I agree entirely, and just wanted to add: a common misconception (one that I was guilty of myself sometimes, before being enlightened about it) is that a regex that doesn't start with ^ but ends with $ somehow changes the behavior of the regex engine to start looking at the end of the string - this isn't how it works, the regex engine always matches from left to right and stops at the first match it finds. A regex of "/foo/bar/baz" =~ m{/[^/]+$} will still cause the regex engine to attempt to match /foo and /bar before settling on /baz - you can see this in action at this link (JavaScript and a modern browser required) when you click the use re "debug"; button.

Update: Corrected = to =~, thanks hippo!


In reply to Re^2: Why does this non-greedy match not work? (updated) by haukex
in thread Why does this non-greedy match not work? by Special_K

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.