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bug#33050: 27.0.50; [macOS] Problem with process input with process-conn


From: Charles A. Roelli
Subject: bug#33050: 27.0.50; [macOS] Problem with process input with process-connection-type nil
Date: Sun, 28 Oct 2018 20:53:55 +0100

> Date: Sun, 28 Oct 2018 18:00:49 +0200
> From: Eli Zaretskii <address@hidden>
> 
> > Does anyone recall where these "character injections" come from?  ISTR
> > that these no longer happen...  Maybe this is a reference to the code
> > deleted here:
> > 
> > https://git.savannah.gnu.org/cgit/emacs.git/commit/?id=2b0a91e78f83fb446cc38efb99399e83ad2cded3
> > (as seen, e.g., in Bug#32438)
> 
> Probably.
> 
> > Also, both "process-send-region" and "process-send-string" (in master)
> > claim to split their process input if it is longer than 500
> > /characters/ (not bytes) -- but reading through the code in process.c,
> > it's not clear where (or if) this still happens.
> 
> pty_max_bytes was deleted as well, so I think you are right.

Aha, yes, pty_max_bytes was removed later after going unused for some time:

https://git.savannah.gnu.org/cgit/emacs.git/commit/?id=3d082a269ece18058ed82957f8a056822b39789e

IIUC, there might be a good case for bringing it back, with respect to
Bug#6149 and Bug#32438.  At least so that we can warn users (or
prevent them from) overflowing a pty input queue.

For the doc issue, I've opened Bug#33191.





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