I once tried to use logic inside a split(), and it produced buggy results: 
@parts = split m{
  "            # if we match a quote
  (?{ ++$x })  # increment quote counter
  (?!)         # and fail
  |
  \s+          # or if we match whitespace
  (?(?{$x&1})  # if $x is odd
    (?!)       # fail
  )            # (otherwise succeed)
}x, q{A B "C D" E F"G H" I};

[download]
But it doesn't work right. 0's and 2's end up in the output. It's crappy.

I'd use a regex, not split(). 

@parts = $string =~ m{
  (?=\S)       # so long as there's something ahead of us:
  [^\s"]*      # non-quotes non-whitespace
  (?:
    " [^"]* "  # a quoted part
    [^\s"]*    # non-quotes non-whitespace
  )*           # zero or more times
}xg;

[download]
_____________________________________________________
Jeff[japhy]Pinyan: Perl, regex, and perl hacker, who'd like a job (NYC-area)
s++=END;++y(;-P)}y js++=;shajsj<++y(p-q)}?print:??;

In reply to Re: Not quite a simple split by japhy
in thread Not quite a simple split by John M. Dlugosz

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.