string_unescape_inplace
e->size = string_unescape_inplace(e->magic, UNESCAPE_HEX);
string_unescape_inplace(e->mask, UNESCAPE_HEX) != e->size)
seq_commit(seq, string_unescape_inplace(seq->buf + start, UNESCAPE_OCTAL));
seq_commit(seq, string_unescape_inplace(seq->buf + start, UNESCAPE_OCTAL));
string_unescape_inplace(arg, UNESCAPE_SPACE |
q_real = string_unescape_inplace(out_real, flags);