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Do you have a problem with GNU Emacs C-x` command?

April 26, 2017Command Emacs GNU problem

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Do you have a problem with GNU Emacs C-x` command?

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Gnu Emacs 18.55 (with Leonard N. Zubkoff’s patches for SR10.2) seems to have a problem with shell subprocesses. At times the 0x0 character (displayed as ^@ by Emacs) appears in buffers running a shell. While this is only a nuisance running an inferior shell, it is a problem when running the M-x compile command: The C-x ` (next-error) function is unable to process the compiler output. Has anybody found out what causes this problem and how to fix it? Any hints will be appreciated! ( 2/15/94, Michael K. Gschwind ) Emacs talks to its subsprocesses using pseudo ttys (ptys among friends). On Apollos, ptys occasionally get corrupted, and the problem you describe results. Rebuilding the ptys helps, but it can have funny side effects to any users logged in on those ptys. We rebuild ours once per week. That seems to avoid the problem most of the time, but of course your mileage may vary. Here is the relevant line from our /usr/lib/crontab (running the shell script at