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# doclayout
## 0.4.0.1
* Add clause for Empty to renderList (#22).
* Remove upper bound for criterion
## 0.4
* Expose `unfoldD` [API change].
* Remove `realLengthNoShortcut`, `isEmojiModifier`, and
`isEmojiJoiner` [API change] (Stephen Morgan).
* Add new exported functions `realLengthNarrowContext`,
`realLengthWideContext`, `realLengthNarrowContextNoShortcut`,
`realLengthWideContextNoShortcut`, `isSkinToneModifier`, `isZWJ`
[API change] (Stephen Morgan).
* Compute `realLength` strictly.
* Make `getOffset` stricter.
* Drop support for ghc <= 8.4, add test for ghc 9.2.
* Don't collapse the CarriageReturn + Newline combination (#20).
We want to ensure that a literal starting with a Newline
doesn't lose the newline if it occurs after a CarriageReturn.
This affects code blocks in pandoc that begin with newlines.
* Improve performance of NoShortcut code (Stephen Morgan).
* Simplify emoji processing (Stephen Morgan).
* Add benchmarking for code with no shortcuts (Stephen Morgan).
* Add unicodeWidth.inc to cabal file.
* Fix `offset`, `minOffset`, `updateColumn` so they don't re-render.
* Get unicode block widths directly from the Unicode specification, rather
than writing it out ourselves (Stephen Morgan).
* Resolve the width of ambiguous characters based on their context
(Stephen Morgan).
* Spacing marks should have nonzero width, even though they are combining
characters (Stephen Morgan).
* Add shortcuts for extended Latin, Arabic, Cyrillic, Greek,
Devangari, Bengali, Korean, Telugu, and Tamil (Stephen Morgan).
* Fix location of extra-source-files in cabal.
* update.hs: require text package
* Handle emoji variation modifiers specially, so the keypad emoji can be
ignored (Stephen Morgan). This results in a 16% speedup of realLength
on ascii text.
* Add benchmarks for all scripts used by more than 50 million people, plus
a couple more. (#9, Stephen Morgan).
## 0.3.1.1
* Fix the end of the block of zero width characters which contains
the zero-width joiners and directional markings (Stephen Morgan, #5).
This fixes a regression introduced in 0.3.1, affecting code
points 0x2010 to 0x2030.
## 0.3.1
* Improved handling of emojis. Emojis are double-wide, but
previously this library did not treat them as such. We now
have comprehensive support of emojis, including variation
modifiers and zero-width joiners, verified by a test suite.
Performance has been confirmed to be no worse for text without emojis.
(Stephen Morgan, #1). API changes: export `realLengthNoShortcut`,
`isEmojiModifier`, `isEmojiVariation`, `isEmojiJoiner`.
## 0.3.0.2
* NOINLINE `literal` instead of `fromString` (#2, sjakobi).
This produces a further reduction in allocations and
pandoc compile time.
## 0.3.0.1
* NOINLINE `fromString` (#1).
@sjakobi reports that this change reduced total allocations
for building pandoc-2.12 with GHC 8.10.4 by 8.5% and reduced
peak allocations are reduced from 3854MB to 3389MB.
## 0.3
* Add foldlChar to signature of HasChars [API change].
* Use foldlChar in realLength. This avoids a stack overflow
we were getting with long strings in the previous version
(with foldrChar). See jgm/pandoc#6031.
* Replace isBlank with isBreakable and improved startsWithBlank.
Previously isBlank was used in the layout algorithm where
what we really wanted was isBreakable.
* Avoid unnecessary calculation in updateColumns.
* Replace a right fold with a strict left fold.
* Add strictness annotations in realLength and updateColumn.
## 0.2.0.1
* Made `realLength` smarter about combining characters.
If a string starts with a combining character, that character
takes up a width of 1; if the combining character occurs after
another character, it takes 0. See jgm/pandoc#5863.
* Improve `isBlank`, re-use in rendering code `for BreakingSpace`.
* Fixed incorrect `Text` width in renderig blocks.
## 0.2
* Add instances for `Doc`: `Data`, `Typeable`, `Ord`, `Read`, `Generic`.
* Add `literal` (like `text`, but polymorphic).
* Change some `IsString` constraints to `HasChars`.
* Add some default definitions for methods in `HasChars`.
* Change `offset` and `minOffset` to be more efficient (in
simple cases they no longer render and count line lengths).
* Add `updateColumn`.
* Fix problem with `lblock`/`cblock`/`rblock` when `chop` is
invoked. This caused very strange behavior in which text
got reversed in certain circumstances.
## 0.1
* Initial release.
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