Tracking issue for RFC 3695: Allow boolean literals as cfg predicates

[clubby789]

This is a tracking issue for the RFC "Allow boolean literals as cfg predicates" (rust-lang/rfcs/#3695).
The feature gate for the issue is #![feature(cfg_boolean_literals)].

About tracking issues

Tracking issues are used to record the overall progress of implementation.
They are also used as hubs connecting to other relevant issues, e.g., bugs or open design questions.
A tracking issue is however not meant for large scale discussion, questions, or bug reports about a feature.
Instead, open a dedicated issue for the specific matter and add the relevant feature gate label.
Discussion comments will get marked as off-topic or deleted.
Repeated discussions on the tracking issue may lead to the tracking issue getting locked.

Steps

• Accept an RFC.
  • RFC: Allow boolean literals as cfg predicates rfcs#3695
• Implement in nightly.
  • Implement RFC3695 Allow boolean literals as cfg predicates #131034
• Add documentation to the dev guide.
  • See the instructions.
• Add documentation to the reference.
  • See the instructions.
• Add formatting for new syntax to the style guide.
  • See the nightly style procedure.
• Stabilize.
  • See the instructions.

Unresolved Questions

None.

Related

• Implement RFC3695 Allow boolean literals as cfg predicates #131034