Just kibitzing on your choices, but option one just feels . . . bleh. Can't articulate why but it just doesn't . . . feel right; having the extra filtering sub inside the block . . . meh.

WRT to the other two, while a bit more verbose I like two more than three (which feels (for lack of a better word) like an overly cute hack (and you're also presuming nothing else has used the name _ for a sub)). It strikes me as much less "hah ha look what games I can play with the parser" and more of a "this is just normal perl with two minor magic keywords" (again, my two cents gut feel when I read).

The cake is a lie.
The cake is a lie.
The cake is a lie.


In reply to Re: conditional catch-blocks 'try {} catch(COND) { }' by Fletch
in thread conditional catch-blocks 'try {} catch(COND) { }' by LanX

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.