Fix lambda expressions not parenthesized on right side of operators#132
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mdgriffith merged 1 commit intomdgriffith:mainfrom Mar 31, 2026
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When a lambda appeared as the right operand of |> (or any infix
operator), it was rendered without parentheses:
"hello" |> \x -> x
This is ambiguous in Elm — a chained `a |> \x -> b |> \y -> c`
parses the second |> as part of the first lambda's body.
The fix adds parenthesization in the pretty-printer
(prettyOperatorApplication in Write.elm) when the right operand
is a LambdaExpression, producing:
"hello" |> (\x -> x)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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When a lambda appeared as the right operand of
|>or any infix operator, it was rendered without parentheses:This could cause ambiguous Elm code and compiler errors. The fix adds parens in the pretty-printer when the right operand is a
LambdaExpressionnow: