Syntax highlight of Ruby is broken on percent notations

[alexr00]

Originally from @takaram in https://github.com/microsoft/vscode/issues/137713

Does this issue occur when all extensions are disabled?: Yes

• VS Code Version: 1.62.3, 1.63.0-insider
• OS Version: Windows_NT x64 10.0.19042

Steps to Reproduce:

1. Create .rb file
2. Input code like below

   puts %(() parentheses)
   puts %<{} braces>
   puts %Q{[] brackets}
   puts %r[[^a-z]]
   puts %(
   def foo()
   puts 123
   rescue
   nil
   end
   )
   puts %x(echo '() parentheses')

Expected: The literal is recognized as strings (or regexp) until the closing bracket. Specification of Ruby percent notations: http://www.chrisrolle.com/en/blog/ruby-percentage-notations

Actual:

[RedCMD]

@alexr00 This issue is actually caused by a VSCode textmate bug

https://github.com/microsoft/vscode-textmate/issues/140

Nested 'repository"'s only seem to work if there is no "match" or "begin" rule at the same level as it (or "include" if they are inside a "patterns" array vs a "repository" item)

a temp work around is to nest everything except the 'repository" into a "patterns" array

https://github.com/textmate/ruby.tmbundle/blob/efcb8941c701343f1b2e9fb105c678152fea6892/Syntaxes/Ruby.plist#L2136-L4209

[alexr00]

@RedCMD thank you for root causing this!