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Re: M-x call with optional arg; call from Elisp
From: |
Emanuel Berg |
Subject: |
Re: M-x call with optional arg; call from Elisp |
Date: |
Tue, 28 May 2013 21:24:45 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/23.4 (gnu/linux) |
First, I got this reply as a mail, but I don't see it on the list.
Quoting "B. T. Raven":
> As in your "count-buffer-wc-option" function below. Of course the
> whole exercise can be avoided with M-| or C-x h M-|
`C-x h' would be mark-whole-buffer, and M-| (pipe)
shell-command-on-region. Tough that is certainly an alternative, I
think `M-x words' is a lot better (on the region if there is one;
otherwise, the entire buffer). So this is not an "exercise", I set it
up because I intend to use it.
> Since a null string is still a string you need something like
> (length opts).
My thought was rather - it is not even a null string if no optional
arg is passed. I don't know if that is the case; but that would be
easy to find out once I'm able to call the functions as intended,
with or without the optional arg.
--
Emanuel Berg - programmer (hire me! CV below)
computer projects: http://user.it.uu.se/~embe8573
internet activity: http://home.student.uu.se/embe8573