Case of line should be respected by ignorePattern in max-line-length

[ntwb]

Describe the issue. Is it a bug or a feature request (new rule, new option, etc.)?

A bug where trying to ignore multiple patterns using ignorePattern in the max-line-length rule

This is a follow up to #2630

Which rule, if any, is this issue related to?

max-line-length

What CSS is needed to reproduce this issue?

/*
Theme Name: Twenty Eleven
Theme URI: Theme URI: https://wordpress.org/themes/twentyeleven/styles/css/url/path/longer/than/80/chars
Author: the WordPress team
Author URI: https://wordpress.org/
Description: The 2011 theme for WordPress is sophisticated, lightweight, and adaptable.
Version: 2.6
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Tags: blog, one-column, two-columns, left-sidebar, right-sidebar, custom-background.
Text Domain: twentyeleven
*/

What stylelint configuration is needed to reproduce this issue?

   "max-line-length": [ 80, {
      "ignore": "non-comments",
      ignorePattern: ["/(https?:\/\/[0-9,a-z]*.*)|(Description\:.+)|(Tags\:.+)/"],
    } ],

Which version of stylelint are you using?

7.11.0

How are you running stylelint: CLI, PostCSS plugin, Node API?

CLI via stylelint test.css --config index.js

Does your issue relate to non-standard syntax (e.g. SCSS, nesting, etc.)?

No

What did you expect to happen?

No warnings to be flagged on lines 3, 6, and 10

What actually happened (e.g. what warnings or errors you are getting)?

The following warnings were flagged:

test.css
  3:106  ✖  Expected line length to be no more than 80 characters   max-line-length
  6:87   ✖  Expected line length to be no more than 80 characters   max-line-length
 10:84   ✖  Expected line length to be no more than 80 characters   max-line-length

Here's what a test of this I think should look like:

testRule(rule, {
  ruleName,
  config: [ 20, { ignorePattern: "/(multiple\:.+)|(should\:.+)" } ],

  accept: [{
    code: "/*\n multiple lines in multiline comments\n should be able to be ignored\n*/",
  }],

})

I've tried various regex g and m modifiers in ignorePattern such as these with no luck:
• ignorePattern: ["/(https?:\/\/[0-9,a-z]*.*)|(Description\:.+)|(Tags\:.+)/gm"],
• ignorePattern: ["/(https?:\/\/[0-9,a-z]*.*)|(Description\:.+)|(Tags\:.+)/g"],
• ignorePattern: ["/(https?:\/\/[0-9,a-z]*.*)|(Description\:.+)|(Tags\:.+)/m"],

[jeddy3]

Use /(https?:\/\/[0-9,a-z]*.*)|(description\\:.+)|(tags\\:.+)/. The line is lowercased before checking. We should change that behaviour in 8.0.0

[jeddy3]

Done in #2683