Cargo Features

teip has no features set by default.

[dependencies]
teip = { version = "2.2.0", features = ["oniguruma"] }
oniguruma = onig

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.

onig oniguruma?