I appreciate reading the conversation you guys had, sorry I wasn't to able to take part. I'm now using a slightly modified version of Eily's regex (proven using the above framework and in my own tests):

our $RXdqs =   qr/ " (?> \\. | [^"\\] )* " /x;

[download]

Note that all of my $RX... regex variables are used inside other regexes and surrounded on both sides by \s* and various specific characters like parentheses and commas (this is a parser for a formally defined syntax that proceeds through the input text serially, I'm not trying to find $needle inside some giant $haystack). I do have individual tests for these variables now, previously I was only testing the parser at a higher level.

- Andrew

In reply to Re^11: Parser Performance Question (Atomic grouping) by songmaster
in thread Parser Performance Question by songmaster

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.