* Windows: exec-path not working?
@ 2009-07-29 9:12 Elena
2009-07-29 16:15 ` Eli Zaretskii
0 siblings, 1 reply; 2+ messages in thread
From: Elena @ 2009-07-29 9:12 UTC (permalink / raw)
To: help-gnu-emacs
Hello,
I was trying to use the "M-x grep" under Windows, but it was failing
since "grep.exe" was missing. I downloaded GnuWin32's grep (it worked
under command line) and appended its directory to exec-path:
(setq exec-path (append exec-path (list "C:/gnuwin32/bin")))
and checked it. Anyway, running "M-x grep" still couldn't find "grep".
Then, I set Emacs' environment PATH by means of "setenv" and "grep"
got found.
Shouldn't be exec-path and PATH achieve the same goal under Emacs?
Thanks.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Windows: exec-path not working?
2009-07-29 9:12 Windows: exec-path not working? Elena
@ 2009-07-29 16:15 ` Eli Zaretskii
0 siblings, 0 replies; 2+ messages in thread
From: Eli Zaretskii @ 2009-07-29 16:15 UTC (permalink / raw)
To: help-gnu-emacs
> From: Elena <egarrulo@gmail.com>
> Date: Wed, 29 Jul 2009 02:12:59 -0700 (PDT)
>
> (setq exec-path (append exec-path (list "C:/gnuwin32/bin")))
>
> and checked it. Anyway, running "M-x grep" still couldn't find "grep".
>
> Then, I set Emacs' environment PATH by means of "setenv" and "grep"
> got found.
>
> Shouldn't be exec-path and PATH achieve the same goal under Emacs?
No. exec-path is used by Emacs to search for programs it runs
directly. But "M-x grep" does not run grep.exe directly; it runs the
shell passing it a command that invokes grep. So it's the shell that
needs to find grep.exe, and it uses PATH, of course, not exec-path.
So the right thing to do when you install a new program, in order for
Emacs to find it, is _both_ to update exec-path _and_ update PATH.
This is because some Emacs features invoke programs directly, while
others do that through the shell or some other intermediary programs.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2009-07-29 9:12 Windows: exec-path not working? Elena
2009-07-29 16:15 ` Eli Zaretskii
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