I guess the indention sizer thing knows how the formater works and adjusts accordingly. I can't imagine it would be too much of a problem.

Iirc Jetbrain IDEs has a feature called dynamic tabs/space (or something like that) which uses exclusively tabs until it needs to align something and a tab doesn't fit, so it uses a few spaces instead.

Maybe alignment more for the righthand side of assignments. If you have a block of variables with different name lengths, or within a constructor / function call.

All parsers ignore a shitload of whitespace already. Just compare unformatted code, COMPLETELY unformatted code, code without character returns, and it'll become obvious how any given language is interpreted around whitespace.

Also fun to see just how infrequent a semicolon is 'actually' needed to tell when the end of a statement is here.