Code block disabled with #if 0 is not grayed out

[barisdemiray]

Prerequisites

• [x] 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 code block is not grayed out when it is disabled with #if 0 and a corresponding #endif.

Steps to Reproduce

1. Type the snipped below and observe that it is highlighted as if it wasn't "disabled".

#if 0
        {
            cap >> frame;
            if (frame.empty())
            {
                waitKey();
                break;
            }
#endif

Expected behavior:

I'd expect it to be grayed out as if it was a comment line.

Actual behavior:

It is highlighted as if this block wasn't taken out of the build.

Reproduces how often:

Everytime.

Versions

Atom : 1.40.1 Electron: 3.1.10 Chrome : 66.0.3359.181 Node : 10.2.0

Additional Information

[rsese]

Thanks for the report! Reproduced with 1.42.0-nightly7 on macOS 10.14.6:

For comparison with Tree-sitter disabled and checking the scopes for any of the greyed out text: