Key matching

mpv maintains key press history. If the current key completes one or more bound sequences (including single-key bindings), then mpv chooses the longest. If this sequence is bound to ignore, then tracking continues as if nothing was matched. Otherwise, it triggers the command bound to this sequence and clears the key history.

Note that while single-key bindings override builtin bindings, this is not the case with multi-key sequences. For example, a b-c sequence in input.conf would be overridden by a builtin binding b. In this case, if you don't care about b, you can bind it to ignore.

As a more complex example, if you want to bind both b and a-b-c, then it won't work, because b would override a-b-c. However, binding a-b to ignore would allow that, because after a-b the longest match a-b is ignored, and a following c would trigger the sequence a-b-c while b alone would still work.