Package: emacs;
Reported by: 牟 桐 <mou.tong <at> outlook.com>
Date: Mon, 13 Feb 2023 09:16:02 UTC
Severity: normal
Found in version 29.0.60
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bug-gnu-emacs <at> gnu.org:bug#61472; Package emacs.
(Mon, 13 Feb 2023 09:16:02 GMT) Full text and rfc822 format available.牟 桐 <mou.tong <at> outlook.com>:bug-gnu-emacs <at> gnu.org.
(Mon, 13 Feb 2023 09:16:02 GMT) Full text and rfc822 format available.Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):
From: 牟 桐 <mou.tong <at> outlook.com>
To: "bug-gnu-emacs <at> gnu.org" <bug-gnu-emacs <at> gnu.org>
Subject: 29.0.60; css{-ts}-mode highlight problem
Date: Mon, 13 Feb 2023 09:10:46 +0000
Hi there,
I met a css-mode's highlight problem.
Create a test.css file:
``` css-ts-mode
.test\.123 {
color: red;
}
.test\#123 {
color: blue;
}
.test\@123 {
color: green;
}
.test\<123 {
color: brown;
}
.test\`123 {
color: purple;
}
.test\~123 {
color: tomato;
}
```
Then import the css file in the test.html file:
``` html-ts-mode
<head>
<link rel="stylesheet" type="text/css" href="./test.css" />
</head>
<body>
<div class="test.123">test.123</div>
<div class="test#123">test#123</div>
<div class="test <at> 123">test <at> 123</div>
<div class="test<123">test<123</div>
<div class="test`123">test`123</div>
<div class="test~123">test~123</div>
</body>
```
We can see all of the div inner text are colored correctly, but when
using css-ts-mode, there will be an error face after the escaped
character `\.123` and so on; on `css-mode`, these css class names are not
highlighted.
When I'm checking the [offical
doc](https://www.w3.org/TR/CSS21/syndata.html#characters), I saw that
> In CSS, identifiers can contain only the characters [a-zA-Z0-9] and
> ISO 10646 characters U+00A0 and higher, plus the hyphen (-) and the
> underscore (_)
I don't know whether the major mode is designed to work like this (since
the official said the `.` `#` ... are invalid, perhaps the browser made
them work) or is the major mode's bug.
Thanks ;)
In GNU Emacs 29.0.60 (build 1, x86_64-apple-darwin21.6.0, NS
appkit-2113.60 Version 12.6.3 (Build 21G419)) of 2023-02-13 built on
dalum.local
Repository revision: f49caaa892576e5fa95373c38e6a99904249551c
Repository branch: emacs-29
Windowing system distributor 'Apple', version 10.3.2113
System Description: macOS 12.6.3
Configured using:
'configure --with-native-compilation=aot'
Configured features:
ACL DBUS GIF GLIB GMP GNUTLS JPEG JSON LCMS2 LIBXML2 MODULES NATIVE_COMP
NOTIFY KQUEUE NS PDUMPER PNG RSVG SQLITE3 THREADS TIFF
TOOLKIT_SCROLL_BARS TREE_SITTER WEBP XIM ZLIB
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locale-coding-system: utf-8-unix
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/Users/mou/.emacs.d/etc/abbrev hides /Applications/Emacs.app/Contents/Resources/lisp/abbrev
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bug-gnu-emacs <at> gnu.org:bug#61472; Package emacs.
(Tue, 14 Feb 2023 01:27:01 GMT) Full text and rfc822 format available.Message #8 received at 61472 <at> debbugs.gnu.org (full text, mbox):
From: Dmitry Gutov <dgutov <at> yandex.ru>
To: 牟 桐 <mou.tong <at> outlook.com>, 61472 <at> debbugs.gnu.org
Subject: Re: bug#61472: 29.0.60; css{-ts}-mode highlight problem
Date: Tue, 14 Feb 2023 03:26:04 +0200
On 13/02/2023 11:10, 牟 桐 wrote: > When I'm checking the [offical > doc](https://www.w3.org/TR/CSS21/syndata.html#characters), I saw that > >> In CSS, identifiers can contain only the characters [a-zA-Z0-9] and >> ISO 10646 characters U+00A0 and higher, plus the hyphen (-) and the >> underscore (_) > I don't know whether the major mode is designed to work like this (since > the official said the `.` `#` ... are invalid, perhaps the browser made > them work) or is the major mode's bug. > > Thanks 😉 The parser indeed doesn't seem to be able to parse that text. I'm not sure whether it's an unofficial extension, or it's simply not expected to work in CSS files. If it's the former, and the browsers support it, filing an issue at the grammar repo could help: https://github.com/tree-sitter/tree-sitter-css/issues If it's the latter, here's some advice at the end of this answer: https://stackoverflow.com/a/32273294/615245 (to use ~=).
bug-gnu-emacs <at> gnu.org:bug#61472; Package emacs.
(Thu, 30 Mar 2023 04:40:02 GMT) Full text and rfc822 format available.Message #11 received at 61472 <at> debbugs.gnu.org (full text, mbox):
From: 牟 桐 <mou.tong <at> outlook.com>
To: Dmitry Gutov <dgutov <at> yandex.ru>, "61472 <at> debbugs.gnu.org"
<61472 <at> debbugs.gnu.org>
Subject: bug#61472: 29.0.60; css{-ts}-mode highlight problem
Date: Thu, 30 Mar 2023 04:39:44 +0000
[Message part 1 (text/plain, inline)]
> The parser indeed doesn't seem to be able to parse that text. I apologize for not responding to your message earlier; I did not receive a notification from my email. Upon checking the website archive, I realized that you had responded to my question. It is recommended to avoid using behaviors that are not defined in official documents. As I am not familiar with tree-sitter, I may need some time to investigate whether the issue is related to the parser or not. Thx for your advice ;)
[Message part 2 (text/html, inline)]
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