--- rxvt-unicode/src/perl/selection	2006/01/03 19:42:53	1.7
+++ rxvt-unicode/src/perl/selection	2006/01/04 20:43:38	1.11
@@ -9,8 +9,41 @@
    ()
 }
 
+my @patterns = (
+   # urls, just a heuristic
+   qr{(
+      (?:https?|ftp|news|mailto|file)://[ab-zA-Z0-9\-\@;\/?:&=%\$_.+!*\x27(),]+
+      [^.]   # do not include a trailing dot, its wrong too often
+   )}x,
+
+   # shell-like argument quoting
+   qr{\G [\ \t|&;<>()] *(
+      (?:
+         [^\\"'\ \t|&;<>()]+
+         | \\.
+         | " ([^\\"]+ | \\. )* "
+         | ' [^']* '
+      )+
+   )}xs,
+);
+
 sub on_sel_extend {
    my ($self) = @_;
-   warn $self->selection;
+
+   my ($row, $col) = $self->selection_mark;
+   my $line = $self->line ($row);
+   my $offset = $line->offset_of ($row, $col);
+   my $text = $line->t;
+
+   for my $regex (@patterns) {
+      while ($text =~ /$regex/g) {
+         if ($-[1] <= $offset and $offset <= $+[1]) {
+            $self->selection_beg ($line->coord_of ($-[1]));
+            $self->selection_end ($line->coord_of ($+[1]));
+            return 1;
+         }
+      }
+   }
+
    ()
 }