Fish Esolang.vim

Installation

Using Vim Plug, add this to your vimrc:

call plug#begin('/path/to/your/plugins')
"your other plugins

Plug 'ethantrithon/fish-esolang.vim'

"...
call plug#end()

Overview

Adds syntax highlighting for the ><> esolang.

• Keyword color ><^vx/\|_# (Arrows, random, and mirrors)
• Statement color !?. (Jumps)
• Number color 0123456789abcdef (Hex-digits)
• Operator color +-*,%()= (All binary operators)
• String color '" (Quotes)
• Function color :~$@}{rl[]& (All stack-manipulating instructions)
• String color oni (Output char, output number, input char)
• Special color gp (Reflection instructions)
• Question color ; (End execution)
• Comment color EXAMPLE INVALID CODE (Any other character)

Additionally, horizontal strings in double quotes will be highlighted as with your string color as well (Vertical strings should therefore use single quotes if two of them begin on the same line in order to avoid messy highlighting).

Editing niceities

When opening a .fsh or .><> file, virtualedit will automatically be set to all so that you can move easily across the codebox. Also, there are custom functions which let you write (in replace mode) in the other 3 directions as well. When using these, you should use the <Del> key instead of <BS>. I've had some trouble remapping Backspace, but Delete has worked for me so far. Additionally, these different writing directions are automatically used if you type a ><> arrow in normal mode, so you can start typing in any direction easily. Note, this will also add the arrow you pressed to your code. You may also enter the directional writing modes via the commands WriteUp, WriteDown, and WriteLeft.

Screenshots

Code exmaples from the esolangs wiki

• Hello world
• Square root function
• FizzBuzz
• Fibonacci sequence
• Lucas sequence
• Quine (one line)
• Quine (2d)

Brainf*** interpreter from the esolangs wiki