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authorNRK <nrk@disroot.org>2022-03-25 22:51:45 +0100
committerHiltjo Posthuma <hiltjo@codemadness.org>2022-03-25 22:53:50 +0100
commit6818e07291f3b2913e687c8ec3d3fe4711724050 (patch)
tree172a6b01df1b605d648ecefdd26f9cc98ed2788d /draw/draw.h
parentb43ec0577f2ad8ad33a0b893fe5360d966036786 (diff)
avoid redraw when there's no change
while i was timing the performance issue, i noticed that there was lots of random redrawing going on. turns out there were coming from here; if someone presses CTRL/ALT etc without pressing anything else, nothing will be inserted, so nothing will change. but the code will `break`, go down and do a needless redraw. this patch changes it to simply return if the keypress iscntrl() also avoid potential UB by casting *buf into an unsigned char.
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