fantomas 8.0.6
dotnet tool install --global fantomas --version 8.0.6
dotnet new tool-manifest
dotnet tool install --local fantomas --version 8.0.6
#tool dotnet:?package=fantomas&version=8.0.6
nuke :add-package fantomas --version 8.0.6
Fantomas
An opinionated F# source code formatter.
dotnet tool install fantomas
Documentation is available at https://fsprojects.github.io/fantomas/docs/
If you point a coding agent at Fantomas, give it llms.txt for an index of the documentation, or llms-full.txt for all of it in one file.
Reporting a bug
Report bugs through the online tool, which opens an issue with everything needed to reproduce it.
With a coding agent, the fantomas-report skill shrinks the file Fantomas failed on to a minimal sample and opens the same issue form for you to review:
npx skills add fsprojects/fantomas --skill fantomas-report -g
See Reporting a bug for more.
Contributing Guidelines
See the Contribution Guidelines and our contributors documentation
| Product | Versions Compatible and additional computed target framework versions. |
|---|---|
| .NET | net10.0 is compatible. net10.0-android was computed. net10.0-browser was computed. net10.0-ios was computed. net10.0-maccatalyst was computed. net10.0-macos was computed. net10.0-tvos was computed. net10.0-windows was computed. |
This package has no dependencies.
| Version | Downloads | Last Updated |
|---|---|---|
| 8.0.6 | 923 | 10/1/2026 |
| 8.0.5 | 7,010 | 9/25/2026 |
| 8.0.4 | 1,815 | 9/23/2026 |
| 8.0.3 | 425 | 9/23/2026 |
| 8.0.2 | 3,924 | 9/22/2026 |
| 8.0.1 | 1,634 | 9/21/2026 |
| 8.0.0 | 25,743 | 9/15/2026 |
| 8.0.0-beta-003 | 1,013 | 9/12/2026 |
| 8.0.0-beta-002 | 328 | 9/8/2026 |
| 8.0.0-beta-001 | 803 | 9/1/2026 |
| 8.0.0-alpha-026 | 346 | 8/29/2026 |
| 8.0.0-alpha-025 | 231 | 8/28/2026 |
| 8.0.0-alpha-024 | 129 | 8/28/2026 |
| 8.0.0-alpha-023 | 137 | 8/28/2026 |
| 8.0.0-alpha-022 | 353 | 8/27/2026 |
| 8.0.0-alpha-021 | 118 | 8/27/2026 |
| 8.0.0-alpha-020 | 133 | 8/27/2026 |
| 8.0.0-alpha-019 | 462 | 8/26/2026 |
| 8.0.0-alpha-018 | 125 | 8/26/2026 |
| 8.0.0-alpha-017 | 3,412 | 8/25/2026 |
### Changed
- Update FCS to 'Record the range of the `of` keyword in SynUnionCaseTrivia', commit 5e9647f158fe282462aba57ed83ada910a91b90e [#3502](https://github.com/fsprojects/fantomas/pull/3502)
### Fixed
- Wrong change of comment's position. The syntax tree had no range for the `of` keyword of a union case or exception, so a block comment after it, as in `exception E of (*name*) string`, was attached to the case name and printed in front of `of`. The parser now records that range, and the comment stays after the keyword. [#1959](https://github.com/fsprojects/fantomas/issues/1959)
- Cursor is lost when placed on `if`, `then` or `else if` keywords. The cursor now keeps its place on `if`, `elif`, `else if`, `then`, `match`, `match!` and `with`. [#3387](https://github.com/fsprojects/fantomas/issues/3387)
- Cursor is lost when placed on the closing bracket of a multiline list or array in the cramped style. [#3506](https://github.com/fsprojects/fantomas/pull/3506)