[int_19h]

I think that one thing that we really need to revisit in PLs is sorting out different kinds of comments. Like, in most languages, a comment is just whitespace, with no semantic distinctions. More recently, docstrings got some special handling. But what's really needed is a kind of comment that's specifically about commenting out code; ideally, working on syntax tree level (so you can comment out one entire {...} block, say), and with the compiler being aware that the stuff inside is code, and handling it accordingly for purposes such as these.