In Vim 7.3.1-762, mintty 1.1.2 (xterm), cygwin, Windows XP, the insert-mode map <F4> executes the intended key strokes at one time but inserts itself at another time. This undeterministic ...
When I hit the <s-f2> key to execute my nnoremap <s-f2> :set number! mapping Vim opens its "Insert" mode above (O) and types the 1;2Q string. In order to see the entire terminal key code – ...