[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
bug#27229: eldoc wrong highlighting for "when"
From: |
Lars Ingebrigtsen |
Subject: |
bug#27229: eldoc wrong highlighting for "when" |
Date: |
Fri, 03 Sep 2021 10:31:19 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
Michael Heerdegen <michael_heerdegen@web.de> writes:
>> > From emacs -q, type "(when x y z": COND is highlighted
>> > instead of BODY. This is a regression from the behavior
>> > of 24.5 (with eldoc-mode on).
>>
>> I can reproduce this on current master.
>
> Seems this code is the culprit (`elisp--highlight-function-argument'):
>
> | ;; Back to index 0 in ARG1 ARG2 ARG2 ARG3 etc...
> | ;; like in `setq'.
> | ((or (and (string-match-p "\\.\\.\\.\\'" argument)
> | (string= argument (car (last args-lst))))
> | (and (string-match-p "\\.\\.\\.\\'"
> | (substring args 1 (1- (length args))))
> | (= (length (remove "..." args-lst)) 2)
> | (> index 1) (eq (logand index 1) 1)))
> | (setq index 0))
>
> In general, the problem is that "..." can have different meanings (it's
> not clear which arguments have to be repeated), so this is not trivial
> to fix I think.
I wonder -- why is this defined like this, anyway?
(defmacro when (cond &rest body)
"If COND yields non-nil, do BODY, else return nil.
When COND yields non-nil, eval BODY forms sequentially and return
value of last one, or nil if there are none.
\(fn COND BODY...)"
(when COND &rest BODY)
is the correct signature, isn't it? Removing the (fn ...) from the doc
string makes eldoc do the correct thing.
The commit message is helpful:
commit 7f67eea000b0ba102dd86c2666041dc395137413
Author: Kim F. Storm <storm@cua.dk>
AuthorDate: Sun Mar 18 00:44:24 2007 +0000
(when, unless): Doc fix.
Anybody know what the point of the (fn...) here is?
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
- bug#27229: eldoc wrong highlighting for "when",
Lars Ingebrigtsen <=