there seems to be some unexpected behaviour (at least for me) in terminal vim running under tmux:
pressing ESC and right after that the arrow keys to move around (vim purist need not comment on this) get interpreted as different vim commands: for example UP will enter insert mode again, LEFT, RIGHT send some deleting commands, DOWN moves the cursor around in mysterious ways. reproduced this in these environments: openbsd -current: urxvt + tmux + vim openbsd -current: xterm + tmux + vim osx: iterm2 + tmux 2.4 + vim 8.0.596 could not reproduce this on: openbsd 6.0 release leaving tmux always fixes the issue, so i am included to think it might be a tmux issue. any ideas? -f --
