stylish-haskell is a Haskell code formatter that focuses on tidying up common formatting issues without trying to reformat every expression in a source file. It is particularly useful for keeping imports, language pragmas and record declarations consistent.
Rather than enforcing a complete coding style, the application makes targeted changes that improve readability while leaving most of the original layout alone. Its behaviour can be customised through a YAML configuration file.
This is free and open source software.
Key Features
- Aligns and sorts import statements.
- Groups and wraps {-# LANGUAGE #-} pragmas, can remove (some) redundant pragmas.
- Removes trailing whitespace.
- Aligns branches in case and fields in records.
- Converts line endings (customizable).
- Replaces tabs by four spaces (turned off by default).
- Replaces some ASCII sequences by their Unicode equivalents (turned off by default).
- Format data constructors and fields in records.
- Integrates with Haskell Language Server for formatting within compatible editors.
Website: github.com/haskell/stylish-haskell
Support:
Developer: Jasper Van der Jeugt
License: 3-clause BSD License
stylish-haskell is written in Haskell. Learn Haskell with our recommended free books and free tutorials.
Related Software
| Haskell Linters | |
|---|---|
| Ormolu | Formatter for Haskell source code |
| HLint | Suggests improvements to Haskell code |
| Fourmolu | Formatter for Haskell source code, fork of Ormolu |
| LiquidHaskell | Refinement type checker for verifying properties of Haskell code |
| stylish-haskell | Simple Haskell code prettifier |
| hindent | Extensible Haskell pretty printer |
| Stan | Haskell STatic ANalyser |
| Floskell | Flexible Haskell source code pretty printer |
| Weeder | Perform whole-program dead-code analysis |
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