\s*#.*$ --- ... ] [ { } - + | > & * \s*(-|)?\s*[^\s]+\s*:(\s|$) \s+~\s*$ \s+null\s*$ \s+true\s*$ \s+false\s*$ \s+yes\s*$ \s+no\s*$ \s+on\s*$ \s+off\s*$ !!(map|seq|str|set|omap|binary) !![^\s]+ ![^\s]+