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.
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.
Compare to Fira Mono (without ligatures):
Do not work:
- Atom (bug)
- SublimeText (vote here)
- Intellij Idea (vote here), including everything built on top of it (PhpStorm, PyCharm, RubyMine, WebStorm, AppCode, CLion, ReSharper)
- XCode
- iTerm 2 (feature request)
- OS X Terminal.app
- Emacs (workaround)
- gVim, MacVim
- Eclipse (Mac and Win, vote here)
- Notepad++
- Kate, Konsole, KWrite in KDE 4
- Xamarin Studio/Monodevelop
Do work:
- Visual Studio
- TextMate 2
- Coda 2
- Eclipse (Linux)
- QtCreator
- LightTable (instructions)
- BBEdit — enter this command in a terminal to enable ligatures:
defaults write com.barebones.bbedit "EnableFontLigatures_Fira Code" -bool YES
- RStudio
- Chocolat
- Kate, Konsole, KWrite in Plasma/KDE 5
- Kate, Konsole, KWrite in KDE 4 using Debian Jessie or OS X
Should work (copied from Hasklig README):
- Geany
- gEdit
- Smultron
- Vico
Note: I’m not a font designer, and Fira Code is built in sort of a hacky way from OTF version of Fira Mono. Please forgive me if it doesn’t work for you. Help will be greatly appreciated.
Ruby:
JavaScript:
Erlang:
Go:
Haskell:
Another monospaced fonts with ligatures:
- Hasklig (free)
- PragmataPro (€59)
- Monoid (free)
This work is based on OFL-licensed Fira Mono font. Original Fira Mono font was not changed, only extended
Fira Code was inspired by Hasklig font: Ligatures for Haskell code
0.6:
Redrawn from Fira Mono 3.204 (slightly heavier weight)
Added:
**
***
+++
--
---
?:
/=
/==
.=
^=
=~
?=
||=
|=
<<<
<=<
-<<
-<
>-
>>-
>=>
>>>
<*>
<|>
<$>
<+>
<!--
{-
-}
/**
\\
\\\
..<
??
|||
&&&
<|
|>
and Powerline support
0.5: #{
~-
-~
<==
==>
///
;;
</
0.4:
- Added
~=
~~
#[
- Rolled back
&&
and||
to more traditional look ===
and!==
are now rendered with 3 horisontal bars
0.3: ~@
#?
=:=
=<
0.2.1: Fixed width of &&
and ||
0.2: -->
<--
&&
||
=>>
=/=
0.1
>>=
=<<
<<=
->>
->
=>
<<-
<-
===
==
<=>
>=
<=
>>
<<
!==
!=
<>
:=
++
#(
#_
::
...
..
!!
//
/*
*/
/>