may be modified, used, copied, and redistributed at your own
79       risk.  Although allowed by the preceding license, please do not
80       publicly redistribute modified versions of this code with the name
81       "Text::Tabs" unless it passes the unmodified Text::Tabs test suite.
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85perl v5.30.0                      2019-07-26                     Text::Tabs(3)
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