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Shell history is not saved when the shell is exited then restarted
From: |
Tom |
Subject: |
Shell history is not saved when the shell is exited then restarted |
Date: |
Sat, 30 Oct 2010 20:29:32 +0000 (UTC) |
User-agent: |
Loom/3.14 (http://gmane.org/) |
I was wondering why my shell input history is not saved sometimes,
so I checked the code and found this condition in shell-mode:
(when (ring-empty-p comint-input-ring)
...
;; Arrange to write out the input ring on exit, if the shell doesn't
;; do this itself.
...
http://git.savannah.gnu.org/cgit/emacs.git/tree/lisp/shell.el#n448
My current shell is the Windows command prompt which needs that arranging
and that ring-empty-p check means if I exit from the shell for some reason
and then restart it with M-x shell then the inputs of the second session are
not saved, because the comint-input-ring already has items from the
previous shell invocation.
Is there a compelling reason for that check? Why can't the inputs be
saved if the comint-input-ring is not empty when the shell is started?
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