Register `Brewfile`s as Ruby files (#2432)

A `Brewfile` (sometimes named `.Brewfile`) is a bundler for Homebrew packages.
Brewfiles are written in Ruby and are functionally similar to Gemfiles.

`homebrew-bundle` on GitHub: <https://github.com/Homebrew/homebrew-bundle>.
`brew bundle` Manpage: <https://docs.brew.sh/Manpage#bundle-subcommand>.

diff --git a/runtime/syntax/ruby.yaml b/runtime/syntax/ruby.yaml
index 9247b69196074b9d0be4fe3bd80905e681204685..c55feb4b6999c1e75faae139abe1cbdbdd3d2f8c 100644 (file)
--- a/runtime/syntax/ruby.yaml
+++ b/runtime/syntax/ruby.yaml
@@ -1,7 +1,7 @@
 filetype: ruby
 
 detect: 
-    filename: "\\.(rb|rake|gemspec)$|^(Gemfile|config.ru|Rakefile|Capfile|Vagrantfile|Guardfile|Appfile|Fastfile|Pluginfile|Podfile)$"
+    filename: "\\.(rb|rake|gemspec)$|^(Gemfile|config.ru|Rakefile|Capfile|Vagrantfile|Guardfile|Appfile|Fastfile|Pluginfile|Podfile|\\.?[Bb]rewfile)$"
     header: "^#!.*/(env +)?ruby( |$)"
 
 rules: