Tags: patch

`with-temp-buffer' doesn't respect buffer-local environment variables,
`exec-path' in this case.  Which results in executables not being found,
or the wrong versions of executables being picked up.  E.g. if
environment variable is modified via .dir-local file or direnv/envrc
package.

I see that this function tries to be remote-host friendly (uses
`process-file') so I tried to ensure that this patch doesn't break this
effort, but I'm not sure that I understand the machinery behind TRAMP
correctly.  So please consider this aspect from your side.

This patch shouldn't interfere with TRAMP, if I understand
`process-file`s doc correctly:

     If a file name handler is invoked, it determines the program to run
     based on the first argument PROGRAM.  For instance, suppose that a
     handler for remote files is invoked.  Then the path that is used
     for searching for the program might be different from ‘exec-path’.


In GNU Emacs 30.0.60 (build 1, x86_64-pc-linux-gnu, GTK+ Version
3.24.41, cairo version 1.18.0)
Windowing system distributor 'The X.Org Foundation', version 11.0.12101011
System Description: Guix System

Configured using:
 'configure
 CONFIG_SHELL=/gnu/store/fl3l5wx8qynjrvx5lilz6c38hb77cf36-bash-minimal-5.1.16/bin/bash
 SHELL=/gnu/store/fl3l5wx8qynjrvx5lilz6c38hb77cf36-bash-minimal-5.1.16/bin/bash
 --prefix=/gnu/store/45nwc8hc8fn1fhvr9qw01ylkfpvzxwsw-emacs-next-30.0.60-1.4e22ef8
 --enable-fast-install --with-cairo --with-modules
 --with-native-compilation=aot --disable-build-details'