font-arial

Install command: 
brew install --cask font-arial

Name: Arial

https://sourceforge.net/projects/corefonts/files/the%20fonts/final/

Cask JSON API: /api/cask/font-arial.json

Cask code: font-arial.rb on GitHub

Current version: latest

Current version requires: macOS >= 10.11

Analytics:

Installs (30 days)
font-arial 36
Installs (90 days)
font-arial 104
Installs (365 days)
font-arial 256
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