rust-lang/rfcs — pull request #92 by nick29581 (2014-05-28 01:16:45+00:00)
Title: Disallow struct literals in ambiguous positions.

Do not identify struct literals by searching for `:`. Instead define a sub-category of expressions which excludes struct literals and re-define `for`, `if`, and other expressions which take an expression followed by a block (or non-terminal which can be replaced by a block) to take this sub-category, instead of all expressions.