Re: Regex to match multiple words in an email subject

#!/usr/bin/perl

use warnings;
use strict;

for (<DATA>) {
    print /(?:SSL|SSL Certificate|VASCO)/ ? "Match\n" : "No match\n";
}


__DATA__
SSL
SSL Certificate
VASCO
something else
[download]

Output:

Match
Match
Match
No match

Comment on Re: Regex to match multiple words in an email subject Download Code

Replies are listed 'Best First'.
Re^2: Regex to match multiple words in an email subject by jwkrahn (Abbot) on Jan 07, 2011 at 07:22 UTC
`print /(?:SSL\|SSL Certificate\|VASCO)/ ? "Match\n" : "No match\n";` [download] Because the pattern is not anchored at either end the string 'SSL Certificate' will never match. `$ perl -le' my @strings = ( "SSL", "SSL Certificate", "VASCO", "something else", ); for ( @strings ) { print $1 if /(SSL\|SSL Certificate\|VASCO)/; } ' SSL SSL VASCO` [download] With no anchors you need to put the longer strings first: `$ perl -le' my @strings = ( "SSL", "SSL Certificate", "VASCO", "something else", ); for ( @strings ) { print $1 if /(SSL Certificate\|SSL\|VASCO)/; } ' SSL SSL Certificate VASCO` [download]	[reply] [d/l] [select]
Re^3: Regex to match multiple words in an email subject by philipbailey (Curate) on Jan 07, 2011 at 09:58 UTC
That's a good point, but in the OP's use case it's irrelevant. In fact, the regex could be trimmed down to: `/(SSL\|VASCO)/` Or, to avoid unnecessary capturing: `/(?:SSL\|VASCO)/`	[reply] [d/l] [select]
Re^4: Regex to match multiple words in an email subject by JavaFan (Canon) on Jan 07, 2011 at 12:36 UTC
Or, in the OPs case: `/SSL\|VASCO/` [download]	[reply] [d/l]


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