Cargo Features

[dependencies]
etch = { version = "0.4.2", default-features = false, features = ["syntect-plugin"] }
default = syntect-plugin

The syntect-plugin feature is set by default whenever etch is added without default-features = false somewhere in the dependency tree.

syntect-plugin default = syntect

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.

syntect syntect-plugin

Enables syntect ^3