Re: Simple Emacs for rescue or quick edits?

[Oleksandr Gavenko <gavenkoa@gmail.com>]

On 2013-07-31, Pascal J. Bourguignon wrote:

> Why wouldn't it?  I use enw:
>
> $ cat > ~/bin/enw <<EOF
> #!/bin/bash
> exec emacs -q -nw "$@"
> EOF
> $ chmod 755 ~/bin/enw
> $ export EDITOR=enw
> $ export VISUAL=enw
>

I also make another check:

  $ strace emacs -q -nw -e 'kill-emacs' 2>&1 | grep ^open | grep -v ENOENT
  347

  $ strace emacs -Q -nw -e 'kill-emacs' 2>&1 | grep ^open | grep -v ENOENT
  118

  $ strace vim -u NONE -c 'q' 2>&1 | grep ^open | grep -v ENOENT | wc -l
  81

Seems that Debian site-lisp slow down loading of bare emacs. So -Q is another
good suggestion.

Some strange I see in:

  $ strace emacs -Q -nw -e 'kill-emacs' 2>&1 | grep ^open

  203:1294:open("/home/user/.abbrev_defs", O_RDONLY) = 4
  ... 4 times more ...

I don't use abbrev.el. And my ~/.abbrev_defs has a lot of empty:

  (define-abbrev-table 'shell-mode-abbrev-table '(
    ))

Look like suggestion for Emacs improvement (disabling abbrev with -Q).

> alias e='emacs -q -nw' # works too.
>
> for quick edits.   And when I say quick, I mean quick: almost 1/4 the
> boot time of vim:
>
> [pjb@kuiper :0.0 ~]$ time echo :q |vim
> real    0m2.027s
> user    0m0.016s
> sys     0m0.008s
>
> [pjb@kuiper :0.0 ~]$ time emacs -q -nw -e 'kill-emacs'
> real    0m0.573s
> user    0m0.528s
> sys     0m0.040s
>

I check on my system - both really fast (emacs 2 time slower, but who care if
it is 0.04s)!

>> Any suggestions?
>
> Use emacs, always emacs.

I use sh wrapper around "exec emacsclient -a emacs -n". '-n' is essential
part.

But Emacs block itself ever with "emacsclient -n" when you try run:

  M-! emacsclient -n <FILE-OR-DIR> RET  (or M-x shell-command).

With "emacs -Q" I avoid such issue.

-- 
Best regards!