Add experimental optimization to avoid dirtying single-char changes that do nothing and cursor movements that don't need to be drawn. Turn it on by setting the ExperimentalOptimizationsEnabled user default. Also draw each dirty rect rather than the bounding rect of all dirty rects

Do not call -refrsh every time a key is pressed because it makes scrolling in vim painfully slow (unless the input method editor is open)

Fix a bug where cmd-alt-click would move the cursor via placeCursorOnCurrentLineWithEvent:. Change it to not move the cursor if cmd is down

Fix how points are interpreted for accessibility w/r/t NSAccessibilityRangeForPositionParameterizedAttribute (they are in the screen coordinate space,not view coords). This broke three-finger-tap for dictionary lookup. Also don't output private-range chars to acccessibility

Change Edit>Reset to preserve prompt (assuming you run it at the shell), broken by change to fix RIS. Fixes bug 2528

Prevent assert in _findEntryBeforeOffset from firing; this seems to comport with the expected behavior documented by its caller. Fixes crashes like 1368452337.628220834

Prevent an assert from firing in accessibility code; just return NSNotFound instead (crash 1365066932.1521046750)

Fix crash when a window closes while waiting for confirmation about whether it can close (crash 1364036786.2098935319)

Fix RIS behavior

Make some changes to try to fix a common crash in setFastTimer when it's called from a notification when we become key