Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This redefines expr_if as a condition, if block, and optional else expression, which may be either expr_if or expr_block. You preferred this option less than the existing definition last time around, but marijn expressed a preference for this one, and it makes most code paths involved simpler, so I'm proposing it again.
Please note what I did in 2a66294 though. I removed some generated code around expr_block to remove a FIXME. The tests still pass, but I can't say that I really understood what I changed.