160 lines
4.8 KiB
Markdown
160 lines
4.8 KiB
Markdown
## Fira Code: monospaced font with programming ligatures
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<img src="https://dl.dropboxusercontent.com/u/561580/imgs/fira_code_logo.svg">
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#### [Download Fira Code v1.000](https://github.com/tonsky/FiraCode/releases/download/1.000/FiraCode_1.000.zip)
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### Problem
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Programmers use a lot of symbols, often encoded with several characters. For human brain sequences like `->`, `<=` or `:=` are single logical token, even if they take two or three places on the screen. Your eye spends non-zero amount of energy to scan, parse and join multiple characters into a single logical one. Ideally, all programming languages should be designed with full-fledged Unicode symbols for operators, but that’s not the case yet.
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### Solution
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Fira Code is a Fira Mono font extended with a set of ligatures for common programming multi-character combinations. This is just a font rendering feature: underlying code remains ASCII-compatible. This helps to read and understand code faster. For some frequent sequences like `..` or `//` ligatures allow us to correct spacing.
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<img src="./showcases/all_ligatures.png" />
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### Editor support
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Do **not** work:
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- SublimeText ([vote here](http://sublimetext.userecho.com/topic/433445-opentype-support-ligatures-curly-quotes-contextual-and-alternate-symbols/))
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- Intellij Idea ([vote here](https://youtrack.jetbrains.com/issue/IDEA-127539)), including everything built on top of it (PhpStorm, PyCharm, RubyMine, WebStorm, AppCode, CLion, ReSharper)
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- iTerm 2 ([feature request](https://gitlab.com/gnachman/iterm2/issues/3568))
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- OS X Terminal.app
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- Emacs ([workaround](https://github.com/tonsky/FiraCode/wiki/Setting-up-Emacs))
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- gVim, MacVim
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- Eclipse (Mac and Win, [vote here](https://bugs.eclipse.org/bugs/show_bug.cgi?id=398656))
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- Notepad++
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- Kate, Konsole, KWrite in KDE 4
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- Xamarin Studio/Monodevelop
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Do work:
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- Atom (since [1.1](http://blog.atom.io/2015/10/29/atom-1-1-is-out.html), add `atom-text-editor { text-rendering:optimizeLegibility }` to the stylesheet)
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- Xcode (with [this plugin](https://github.com/robertvojta/LigatureXcodePlugin))
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- Visual Studio
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- TextMate 2
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- Coda 2
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- Eclipse (Linux)
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- QtCreator
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- LightTable ([instructions](https://github.com/LightTable/LightTable/issues/1459#issuecomment-57366504))
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- BBEdit — enter this command in a terminal to enable ligatures:
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`defaults write com.barebones.bbedit "EnableFontLigatures_Fira Code" -bool YES`
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- RStudio
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- Chocolat
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- Kate, Konsole, KWrite in Plasma/KDE 5
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- Kate, Konsole, KWrite in KDE 4 using Debian Jessie or OS X
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- Mancy
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- TextAdept (Mac)
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Should work (copied from [Hasklig README](https://github.com/i-tu/Hasklig)):
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- Geany
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- gEdit
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- Smultron
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- Vico
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### Code examples
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Ruby:
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<img src="./showcases/ruby.png" />
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JavaScript:
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<img src="./showcases/javascript.png" />
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Erlang:
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<img src="./showcases/erlang.png" />
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Go:
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<img src="./showcases/go.png" />
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Haskell:
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<img src="./showcases/haskell.png" />
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### Alternatives
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Another monospaced fonts with ligatures:
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- [Hasklig](https://github.com/i-tu/Hasklig) (free)
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- [PragmataPro](http://www.fsd.it/fonts/pragmatapro.htm) (€59)
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- [Monoid](http://larsenwork.com/monoid/) (free)
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### Credits
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This work is based on OFL-licensed [Fira Mono font](https://github.com/mozilla/Fira). Original Fira Mono font was not changed, only extended.
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Fira Code was inspired by [Hasklig font](https://github.com/i-tu/Hasklig): Ligatures for Haskell code.
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Thanks Georg Seifert for providing a [Glyphs 2](https://glyphsapp.com) license.
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### Changelog
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**1.000**:
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Added weights:
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- Retina (just slightly bolder than Regular)
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- Medium
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- Bold
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Switched to `calt` instead of `liga`. You can now “step inside” the ligature in text editors.
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Fira Code is now drawn and built in Glyps 2 app (should improve compatibility).
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Added:
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`<->` `<~~` `<~` `~~~` `~>` `~~>`
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`<$` `<+` `<*` `*>` `+>` `$>`
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`;;;` `:::` `!!!` `???` `%%` `%%%` `##` `###` `####`
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`.-` `#_(` `=<` `**/` `0x` `www` `[]`
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Redrawn:
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`{-` `-}` `~=` `=~` `=<<` `>>=` `<$>` `<=>` `.=`
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Removed: `?:`
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Total ligatures count: 115
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**0.6**:
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Redrawn from Fira Mono 3.204 (slightly heavier weight)
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Added:
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`**` `***` `+++` `--` `---` `?:`
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`/=` `/==` `.=` `^=` `=~` `?=` `||=` `|=`
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`<<<` `<=<` `-<<` `-<` `>-` `>>-` `>=>` `>>>`
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`<*>` `<|>` `<$>` `<+>`
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`<!--` `{-` `-}` `/**` `\\` `\\\`
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`..<` `??` `|||` `&&&` `<|` `|>`
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and Powerline support
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**0.5**: `#{` `~-` `-~` `<==` `==>` `///` `;;` `</`
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**0.4**:
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- Added `~=` `~~` `#[`
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- Rolled back `&&` and `||` to more traditional look
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- `===` and `!==` are now rendered with 3 horisontal bars
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**0.3**: `~@` `#?` `=:=` `=<`
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**0.2.1**: Fixed width of `&&` and `||`
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**0.2**: `-->` `<--` `&&` `||` `=>>` `=/=`
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**0.1**
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`>>=` `=<<` `<<=` `->>` `->` `=>` `<<-` `<-`
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`===` `==` `<=>` `>=` `<=` `>>` `<<` `!==` `!=` `<>`
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`:=` `++` `#(` `#_`
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`::` `...` `..` `!!` `//` `/*` `*/` `/>`
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