            doc\example2.md fenced blocks
----------------------------------------------------
block     line  test         TEXT or directive
type    number  role         quoted and one per line
----------------------------------------------------
python       9  skip-code    "print"
            14  skip-output
python      20  skip-code    "print"
            26  skip-output
            31  --
python      37  skip-code    "print"
python      44  skip-code    "print"
                             "len"
            51  skip-output
yaml        59  --
text        67  --
python      72  skip-code    "print"
            78  skip-output
----------------------------------------------------
0 test cases.
5 skipped code blocks.

  skip pattern matches (blank means no match)
------------------------------------------------
skip pattern  matching code block line number(s)
------------------------------------------------
print         9, 20, 37, 44, 72
len           44
------------------------------------------------
