Can't convert expression when surrounded with parens using %*

[xmonader]

Using %* to convert a nim structure surrounded by parens crashes

Versions

Nim 0.18

How to reproduce

echo $(%*{"id": "myid"})

{"id":"myid"}

echo $(%*({"id": "myid"}))

stacktrace

lib/pure/json.nim(789, 36) Error: type mismatch: got <tuple of (string, string)>
but expected one of:
proc `%`(s: string): JsonNode
proc `%`(n: BiggestInt): JsonNode
proc `%`(n: float): JsonNode
proc `%`(b: bool): JsonNode
proc `%`(keyVals: openArray[tuple[key: string, val: JsonNode]]): JsonNode
template `%`(j: JsonNode): JsonNode
proc `%`[T](elements: openArray[T]): JsonNode
proc `%`(formatstr, a: string): string
proc `%`(formatstr: string; a: openArray[string]): string
proc `%`(f: string; t: StringTableRef; flags: set[FormatFlag] = {}): string
proc `%`(o: ref object): JsonNode
proc `%`(o: enum): JsonNode
proc `%`(o: object): JsonNode

[GULPF]

This is expected behavior. %* is a macro so it gets passed an unevaluated expression, which means that the surrounding () will prevent it from treating {} specially. It could theoretically strip any surrounding parens before doing anything else, but I don't think it would very useful.

[xmonader]

@GULPF I understand, I'm okay with proper documentation for the usage

[metagn]

This is the correct way to do what you want

echo $(`%*`({"id": "myid"}))

[Araq]

@GULPF I think it's better to support superfluous () in the macro as done in my patch.