[Issue 24346] Lambda as UDA is valid but spec requires brackets

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=24346

hsteoh at qfbox.info changed:

           What    |Removed                     |Added
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                 CC|                            |hsteoh at qfbox.info

--- Comment #1 from hsteoh at qfbox.info ---
I'm inclined to say that parentheses should be required, for consistency with
the single-token requirement on unparenthesized UDAs. (Cf also binary `!`
syntax, where the unparenthesized version also requires exactly 1 token, and in
all other cases parentheses are required.)

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