Well yes, I was reluctant to suggesting parsing the source since it seemed far beyond your scope. (Caller has also some limitations if it comes to the line number)

IIRC is Carp listing the stack trace with the original arguments if called inside the debugger. That's because DB is caching all source lines internally.

You could do the same with a "passiv" source filter.

Since it would only read and not change the source it can't possibly cause any harm.

Another way is adding __DATA__ at the end of your file, because the DATA filehandle is just reading your source. ( seek and see ;)

Both possibilities need far less resources and are more reliable.

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery

In reply to Re^2: Spotting an empty array as argument by LanX
in thread Spotting an empty array as argument by Chuma

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.