# [1.7.2] – April 2026
- [Add `PrettyAnn` type class](https://github.com/quchen/prettyprinter/pull/256)
- [Remove the MINIMAL pragma from `Pretty`](https://github.com/quchen/prettyprinter/pull/219)
- [Add instance `ann ~ Void => Pretty (Doc ann)`](https://github.com/quchen/prettyprinter/pull/234)
- [Add `Pretty` instances for 4-7 tuples](https://github.com/quchen/prettyprinter/pull/275)
- [Make it compile with MicroHs](https://github.com/quchen/prettyprinter/pull/270)
- [Drop support for GHC 7](https://github.com/quchen/prettyprinter/pull/278)
- [Remove compatibility code for GHC < 8](https://github.com/quchen/prettyprinter/pull/285)
- Documentation improvements:
* [#229](https://github.com/quchen/prettyprinter/pull/229)
* [#255](https://github.com/quchen/prettyprinter/pull/255)
* [#273](https://github.com/quchen/prettyprinter/pull/273)
[1.7.2]: https://github.com/quchen/prettyprinter/compare/v1.7.1...v1.7.2
# [1.7.1]
- [Deprecate the `Data.Text.Prettyprint.*` modules](https://github.com/quchen/prettyprinter/pull/203)
* Users should migrate to the new `Prettyprinter` module hierarchy.
* The old modules will be removed no sooner than September 2022.
- [Make `text` an optional dependency:](https://github.com/quchen/prettyprinter/pull/202)
* When built with `-f-text`, any `text`-based APIs will operate on `String`s instead.
- Documentation improvements:
* [#194](https://github.com/quchen/prettyprinter/pull/194)
* [`1f0bffe`](https://github.com/quchen/prettyprinter/commit/1f0bffe5eb53874d1ba46b0a80bda67c02365f1b)
[1.7.1]: https://github.com/quchen/prettyprinter/compare/v1.7.0...v1.7.1
# [1.7.0]
## Breaking changes
- [Fix `layoutPretty` and `layoutSmart` so they don't produce trailing whitespace as a result of indenting empty lines.](https://github.com/quchen/prettyprinter/pull/139)
* Users of `removeTrailingWhitespace` should check whether it is still needed.
- [Use `floor` instead of `round` to compute ribbon width.](https://github.com/quchen/prettyprinter/pull/160)
- [Remove deprecated `Data.Text.Prettyprint.Doc.Render.ShowS` module.](https://github.com/quchen/prettyprinter/pull/173)
- [Add optimized implementation of `stimes` for `Doc`.](https://github.com/quchen/prettyprinter/pull/135)
- [Generalize the type of `layoutCompact` to clarify that it doesn't preserve annotations.](https://github.com/quchen/prettyprinter/pull/183)
- [Add strictness annotations in `SimpleDocStream` and `PageWidth`.](https://github.com/quchen/prettyprinter/pull/129)
## Non-breaking changes
- [Add shallower `Prettyprinter` module hierarchy exposing the same API.](https://github.com/quchen/prettyprinter/pull/174)
* The current plan for the existing `Data.Text.Prettyprint.Doc*` modules is:
* Start deprecation in early 2021.
* Remove the modules after a deprecation period of at least one year.
- [Fix build with GHC 7.4.](https://github.com/quchen/prettyprinter/pull/187)
- Various documentation improvements.
[1.7.0]: https://github.com/quchen/prettyprinter/compare/v1.6.2...v1.7.0
# 1.6.2
- Speed up rendering to lazy and strict `Text`.
- Documentation improvements for `group` and `flatAlt`.
- Internal refactoring of the `layoutWadlerLeijen`-based layouters.
# 1.6.1
- Slightly reduce the scope of the fitting predicates for some edge cases.
- Use an export list in `Data.Text.Prettyprint.Doc.Internal`.
- Improve `group` for `Union` and `FlatAlt`.
- Speed up `removeTrailingWhitespace`.
- Improve generating spaces for indentation and `spaces`.
- Simplify some `Doc` constants by defining them as `Doc` literals.
- Enable `-O2`.
- Various documentation fixes and improvements.
# 1.6.0
## Breaking changes
- Fix `fuse`'s handling of annotated documents:
- Don't remove annotations on empty documents.
- Apply fusion within annotations.
- Fix layouting of hard linebreaks with `Unbounded` page widths.
## Non-breaking changes
- Speed up `group` for documents containing linebreaks and previously
`group`ed documents.
- Add debugging helpers in `Data.Text.Prettyprint.Doc.Internal.Debug`
- Documentation improvements and fixes
# 1.5.1
- Removing trailing whitespace sometimes restored necessary whitespace in the
wrong spot
# 1.5
- Fix inconsistent formatting within align and wide sub-docs on narrow layouts
# 1.4
- Add fixity declaration to `<+>`, matching `<>`
- Fix removal of trailing whitespace
# 1.3.0.1
- Support Stack 2
# 1.3.0
- Add alignment to Pretty [a] instance
- Fix removal of blank lines in `removeTrailingWhitespace`
- Widened support for GHC versions 7.4–8.8
# 1.2.1.1
- Fix dependency of doctest suite
# 1.2.1
- Add function to trim trailing space in layouted `SimpleDocStream`,
`removeTrailingWhitespace`
- Add `Pretty` instances for `Identity` and `Const`
# 1.2.0.1
- Fix `alterAnnotationsS` (and thus `unAnnotateS`), which removed pushing, but
not popping, style frames. This led to them throwing errors in pretty much all
use cases.
# 1.2
- `encloseSep` does no longer include an `align` wrapper; in other words,
```haskell
encloseSep_old … = align (encloseSep_new …)
```
- Change the default ribbon fraction to 1 (was 0.4)
- Expose `viaShow` and `unsafeViaShow` from the public module
- Fix `layoutSmart` behaving as if there was no space left for unbounded pages
# 1.1.1
- Add `panicPeekedEmpty` and `panicPoppedEmpty` to the panic module
# 1.1.0.1
- Rendering directly to a handle is now more efficient in the `Text` renderer,
since no intermediate `Text` is generated anymore.
- Remove upper version bounds from `.cabal` files
# 1.1
- Allow `alterAnnotations` to convert one annotation to multiple ones, to
support e.g. `Keyword ---> Green+Bold`
- Remove `Pretty` instance for `Doc`: the implicit un-annotation done by it did
more harm than good.
# 1.0.1
- Add `alterAnnotations`, which allows changing or removing annotations.
`reAnnotate` and `unAnnotate` are now special cases of this.
- Fix »group« potentially taking exponential time, by making the (internal)
`flatten` function detect whether it is going to have any effect inside
`group`.
- Add proper version bounds for all dependencies and backport them to version 1
- Haddock: example for `Pretty Void`
# 1
- Add Foldable/Traversable instances for `SimpleDocTree`, `SimpleDocStream`
- Add Functor instances for `Doc`, `SimpleDocTree`, `SimpleDocStream`
- Add the simplified renderers `renderSimplyDecorated` and
`renderSimplyDecoratedA` to the tree and stack renderer modules
- Lots of typo fixes and doc tweaks
- Add a changelog :-)
# 0.1
Initial release.