Cargo Features

[dependencies]
cmdline_words_parser = { version = "0.2.1", default-features = false, features = ["std", "alloc"] }
default = std

The std feature is set by default whenever cmdline_words_parser is added without default-features = false somewhere in the dependency tree.

std default = alloc
alloc std

cmdline_words_parser has 3 features without comments.