changing comint-input-ring-file-name in process in shell
Seb
A program that runs in shell mode uses a local history file. Therefore,
I'd like to set `comint-input-ring-file-name' to that file. I use the
program by doing "M-x shell", and then start the program in the shell
buffer by typing its name and hitting ENTER. The program's prompt
replaces the shell's at this point. I thought that subsequently
evaluating the following in the shell buffer would allow me to cycle
through the local history file:
(setq comint-input-ring-file-name
"/path/to/local/.bash_history"))
However, cycling with "M-p" or "M-n" cycles the input through the
initial `comint-input-ring-file-name' set by the shell buffer, in my
case ~/.bash_history since I'm using bash. Doing "C-h v
comint-input-ring-file-name" does show the new value
("/path/to/loca/.bash_history"), so I don't understand what is going
on. Any help would be appreciated.
Cheers,
--
Seb
Kevin Rodgers
The file is read once by shell-mode (not comint-mode), when you execute
`M-x shell'. That is why the doc string for comint-input-ring-file-name
says "This variable is buffer-local, and is a good thing to set in mode hooks."
How about:
(let ((comint-input-ring-file-name "/path/to/local/.bash_history"))
(shell))
--
Kevin Rodgers
Denver, Colorado, USA
Seb
Kevin Rodgers <kevin.d...@gmail.com> wrote:
[...]
> How about:
> (let ((comint-input-ring-file-name "/path/to/local/.bash_history"))
> (shell))
Thanks for the explanation Kevin. There is no difference with your
suggestion, however. In the resulting shell buffer I see:
,-----[ C-h v comint-input-ring-file-name RET ]
| comint-input-ring-file-name's value is "~/.bash_history"
| Local in buffer *shell*; global value is nil
|
| Documentation:
| If non-nil, name of the file to read/write input history.
| See also `comint-read-input-ring' and `comint-write-input-ring'.
|
| This variable is buffer-local, and is a good thing to set in mode hooks.
|
| You can customize this variable.
|
| [back]
`-----
and cycling shows that: i.e. "M-n" and "M-p" cycle through
~/bash_history, rather than the value in the `let' statement. This is
strange. This is on Emacs 23.
--
Seb
Kevin Rodgers
How do you set comint-input-ring-file-name to "~/.bash_history"?
i.e. at the top-level or within shell-mode-hook?
If the latter, the hook will override the let binding.