On that note, though, the following seems to be valid Perl code, if a little awkwardly: 
my $sql = qq{ SELECT id FROM ${table} };

[download]
It works as far as I can tell, but my syntax hilighter goes nuts on it, closing the string at the first instance of '}', which makes sense. Perl seems to be extra careful about interpolating.

Perl takes balanced parens/brackets/braces/angles into account, that's why it works. Quoting from perlop: 

    Non-bracketing delimiters use the same character fore and aft, but the
    four sorts of brackets (round, angle, square, curly) will all nest,
    which means that

            q{foo{bar}baz} 

    is the same as

            'foo{bar}baz'

and it still goes on a bit. This is the perlop for 5.6.1. Older versions of this document aren't as elaborate, though they still mention that these pairs indeed do nest, at least up to the oldest version I found, v.5.004_05.

In reply to Re: Re: RegExp Delimiter by bart
in thread RegExp Delimiter by perchance

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.