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bug#28691: [PATCH] Add file name handler support for 'make-process' (Bug

From: Michael Albinus
Subject: bug#28691: [PATCH] Add file name handler support for 'make-process' (Bug#28691)
Date: Sun, 23 Dec 2018 11:26:54 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux)

Philipp Stephani <address@hidden> writes:

Hi Philipp,

>> Tramp does *handle* all operations. But it does not *support* all of
>> them. In case it is not possible to offer an implementation for
>> `start-file-process' (as example), Tramp uses `ignore' as implementation.
> Yes, I've seen this, but it's a characteristic of Tramp, not of Emacs
> itself, so I don't think it should be documented in the Elisp manual
> itself.

Tramp (and partly ange-ftp) are the only file name handlers which offer
process-related implementations. So it isn't wrong to document this, I

Since we disgree here, let Eli decide.

> I also think that Tramp should actually not return nil, but signal an
> error instead. make-process either returns a process object or signals
> an error (except for a weird corner case with zero arguments), and I
> think file name handlers handling make-process should behave the same.

No, `make-process' does *not* raise an error, it returns a process
object. The process itself aborts, which is a different thing. Tramp
will behave similar.

--8<---------------cut here---------------start------------->8---
(make-process :name "foo" :buffer (current-buffer) :command '("/bin/foo"))
#<process foo>

emacs: /bin/foo: No such file or directory

Process foo exited abnormally with code 127
--8<---------------cut here---------------end--------------->8---

Best regards, Michael.

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