User-reported unhelpful error message

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#1,791 opened on Mar 19, 2026 0 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty: 4/5
Estimated time: 3-5 days
Newbie friendliness: 35/100

Issue type: Bug
Clarity: Needs clarification
Activity status: Stale
Tech stack: haskell
Domain: compilers

Research direction

The issue names only a CodeWorld program URL and a Haskell parse error, so start by reproducing that program and locating the parser diagnostic path. Confirm what causes the repeated parenthesis suggestion; done should be a clear, accurate diagnostic for this input, with regression coverage if the project has a suitable test location.

Written by the indexing model from the issue text.

Description

Program: https://code.world/#PY_mFE2apufaKkR4Kr0GcGg

Comment:

it keeps saying I am missing a parantheses over and over and over again every time I add one it asks for another

Message:

program.hs:20:10: error:
    parse error
    • Are you missing a parenthesis?

Dominant language: Haskell
Stars: 1.3k
Forks: 201
PR merge metrics: No merged PRs in 30d

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