Pitch: Multi-statement if/switch/do expressions

[andrews05 (Andrew)]

I don't have strong opinions on the pitch, but I am strongly opposed to any "bare expression"/"last expression" concepts, on the grounds of readability. I'll link back to my comment on SE-0380 to show why:

SE-0380: `if` and `switch` expressions

Just wanted to chip in here as someone who has been working with Rust a lot lately. I am really not a fan of the "last expression" rule - I find it seriously hurts readability. This applies equally to function returns as to if expressions, particularly when the if block is quite long and the last expression is far from the line where it is being assigned to a variable. I think Swift has made a great choice with functions where the return is implicit for single lines only and I feel we would be …