minirst: make format() simply return a formatted text It's a source of bugs to change the type of the return value conditionally.

help: reorder section filtering flow to not format help text twice

help: inline minirst.format() I'm going to make minirst.format() always returns a formatted text, not text | (text, pruned).

minirst: extract function that formats parsed blocks as plain text

minirst: unindent "if True" block in filtersections()

minirst: extract function that filters parsed blocks by section name I'll move some bits from minirst.format() to caller to make the function interface simpler.