Re: Added native support for TRAMP.

[Shigio YAMAGUCHI]

Hello Michael,
It worked as expected!

I've tried let-binding before, but it seems that
environment variables are not sent when the value
of process-environment is not changed.

Anyway, it looks like I can realize 'gtags-visit-rootdir'.
I will register the new version in the repository
in a couple of days.

Thank you very much for your polite explanation.

Regards,
Shigio

2021年2月27日(土) 19:43 Michael Albinus <michael.albinus@gmx.de>:
>
> Shigio YAMAGUCHI <shigio@gnu.org> writes:
>
> > Hello everybody,
>
> Hi Shigio,
>
> > I have put new gtags.el to the repository, which natively supports TRAMP.
> > [http://cvs.savannah.gnu.org/viewvc/*checkout*/global/global/gtags.el]
> > It's working somehow, can you give it a try?
> >
> > Required:
> >   GNU Emacs version 22 or later (Tested on version 26).
> > Limitations:
> >   gtags-visit-rootdir: Does not work.
> >   gtags-path-style: 'root is automatically converted to 'relative.
>
> Well, I don't use GNU Global myself, so I cannot test. But I have
> compared your new version with an older one, lying around here. From dry
> code reading, it seems to be OK. Some Tramp functionality could be
> applied more simple if the backward compatibility wouldn't be up to
> Emacs 22, but that's just a side remark.
>
> > By the way, I still cannot pass environment variables to the remote site
> > using tramp mode. Can anyone please tell me how to do it?
>
> `tramp-remote-process-environment' is the place to use, However, it sets
> the environment when the connection is established. When you use an
> already running connection via `process-file', it won't help.
>
> Since Tramp 2.2.11 (Emacs 24.5), you can let-bind additional environment
> variables to `process-environment', which will be used for the remote
> process. The Tramp manual says:
>
> --8<---------------cut here---------------start------------->8---
>    In addition to ‘tramp-remote-process-environment’, you can set
> environment variables for individual remote process calls by let-binding
> ‘process-environment’.  TRAMP applies any entries not present in the
> global default value of ‘process-environment’ (overriding
> ‘tramp-remote-process-environment’ settings, if they conflict).  For
> example:
>
>      (let ((process-environment (cons "HGPLAIN=1" process-environment)))
>        (process-file ...))
>
>    Let-binding in this way works regardless of whether the process to be
> called is local or remote, since TRAMP would add just the ‘HGPLAIN’
> setting and local processes would take whole value of
> ‘process-environment’ along with the new value of ‘HGPLAIN’.
> --8<---------------cut here---------------end--------------->8---
>
> > Regards,
> > Shigio
>
> Best regards, Michael.



-- 
Shigio YAMAGUCHI <shigio@gnu.org>
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