As evidenced by the sshuttle ... | cat test, the problem is indeed unrelated to perl. The sshuttle is a python program. Why have you chosen to raise the github issue with Capture-Tiny instead of sshuttle?

I've already hinted on three possible workarounds you could use on the perl size, that may or may not work at all. (Ignore SIGTTIN SIGTTOU before exec; Explicit redirect/close(STDERR); Setting up the task as session leader via IO::Pty.) Did you try any of these?

It is unlikely anyone on PerlMonks is going to debug python programs for your benefit or amusement. And we cannot Chuck Norris(*) your code.


In reply to Re^6: Capture::Tiny alternative by Anonymous Monk
in thread Capture::Tiny alternative by melezhik

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.