Hello,
i have the following problem during creation my own source filter written as XS:

1. for checking that filter is only one applied for source code i do: 
if ( av_len(PL_rsfp_filters) > 1 )
{
 warn("too many filters\n");
}

[download]
but this check doesn't work if i use perl script like: 
#!/usr/bin/perl
use myfilter; use otherfilter;
...

[download]
av_len(PL_rsfp_filters) is equal to 1 in this case!

2. i look at sources of perl and found that new filter is added to PL_rsfp_filters after call of filter_add() function.
so i moved my check code after call filter_add() in my module.
but this didn't help.

in result i have a question: what does PL_rsfp_filters contain ? all enabled filters? or something else ?
Thank in advance.

In reply to PL_rsfp_filters - what does it contain ? by sawoy

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.