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bug#38658: perl-mode: EOF in same color as here doc text
From: |
Lars Ingebrigtsen |
Subject: |
bug#38658: perl-mode: EOF in same color as here doc text |
Date: |
Thu, 06 Aug 2020 12:31:55 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
積丹尼 Dan Jacobson <jidanni@jidanni.org> writes:
> $ nl e.pl
> 1 print <<EOF;
> 2 bla
> 3 EOF
> $ emacs e.pl
>
> Why is line 1 in color A, and lines 2 and 3 in color B?
> How about instead lines 1 and 3 in color A, and line 2 in color B?
This is apparently due to the following code:
(defun perl-syntax-propertize-special-constructs (limit)
[...]
;; A Here document.
(let ((names (cdr (get-text-property (nth 8 state) 'syntax-table))))
(when (cdr names)
(setq names (reverse names))
;; Multiple heredocs on a single line, we have to search from the
;; beginning, since we don't know which names might be
;; before point.
(goto-char (nth 8 state)))
(while (and names
(re-search-forward
(pcase-let ((`(,name . ,indented) (pop names)))
(concat "^" (if indented "[ \t]*")
(regexp-quote name) "\n"))
limit 'move))
(unless names
(put-text-property (1- (point)) (point) 'syntax-table
(string-to-syntax "> c"))))))
We apparently want to put that syntax on at the end of the heredoc, but
stop fontifying at the start of the final EOF. I poked around a bit in
the code to see whether I could make it do that, and... I can't.
So I'm Cc-ing Stefan, who wrote this. :-)
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
- bug#38658: perl-mode: EOF in same color as here doc text,
Lars Ingebrigtsen <=