Rule Change: Enforce strict syntax for @charset

[thecalamiity]

What rule do you want to change?

no-invalid-at-rules

What change do you want to make?

Generate more warnings

How do you think the change should be implemented?

A new default behavior

Example code

@charset 'iso-8859-15'; /* Invalid: single quotes */
@charset  "UTF-8";      /* Invalid: two spaces */

What does the rule currently do for this code?

Currently, the rule only checks if the prelude is a <string>, so both @charset 'iso-8859-15'; and @charset "UTF-8"; are not reported as errors.

What will the rule do after it's changed?

After the change, the rule will report an error for any @charset that:

• Does not use double quotes for the encoding,
• Does not have exactly one space after @charset,
• Is not immediately terminated with a semicolon.

Participation

• I am willing to submit a pull request to implement this change.

Additional comments

No response

[nzakas]

This sounds like a good idea. 👍