GNU bug report logs - #20008
24.4; Eshell eshell/which uses eshell-path-env but error with (getenv "PATH"), and these 2 sometimes get out of sync (not remote directory)

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Hua Wei <phuck163 <at> 163.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.4; Eshell eshell/which uses eshell-path-env but error with (getenv
 "PATH"), and these 2 sometimes get out of sync (not remote directory)
Date: Thu, 05 Mar 2015 17:30:42 +0800

M-x eshell
switch to other buffer 
use (setenv "PATH"  "some path") to set new PATH env var
enter eshell with C-u 2 eshell   (there is already one eshell buffer running)
  a new eshell buffer opens
type command "which <new cmd under new path>"
output   "not found   in 'path'"  (in this message, the 'path' is from (getenv "PATH"))
  this is confusing, because the function uses 'eshell-path-env' for search and use (getenv "PATH") for error messaging 
the bug:
eshell-path-env gets out of sync with (getenv "PATH")




In GNU Emacs 24.4.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.8.7)
 of 2014-11-29 
Windowing system distributor `The X.Org Foundation', version 11.0.11403000
System Description:	Linux Mint 16 Petra

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Message #8 received at 20008 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Kangas <stefan <at> marxist.se>
To: Hua Wei <phuck163 <at> 163.com>
Cc: 20008 <at> debbugs.gnu.org
Subject: Re: bug#20008: 24.4; Eshell eshell/which uses eshell-path-env but
 error with (getenv "PATH"), and these 2 sometimes get out of sync (not
 remote directory)
Date: Sun, 01 Dec 2019 09:07:21 +0100

found 20008 27.0.50
tags 20008 + confirmed
thanks

Hua Wei <phuck163 <at> 163.com> writes:

> M-x eshell
> switch to other buffer 
> use (setenv "PATH"  "some path") to set new PATH env var
> enter eshell with C-u 2 eshell   (there is already one eshell buffer running)
>   a new eshell buffer opens
> type command "which <new cmd under new path>"
> output   "not found   in 'path'"  (in this message, the 'path' is from (getenv "PATH"))
>   this is confusing, because the function uses 'eshell-path-env' for search and use (getenv "PATH") for error messaging 
> the bug:
> eshell-path-env gets out of sync with (getenv "PATH")

I can reproduce this bug on Emacs 27.1 using the following recipe:

0. emacs -Q
1. M-x eshell
2. Enter commands in eshell:

   mkdir /tmp/foobin
   cp /bin/true /tmp/foobin/foobar
   setenv PATH /tmp/foobin
   foobar

Here is a transcript:

    Welcome to the Emacs shell
    
    ~ $ mkdir /tmp/foobin
    ~ $ cp /bin/true /tmp/foobin/foobar
    ~ $ setenv PATH /tmp/foobin
    /tmp/foobin
    ~ $ foobar
    foobar: command not found

Best regards,
Stefan Kangas

Message #17 received at 20008-done <at> debbugs.gnu.org (full text, mbox):

From: Jim Porter <jporterbugs <at> gmail.com>
To: Hua Wei <phuck163 <at> 163.com>, 20008-done <at> debbugs.gnu.org
Subject: Re: 24.4; Eshell eshell/which uses eshell-path-env but error with
 (getenv "PATH"), and these 2 sometimes get out of sync (not remote directory)
Date: Mon, 17 Oct 2022 18:54:32 -0700

On 3/5/2015 1:30 AM, Hua Wei wrote:
> 
> M-x eshell
> switch to other buffer
> use (setenv "PATH"  "some path") to set new PATH env var
> enter eshell with C-u 2 eshell   (there is already one eshell buffer running)
>    a new eshell buffer opens
> type command "which <new cmd under new path>"
> output   "not found   in 'path'"  (in this message, the 'path' is from (getenv "PATH"))
>    this is confusing, because the function uses 'eshell-path-env' for search and use (getenv "PATH") for error messaging
> the bug:
> eshell-path-env gets out of sync with (getenv "PATH")

I've fixed this in fd4992d356a9c4225cb518a6a5309aaa1d0f640b over in 
bug#57556. Closing.

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