Script tag highlighting inconsistent with browser behaviour

[KernelDeimos]

Prerequisites

• Put an X between the brackets on this line if you have done all of the following:
  • Reproduced the problem in Safe Mode: https://flight-manual.atom.io/hacking-atom/sections/debugging/#using-safe-mode
  • Followed all applicable steps in the debugging guide: https://flight-manual.atom.io/hacking-atom/sections/debugging/
  • Checked the FAQs on the message board for common solutions: https://discuss.atom.io/c/faq
  • Checked that your issue isn't already filed: https://github.com/issues?utf8=✓&q=is%3Aissue+user%3Aatom
  • Checked that there is not already an Atom package that provides the described functionality: https://atom.io/packages

Description

A browser will find the first closing script tag regardless of what Javascript syntax is surrounding it. In Atom, the javascript syntax seems to take precedence over the HTML, such that a terminating script tag within quotes doesn't render properly. This can lead to confusion when it doesn't work as shown in a browser.

Steps to Reproduce

1. Create an HTML file
2. Add an inline script tag
3. Write some string in the javascript containing an unescaped </script>

Expected behavior:

HTML syntax highlighting should resume immediately after the first closing script tag

Actual behavior:

Javascript syntax highlighting continues as if a closing script tag is valid in a string

Reproduces how often:

Consistently, but only when #242 doesn't occur.

Versions

Atom : 1.53.0
Electron: 6.1.12
Chrome : 76.0.3809.146
Node : 12.4.0

Additional Information