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Top Forums Shell Programming and Scripting Question on TCL regexp and match Post 302739695 by mar85 on Tuesday 4th of December 2012 06:29:10 PM
Old 12-04-2012
Question on TCL regexp and match

Hello everyone,
I'm new in tcl scripting.
I'm currently studying a tcl script and came across this line:

regexp {(\d+)(\S?)} $opts match opt swi

According to my understanding, this line means to search in the opts variable for one or more digit, followed by a non-whitespace character (if the non-whitespace character exists). The matched pattern will then copied into the opt variable.

Is my understanding is correct?
How about the swi? What does it do?

Please help. Thanks
 

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PPI::Token::Regexp::Match(3)				User Contributed Perl Documentation			      PPI::Token::Regexp::Match(3)

NAME
PPI::Token::Regexp::Match - A standard pattern match regex INHERITANCE
PPI::Token::Regexp::Match isa PPI::Token::Regexp isa PPI::Token isa PPI::Element SYNOPSIS
$text =~ m/match regexp/; $text =~ /match regexp/; DESCRIPTION
A "PPI::Token::Regexp::Match" object represents a single match regular expression. Just to be doubly clear, here are things that are and aren't considered a match regexp. # Is a match regexp /This is a match regexp/; m/Old McDonald had a farm/eieio; # These are NOT match regexp qr/This is a regexp quote-like operator/; s/This is a/replace regexp/; METHODS
There are no methods available for "PPI::Token::Regexp::Match" beyond those provided by the parent PPI::Token::Regexp, PPI::Token and PPI::Element classes. Got any ideas for methods? Submit a report to rt.cpan.org! SUPPORT
See the support section in the main module. AUTHOR
Adam Kennedy <adamk@cpan.org> COPYRIGHT
Copyright 2001 - 2011 Adam Kennedy. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The full text of the license can be found in the LICENSE file included with this module. perl v5.16.2 2011-02-25 PPI::Token::Regexp::Match(3)
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