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How to force vim to syntax-highlight a file as html?

vim
vimrc
syntax-highlighting
filetype
Alex KataevbyAlex Kataev·Nov 7, 2024
TLDR

Want to quickly apply HTML highlighting to your Vim session? Enter :set ft=html while in command mode (hit Esc). Voilà, your file now paints in beautiful HTML syntax colors.

:set ft=html // Because we deserve colors more than black and white ;)

This single-line command converts your working file into an ephemeral Monet painting, flourishing with the tones of an HTML document.

Ensuring the color palette persists: Auto-highlighting with .vimrc

To make the colors stick, we need Vim to recognize certain file extensions (say, *.ezt) as HTML automatically. This magic trick requires an edit to our trusty .vimrc:

au BufReadPost *.ezt set syntax=html // Come on Vim, remember the colors!

This auto-command tells Vim to color every .ezt file like an HTML document. And always replace *.ezt with your characteristic file extension to make this trick work for you.

Comprehensive strategy for treating files as HTML

What if you could make Vim believe that a given file is HTML altogether? Like a changeling, Vim can be convinced to treat a file of arbitrary extension as HTML. Here's your spell: :set filetype=html.

:set filetype=html // A cat can be a dog in the world of Vim!

To ensure this magic potion keeps working for both new and existing .ezt files, inscribe this into your .vimrc:

au BufNewFile,BufRead *.ezt set filetype=html // You shall be HTML, now and forever!

Syntax and filetype: Two sides of the Vim coin

In Vim, there's Sylvia Syntax and Freddy Filetype - both nice buddies, but with different roles :

  • Miss Syntax paints your text in pretty colors.
  • Mr. Filetype tweaks indentations and jazzes up plugins too.

Take them to your party:

  • :set syntax=html invites Sylvia for a quick bash.
  • :set filetype=html brings Freddy along for a permanent soiree.

Waking up Vim's color memory

On sleepy Mondays, Vim might forget your colorful wishes. No worries! Just deliver a swift Ctrl+L to refresh your Vim window and remind it of your color preferences.

:x // save and quit :qa! // quit all without saving // You don't always need to save your colors!