Cargo Features

[dependencies]
or-rs-macros = { version = "0.1.1", default-features = false, features = ["macro_error_debugging"] }
default = proc-macro2

The proc-macro2 feature is set by default whenever or-rs-macros is added without default-features = false somewhere in the dependency tree.

macro_error_debugging = colored

Enables span-locations of proc-macro2

proc-macro2:

Expose methods Span::start and Span::end which give the line/column location of a token.

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

colored macro_error_debugging?
proc-macro2 default macro_error_debugging?