{"ast_node_type":"other","tokens":[{"end":53,"kind":"keyword","start":0,"text":"//"}]}
    // Apparently clang and gcc *only* escape spaces:
fn escape_dep_filename(filename: &str) -> String {
    // https://llvm.org/klaus/clang/commit/9d50634cfc268ecc9a7250226dd5ca0e945240d4