* Relation between the value of shell-file-name and explicit-shell-file-name
@ 2006-12-13 22:55 Lennart Borgman
2006-12-14 1:33 ` Stuart D. Herring
0 siblings, 1 reply; 6+ messages in thread
From: Lennart Borgman @ 2006-12-13 22:55 UTC (permalink / raw)
What is the relation between the values of these two variables? Could
the doc strings please mention something about it? (Does
explicit-shell-file-name override shell-file-name for explicitly
requested shells? Are those the shells started with M-x shell? )
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Relation between the value of shell-file-name and explicit-shell-file-name
2006-12-13 22:55 Relation between the value of shell-file-name and explicit-shell-file-name Lennart Borgman
@ 2006-12-14 1:33 ` Stuart D. Herring
2006-12-14 1:44 ` Lennart Borgman
0 siblings, 1 reply; 6+ messages in thread
From: Stuart D. Herring @ 2006-12-14 1:33 UTC (permalink / raw)
Cc: Emacs Devel
> What is the relation between the values of these two variables? Could
> the doc strings please mention something about it? (Does
> explicit-shell-file-name override shell-file-name for explicitly
> requested shells? Are those the shells started with M-x shell? )
`explicit-shell-file-name' is only ever used by M-x shell. It does
(or explicit-shell-file-name
(getenv "ESHELL") shell-file-name)
which obviously prefers $ESHELL to `shell-file-name' and
`explicit-shell-file-name' to $ESHELL. Note that it was different in
Emacs 21:
(or explicit-shell-file-name
(getenv "ESHELL")
(getenv "SHELL")
"/bin/sh")
Here `shell-file-name' is absent. The idea is that e-s-f-n is the
"personal" shell and s-f-n is the "utility" shell used by such things as
M-! and (unless you customize `ediff-shell') M-x ediff.
What do you want added to e-s-f-n's doc string to clarify this?
Davis
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^ permalink raw reply [flat|nested] 6+ messages in thread* Re: Relation between the value of shell-file-name and explicit-shell-file-name
2006-12-14 1:33 ` Stuart D. Herring
@ 2006-12-14 1:44 ` Lennart Borgman
2006-12-14 17:47 ` Richard Stallman
0 siblings, 1 reply; 6+ messages in thread
From: Lennart Borgman @ 2006-12-14 1:44 UTC (permalink / raw)
Cc: Emacs Devel
Stuart D. Herring wrote:
>> What is the relation between the values of these two variables? Could
>> the doc strings please mention something about it? (Does
>> explicit-shell-file-name override shell-file-name for explicitly
>> requested shells? Are those the shells started with M-x shell? )
>>
>
> `explicit-shell-file-name' is only ever used by M-x shell. It does
>
> (or explicit-shell-file-name
> (getenv "ESHELL") shell-file-name)
>
> which obviously prefers $ESHELL to `shell-file-name' and
> `explicit-shell-file-name' to $ESHELL. Note that it was different in
> Emacs 21:
>
> (or explicit-shell-file-name
> (getenv "ESHELL")
> (getenv "SHELL")
> "/bin/sh")
>
> Here `shell-file-name' is absent. The idea is that e-s-f-n is the
> "personal" shell and s-f-n is the "utility" shell used by such things as
> M-! and (unless you customize `ediff-shell') M-x ediff.
>
> What do you want added to e-s-f-n's doc string to clarify this?
>
Thanks Davis. I think the best would be to tell that it is only used by
the function shell. And BTW the doc string for shell is incorrect
regarding what shell file name to use.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Relation between the value of shell-file-name and explicit-shell-file-name
2006-12-14 1:44 ` Lennart Borgman
@ 2006-12-14 17:47 ` Richard Stallman
2006-12-14 18:01 ` Lennart Borgman
0 siblings, 1 reply; 6+ messages in thread
From: Richard Stallman @ 2006-12-14 17:47 UTC (permalink / raw)
Cc: emacs-devel
Thanks Davis. I think the best would be to tell that it is only used by
the function shell. And BTW the doc string for shell is incorrect
regarding what shell file name to use.
Could you be more specific? I do not see what is wrong there.
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: Relation between the value of shell-file-name and explicit-shell-file-name
2006-12-14 17:47 ` Richard Stallman
@ 2006-12-14 18:01 ` Lennart Borgman
2006-12-15 21:25 ` Richard Stallman
0 siblings, 1 reply; 6+ messages in thread
From: Lennart Borgman @ 2006-12-14 18:01 UTC (permalink / raw)
Cc: emacs-devel
Richard Stallman wrote:
> Thanks Davis. I think the best would be to tell that it is only used by
> the function shell. And BTW the doc string for shell is incorrect
> regarding what shell file name to use.
>
> Could you be more specific? I do not see what is wrong there.
>
In the code for shell this part chooses the program to use for the shell:
(let* ((prog (or explicit-shell-file-name
(getenv "ESHELL") shell-file-name))
This seems good, but the doc string does not mention shell-file-name. It
instead mentions SHELL which is wrong (and a bad idea):
Program used comes from variable `explicit-shell-file-name',
or (if that is nil) from the ESHELL environment variable,
or else from SHELL if there is no ESHELL.
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2006-12-15 21:25 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
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2006-12-13 22:55 Relation between the value of shell-file-name and explicit-shell-file-name Lennart Borgman
2006-12-14 1:33 ` Stuart D. Herring
2006-12-14 1:44 ` Lennart Borgman
2006-12-14 17:47 ` Richard Stallman
2006-12-14 18:01 ` Lennart Borgman
2006-12-15 21:25 ` Richard Stallman
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