src: Update the macro register after each keypress

[lenormf]

No description provided.

[mawww]

Whats the goal there ? If its for displaying the keys being recorded, I think a hard coded behaviour in generate_context_info showing the keys in recording (<reg>=<keys>...) would be good enough.

[lenormf]

I don't care much for the issue, having the register up-to-date at any point in time makes more sense if it doesn't introduce new issues.

[mawww]

We are recording, it seems to make as much sense to consider the register should be updated once we finish recording than update it on the go. This is why I wonder if we have a use case for that feature, or if some behaviour gets better once we do that.

[lenormf]

One possible case would be the issue linked to this PR, I don't have any personal motivation to have that merged otherwise.

[mawww]

Reopen if we have a proper reason to do that, for now lets keep things simple.