Cargo Features

[dependencies]
s-expr = { version = "0.1.1", default-features = false, features = ["unicode"] }
default = unicode

The unicode feature is set by default whenever s-expr is added without default-features = false somewhere in the dependency tree.

unicode default = unicode-xid

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.

unicode-xid unicode