vim-fish-syntax

Syntax and ftplugin files for fish shell scripts

Installation

I recommend the native packages support built into Vim8 and Neovim, but you can use any plugin manager you like.

Features aplenty

• Syntax highlighting and filetype detection, of course.
• Code formatting with fish_indent.
• Fold expressions for automatic folding.
• Omni-complete from fish using the ^X^O command.
• Comment strings & matchit patterns.

For everything above to work you need to have fish installed in $PATH and some Vim features turned on. First, tell Vim to use the syntax and filetype functionality, in your vimrc:

syntax enable
filetype plugin indent on

The above commands are required only for Vim and not for Neovim (which I personally use and recommend over vanilla Vim).

Teach a Vim to fish...

Vim needs a more POSIX compatible shell than fish for certain functionality to work, such as :%!, compressed help pages and many third-party plugins. If you use fish as your login shell, you need to set shell to something else in your vimrc, for example:

if &shell =~# 'fish$'
    set shell=sh
endif

Best do it somewhere at the top, before any plugin code is loaded and executed.