gleam-lang/gleam

Formatter unnecessarily wraps expressions inside bit array size segments in a block.

Closed

#5,606 opened on Apr 11, 2026

View on GitHubContributor guide
 (3 comments) (0 reactions) (1 assignee)Rust (960 forks)batch import
help wanted

Repository metrics

Stars
 (21,417 stars)
PR merge metrics
 (Avg merge 10d 19h) (69 merged PRs in 30d)

Description

Given this like:

  let slice = <<bits:bits-size(count * marshal_zone_size)-unit(8)>>

The formatter will modify it to:

  let slice = <<bits:bits-size({ count * marshal_zone_size })-unit(8)>>

Even though the original is less than 80 characters wide.

Contributor guide

Research direction
Investigate the formatter's code for bit array size segments to understand why it wraps when it shouldn't. Look for the formatting rule that triggers the wrapping.
Tech stack
rust
Domain
tooling
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
RustGit
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
65