$HostnameRegex = qr/[-a-z0-9]+(\.[-a-z0-9]+)*\.(com|edu|info)/i;

# Turn email addresses into links . . . 
$text =~ s{
   \b
   # Capture the address to $1 . . . 
   (
     \w[-.\w]*                          # username
     \@
     $HostnameRegex  # hostname
   )
   \b
}{<a href="mailto:$1">$1</a>}gix;

# Turn <ACRONYM>HTTP</ACRONYM> <ACRONYM>URL</ACRONYM>s into links . . . 
$text =~ s{
   \b
   # Capture the <ACRONYM>URL</ACRONYM> to $1 . . . 
   (
      http:// $HostnameRegex \b          # hostname
      (
         / [-a-z0-9_:\@&?=+,.!/~*'%\$]* # Optional path
           (?<![.,?!])    # not allowed to end with [.,?!]
      )?
   )
}{<a href="$1">$1</a>}gix;




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Copyright 1997-2024 Jeffrey Friedl