Commandline is needlessly repainted with new extended keyboard input functionality

[zx8]

Commandline is needlessly repainted with new extended keyboard input functionality

[krobelus]

thanks, fixed in 1da2087

[zx8]

@krobelus This seems to have regressed(?) since 8a7c3ce.

It is now happening again(?) with 64bc989, albeit slightly differently than originally described in the initial issue.

I can no longer reproduce with the echo a/b/c/d/e example, but I can reproduce if I recall a command from history, like so:

[zanchey]

Do we need a test for this?

[krobelus]

Yeah a test would be good. At least on macOS it reproduces consistently, maybe even on BSD.
The implementation is very dated here, needs a proper cleanup.