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
View this message in rfc822 format
From: 牟 桐 <mou.tong <at> outlook.com>
To: 61472 <at> debbugs.gnu.org
Subject: bug#61472: 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
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locale-coding-system: utf-8-unix
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global-font-lock-mode: t
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size-indication-mode: t
column-number-mode: t
line-number-mode: t
transient-mark-mode: t
auto-composition-mode: t
auto-encryption-mode: t
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Load-path shadows:
/Users/mou/.emacs.d/etc/abbrev hides /Applications/Emacs.app/Contents/Resources/lisp/abbrev
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