Slow down the speed of macros

[ghost]

IME will also change when a running macro entering/leaving insert mode.

[rlue]

This is an interesting problem. Here are the solutions, as I see them:

1. The easiest fix would be if there were a way to run system() commands asynchronously. Your system would still be asked to switch the IME every time your macro entered/exited insert mode, but at least it wouldn't slow down the macro.

   Unfortunately, I don't know of a platform-agnostic way to do this. It looks like :!start works on Windows, but I haven't found anything for Linux/Mac.

2. Another approach would be to detect when vim is executing a macro, and then suppress barbaric's system() function call during those times.

   However, AFAICT, there is no way to do this.

3. The only other fix I can think of is to remap @ to disable barbaric before running a macro, then re-enable it when the macro is finished.

Let me know if you come up with anything else.