Communications of the ACM has had unbelievably bad typography for code samples for decades (predating the web). No idea how this is allowed to continue.

I'm guessing someone pasted from what went into the print edition. Or Bjarne himself.

It's just the first code snippet that's messed up. The rest is merely wonky.

You don't use 10 spaces of indentation? It's the 21st century.

It’s a wchar_tab.