Dear Perl Monks,

I have a situation with regex and a function call which dumps some junk (control) characters in match variables($1, $2)
The codes are something like below, 

If($str =~ m/(pattern1)(pattern2)/gi)
  {
  $str = &function($1);
  $var1 = &function($2);
  }

[download]
Here $var1 is getting some junk control characters which was never part of match. Could you please help to get some light into why this is happening?
When we try to put these codes in a different way, i.e. not making use of $2 – everything works fine – i.e. without any junk characters. Something like below, 
If($str =~ m/(pattern2)/gi)
  {
  $var1 = &function($1);
  If($str =~ m/(pattern1)pattern2/gi){ $str = &function($1); }
  }

[download]
On another note, code-1: works fine on Windows system and shows junk Only on Linux. Code-2, works fine on both systems.

Many Thanks,

In reply to Regex, Function and Default variables by tosaiju

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