...or maybe it is (sigh).
No longer needed.
Kill extra H1 on GitHub, hopefully.
After Bill Gray: "touchoverlap() un-touches parts of lines (Issue #149)"
Redundant dereferences.
Update ncurses_tests to 6.4
"Fix text selection memory corruption with long codepoints", by
"subwin() made the subwindow one row/line too small when fed nlines=0