gleam-lang/gleam

Gleam LSP won't show autocomplete on function return type

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#5,332 opened on Jan 28, 2026

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 (5 comments) (0 reactions) (0 assignees)Rust (960 forks)batch import
help wanted

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Description

How to reproduce:

  1. Type your function (fn square() -> I)
  2. After typing 'I' the LSP doesn't give 'Int' or other suggestion.

Gleam v1.14, tree-sitter-gleam v1.10

Contributor guide

Research direction
Trace the LSP autocomplete handler to see why return type suggestions are not triggered.
Tech stack
rust
Domain
developer experience
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
None
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50