No real need to use nested *'s. Remember that the * character can be "greedy" in a regular expression, meaning that it finds more than one possibility, and will take the last one it gets. I used this:
#!/usr/bin/perl -w
use strict;
my $txt = "foo *text* bar *bat* bounce";
$txt =~ s/\*(.*?)\*/<em>$1<\/em>/g;
print $txt."\n";
Broken down:
s/ substitute
\* a star
(.*?) then a group of arbitrary characters (but only match once, see b
+elow)
\* then another star
/ replace it with
<em>$1<\/em> what we just got, surrounded by <em>'s
/g; do this across the entire string;
What .*?\* will do for you is match all characters for you before a star, but the ? tells it to stop matching after the first possibility.
Without it, your output would look like
foo <em>text* bar *bat</em> bounce
- instead of -
foo <em>text</em> bar <em>bat</em> bounce
Good luck with it. Having MacPerl shouldn't make any difference.
--
jb
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