ruby: Add a new injection for regular expressions (#12533)

Vitaly Slobodin and Marshall Bowers created 2 years ago

# Summary

Hello. This pull request adds a new injection to `injections.scm` for
Ruby language to highlight regular expressions. Thanks.

## Before

![CleanShot 2024-05-31 at 16 25
46@2x](https://github.com/zed-industries/zed/assets/1894248/8b88718e-8f13-4d61-b6f9-6a25b3ebcc57)

## After


![after](https://github.com/zed-industries/zed/assets/1894248/e11f6ec3-45c6-40f8-b6d9-ddbfd16a3331)

Release Notes:

- N/A

Co-authored-by: Marshall Bowers <elliott.codes@gmail.com>

Change summary

extensions/ruby/languages/ruby/injections.scm | 4 ++++
1 file changed, 4 insertions(+)

Detailed changes

extensions/ruby/languages/ruby/injections.scm 🔗

@@ -2,3 +2,7 @@
   (heredoc_content) @content
   (heredoc_end) @language
   (#downcase! @language))
+
+((regex
+  (string_content) @content)
+  (#set! "language" "regex"))