I've just released version 5.2.0 of the Minimum Profit Text Editor. It features the following:
filter_selection: to filter the selection (or the full document if no selection is done) through a system command.
exec_action: that shows a list of actions to execute on the current document.
cut_lines_with_string: that cuts to the clipboard all lines in a document or block that matches a regular expression.
insert_real_tab: bound to
shift-tab, to insert a tab character (\t) regardless of whatever is set in the
insert_next_item: to insert a new enumeration item in a document.
mp.config.hw_cursor: to activate the hardware cursor in text environments (disabled by default).
-txt: force text mode (instead of GUI).
eval_docact only on it.