add a message fragment to the state

Match ATX heading start.

Try to match email autolink after first <, returning num of chars matched.

Try to match URI autolink after first <, returning number of chars matched.

Scan a closing code fence with length at least len.

Returns positive value if a URL begins in a way that is potentially dangerous, with javascript:, vbscript:, file:, or data:, otherwise 0.

Scans an entity. Returns number of chars matched.

Try to match an HTML block end line of type 1

Try to match an HTML block end line of type 2

Try to match an HTML block end line of type 3

Try to match an HTML block end line of type 4

Try to match an HTML block end line of type 5

Try to match an HTML block tag start line, returning an integer code for the type of block (1-6, matching the spec). #7 is handled by a separate funct

Try to match an HTML block tag start line of type 7, returning 7 if successful, 0 if not.

Try to match an HTML tag after first <, returning num of chars matched.

Try to match a link title (in single quotes, in double quotes, or in parentheses), returning number of chars matched. Allow one level of internal nes

Try to match a URL in a link or reference, return number of chars matched. This may optionally be contained in <..>; otherwise whitespace and unbalanc

Scan an opening code fence.

Try to match a scheme including colon.

Match setext heading line. Return 1 for level-1 heading, 2 for level-2, 0 for no match.

Match space characters, including newlines.

Scan a thematic break line: "...three or more hyphens, asterisks, or underscores on a line by themselves. If you wish, you may use spaces between the

static void alloc_cb(uv_handle_t *const handle, size_t const suggested_size, uv_buf_t *const buf) { }*/