61720e0df9475af647de171f6b2964c36234961a in the Nim compiler introduced the bug
in this project. In brief, the upstream change flattens nnkStmtLists of one
item. Thus, quote do: followed by one statement is no longer a nnkStmtList
but whatever that one statement is. This breaks several macro implementations
where a quote do: form is initialized and then appended to. Based on Araq's
feedback (https://irclogs.nim-lang.org/02-10-2017.html#21:01:26), these
single-statement quotes are now converted into one-element statement lists as
necessary (behavior on old versions of the compiler is maintained).
flyx
commented
7 years ago
61720e0df9475af647de171f6b2964c36234961a in the Nim compiler introduced the bug in this project. In brief, the upstream change flattens
nnkStmtLists of one item. Thus,quote do:followed by one statement is no longer a nnkStmtList but whatever that one statement is. This breaks several macro implementations where aquote do:form is initialized and then appended to. Based on Araq's feedback (https://irclogs.nim-lang.org/02-10-2017.html#21:01:26), these single-statement quotes are now converted into one-element statement lists as necessary (behavior on old versions of the compiler is maintained).