[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Speeding up Flymake in emacs-lisp-mode
From: |
Noam Postavsky |
Subject: |
Re: Speeding up Flymake in emacs-lisp-mode |
Date: |
Fri, 2 Nov 2018 09:26:13 -0400 |
On Fri, 2 Nov 2018 at 09:12, Stefan Monnier <address@hidden> wrote:
>
> > First, I was under the impression that stdin/stdout for emacs was
> > not easy.
>
> Usually it's not, but when running in batch mode it's not so bad.
Yup, (elisp) Batch Mode:
input that would normally come from the minibuffer is read from the
standard input descriptor.
> > Glad to hear it isn't, but how do I read from stdin?
>
> async.el does it with (read t), IIRC.
read-from-minibuffer should also work if non-sexp input is wanted.
>> What do you mean by asynchronous process startup? Isn't that
>> a "stop-the-world" operation however it is invoked?
The subprocess created by make-process (or start-process) doesn't
block the parent Emacs, it runs in parallel.
(benchmark
1 '(call-process (concat invocation-directory invocation-name)
nil nil nil "-Q" "--batch"))
;=> "Elapsed time: 0.185000s"
(benchmark 1 '(start-process
"emacs" nil (concat invocation-directory invocation-name)
"-Q" "--batch"))
;=> "Elapsed time: 0.031000s"