shlex

Kinogaki's own shlex, published under the crates.io name so the frozen cc (blake3's build script, splitting CFLAGS-style variables) resolves to it through [patch.crates-io]. It is not upstream shlex: it has the one type cc uses.

Shlex splits a string into words as a POSIX shell would, without expansions: unquoted whitespace separates words; '...' is literal; "..." is literal except \ before $, `, ", \ or a newline; an unquoted \ takes the next character literally (and joins lines before a newline); # at the start of a word comments out the rest of its line. An unterminated quote or a trailing \ ends the words and sets had_error.