Dear ALL,

I was doing some parsing for log file and come to this bug (i think), I add the next simple code to show you what I face:

use strict;
use warnings;


my $data = 'blabla;tag1=12345;blabla;';
# my $data = 'blabla;tag1=12345;blabla;tag2=99999';

# get tag1 value
$data =~ m/tag1=(\d+)/g;
my $tag1 = $1;

# get tag2 value
$data =~ m/tag2=(\d+)/g;
my $tag2 = $1;

print "tag1 = $tag1\n";
print "tag2 = $tag2\n";

[download]

The output:

tag1 = 12345
tag2 = 12345

[download]

Us you can see the are only tag1 value in $data, so should be no match and the second tag $tag2 should be undefined,

but what i got is  $tag1 =$tag2!!!.

So can any monk here (and pretty please) explain to my what happen here.

BR

Hosen

In reply to ambiguous regex match by Hosen1989

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