[Bug 1761] sftp exits on 2nd terminal resize after a transfer

[bugzilla-daemon at bugzilla.mindrot.org]

https://bugzilla.mindrot.org/show_bug.cgi?id=1761

--- Comment #4 from Edward Sheldrake <ejsheldrake at googlemail.com>  ---
Created attachment 1904
  --> https://bugzilla.mindrot.org/attachment.cgi?id=1904
fix for libedit

I now think this is more likely to be a libedit bug, since when running
sftp, libedit's sig_handler() function only gets called on the first
SIGWINCH during a read, any more seem to be ignored.

Fixing that seems to solve the problem (although I don't really know
why it causes sftp to close only after a progress bar has been shown).
I've emailed the libedit maintainers with my new findings.

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