When SQL used within a PHP string, interpolated PHP variables remain unstyled

[keevan]

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

Out of the box, VSCode seems to not encounter this particular issue with SQL highlighting within a PHP string. The highlighting seems to interpret the PHP variable as a string, when it probably should fallback to the language of the file / outer scope and check what sort of class it should have - in this particular case, it should be interpreted as a PHP variable.

Also, I might create another issue for the following, but not sure how easy it is to check for this problem:

• When using SQL inside a PHP string, it isn't styling joined strings (e.g. concat via .) and
• When starting the string with a lowercase select, this does not trigger SQL highlighting. I could override the styles and transform them to lowercase, but this might actually be a project's styling convention, to not have the code be screaming at you.

Steps to Reproduce

1. Create new file
2. Paste in the following:

<?php
  $editors = '"'.implode('","', ['vim', 'atom', 'vscode']).'"';
  $results = database::select_one_column(
      "SELECT user.id
         FROM user
        WHERE user.healthy = true
          AND user.editor IN ($editors)"
  );

Expected behavior:

$editors should be highlighted/styled like a PHP variable

Screenshot from VSCode

Actual behavior:

$editors is styled like any other plain PHP string.

Screenshot from Atom

Reproduces how often:

100% of the time

Versions

Atom : 1.58.0
Electron: 9.4.4
Chrome : 83.0.4103.122
Node : 12.14.1

apm 2.6.2
npm 6.14.13
node 12.14.1 x64
atom 1.58.0
python
git 2.25.1

Ubuntu 20

Additional Information

It applies the styles of syntax--source syntax--sql syntax--embedded syntax--php and takes the form of a text element.

It is also worth noting that disabling this package, will correctly display PHP string interpolation.