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bug#30134: ehsell and process-environment variable
From: |
Eli Zaretskii |
Subject: |
bug#30134: ehsell and process-environment variable |
Date: |
Tue, 16 Jan 2018 05:40:33 +0200 |
> From: SK Kim <tttuuu888@gmail.com>
> Date: Tue, 16 Jan 2018 11:31:27 +0900
>
> 1) start emacs with 'emacs -Q'
>
> 2) 'M-x eshell' to open eshell buffer.
>
> 3) evaluate below code in eshell buffer.
> (let ((process-environment (cons "TEST=1234" process-environment)))
> (make-term "test-term" "/bin/bash"))
>
> 4) moved to buffer 'test-term' and type 'echo $TEST' and you can see
> nothing.
>
> The modified process-environment variable is not properly affected if
> the code is evaluated in eshell buffer. The eshell buffer is the only
> buffer that I found the above code is not working properly.
process-environment is for invoking other programs from Emacs. By
contrast, Eshell does not invoke any other program, it is implemented
in Emacs itself. And process-environment doesn't affect Emacs itself.
That is why you see the difference with other programs, in particular
shells invoked from Emacs.