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underscores for routine parameters (#21192)

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* underscores for routine parameters

fixes #13443, fixes #13804, refs #21121

* add changelog + more tests

* support generics and ensure inferred lambdas work
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metagn 2023-01-08 08:49:49 +03:00 • committed by GitHub
commit 05c6db6500
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5 changed files with 131 additions and 3 deletions
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compiler/semtempl.nim
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@ -642,8 +642,9 @@ proc semTemplateDef(c: PContext, n: PNode): PNode =
# body by the absence of the sfGenSym flag:
for i in 1..<s.typ.n.len:
let param = s.typ.n[i].sym
param.flags.incl sfTemplateParam
param.flags.excl sfGenSym
if param.name.s != "_":
param.flags.incl sfTemplateParam
param.flags.excl sfGenSym
if param.typ.kind != tyUntyped: allUntyped = false
else:
s.typ = newTypeS(tyProc, c)