[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Environment variables for remote processes
From: |
Michael Albinus |
Subject: |
Re: Environment variables for remote processes |
Date: |
Wed, 19 Nov 2014 19:18:07 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.0.50 (gnu/linux) |
Stefan Monnier <address@hidden> writes:
>> It's not so simple to decide what's appropriate settings. You do NOT
>> want to propagate all your local environment variables to the remote
>> process. Your local settings of DISPLAY or DBUS_SESSION_BUS_ADDRESS, to
>> give prominent examples, would confuse your remote process heavily.
>
> Check again: these will not be present in "the difference between
> process-environment and (default-toplevel-value
> 'process-environment)".
But then you change the definition of process-environment. The docstring
says "let-binding `process-environment' is an easy way to temporarily
change the value of an environment variable". It does not say it should
be the only way to do that, especially for process-file.
And you still have the distinction between processes on the local host,
and processes on the remote host. The former ones can expect all
settings from process-environment, the latter ones can expect only the
environment vatriables which are different to the toplevel value. Up to
now, nobody had to care about processes running locally or remote;
process-file did arrange it magically.
I do not say that I completely oppose (I start to understand your
proposal), but this might break existing code.
Fortunately, we do not need to care XEmacs compatibility here: there is
no process-file :-)
> That's why I suggested to send "env <ENV> <CMD>". Another option
> might be:
>
> (export VAR1=VAL1
> unset VAR2
> export VAR3=VAL3
> ...
> <CMD>)
Another possibility might be heredoc commands. But that's an
implementation detail.
> -- Stefan
Best regards, Michael.
- Environment variables for remote processes (was: bug#18940: 24.4; vc-hg does not disable pager, leading to hangs (at least with tramp)), Michael Albinus, 2014/11/17
- Re: Environment variables for remote processes, Stefan Monnier, 2014/11/17
- Re: Environment variables for remote processes, Michael Albinus, 2014/11/18
- Re: Environment variables for remote processes, Stefan Monnier, 2014/11/18
- Re: Environment variables for remote processes, Michael Albinus, 2014/11/18
- Re: Environment variables for remote processes, Stefan Monnier, 2014/11/18
- Re: Environment variables for remote processes, andres . ramirez, 2014/11/19
- Re: Environment variables for remote processes, Michael Albinus, 2014/11/23
- Re: Environment variables for remote processes,
Michael Albinus <=
- Re: Environment variables for remote processes, Michael Albinus, 2014/11/19
- Re: Environment variables for remote processes, Stefan Monnier, 2014/11/19
- Re: Environment variables for remote processes, Michael Albinus, 2014/11/20
- Re: Environment variables for remote processes, Stefan Monnier, 2014/11/20
- Re: Environment variables for remote processes, Michael Albinus, 2014/11/22
- Re: Environment variables for remote processes, Stefan Monnier, 2014/11/22
- Re: Environment variables for remote processes, Michael Albinus, 2014/11/22