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Re: Optional Arguments
From: |
Arthur Miller |
Subject: |
Re: Optional Arguments |
Date: |
Mon, 07 Dec 2020 21:52:11 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
Michael Heerdegen <michael_heerdegen@web.de> writes:
> pietru@caramail.com writes:
>
>> Am getting an error with the following.
>>
>> (defun word-markers ()
>> (let ((ma mb)) <--
>
> You bind `ma' to the value of `mb'. That's not what you want.
Exactly; this is what I had in my scratch when I tested: I just didn't
copy everything in previous answer:
(defun word-markers ()
(let (ma mb)
(skip-chars-backward "[:alpha:]")
(setq ma (point))
(skip-chars-forward "[:alpha:]")
(setq mb (point))
(cons ma mb)))
(defun test ()
(interactive)
(let ((deactivate-mark nil)
bounds ma mb)
(if (use-region-p)
(setq ma (region-beginning) mb (region-end))
(save-excursion
(setq bounds (word-markers))
(setq ma (car bounds))
(setq mb (cdr bounds))))
(message "Bounds: %s" (pp bounds))
(message "Region: [%s %s]" ma mb)
(message "Region-string: [%s]" (buffer-substring-no-properties ma mb))))
(test)
Tou should drop one parenthesis around ma and mb in your let
expression. That will declare two variables and initialize them to nil both.
- Re: Optional Arguments, (continued)
- Re: Optional Arguments, pietru, 2020/12/07
- Re: Optional Arguments, tomas, 2020/12/07
- Re: Optional Arguments, Anders Dalskov, 2020/12/07
- Re: Optional Arguments, pietru, 2020/12/07
- Re: Optional Arguments, tomas, 2020/12/07
- Re: Optional Arguments, pietru, 2020/12/07
- Re: Optional Arguments, Arthur Miller, 2020/12/07
- Re: Optional Arguments, pietru, 2020/12/07
- Re: Optional Arguments, Michael Heerdegen, 2020/12/07
- Re: Optional Arguments, pietru, 2020/12/07
- Re: Optional Arguments,
Arthur Miller <=
- Re: Optional Arguments, pietru, 2020/12/07
- Re: Optional Arguments, Alexis Roda, 2020/12/07
- Re: Optional Arguments, pietru, 2020/12/07
- Re: Optional Arguments, tomas, 2020/12/07
- Re: Optional Arguments, pietru, 2020/12/07
- Re: Optional Arguments, Arthur Miller, 2020/12/07
- Re: Optional Arguments, pietru, 2020/12/07
- Re: Optional Arguments, Stefan Monnier, 2020/12/07
- Re: Optional Arguments, pietru, 2020/12/07
- Re: Optional Arguments, Christopher Dimech, 2020/12/07