bug#39667: 26.2; Restarting a *shell* buffer breaks saving history
From:
ndame
Subject:
bug#39667: 26.2; Restarting a *shell* buffer breaks saving history
Date:
Tue, 18 Feb 2020 17:17:47 +0000 (GMT)
I tried it on windows.
Start M-x shell.
Check the value of comint-input-ring-file-name in the buffer. It's
"~/.history" and the input ring has values read from this file.
Exit the shell with Ctrl+D. The shell exits, the buffer remains.
Restart the shell with M-x shell.
Check the value of comint-input-ring-file-name. It's nil, because
comint-input-ring has already has a value from the previous
invocation, so shell-mode skips the whole history setup: (when
(ring-empty-p comint-input-ring) ...
Without the setup shell-write-history-on-exit is not called and if it
were it would do nothing, because comint-input-ring-file-name is nil.
Therefore the restarted *shell* buffer won't save commands made in it
to history.
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