Case Insentive custom grammar

Hello, Andrea,

You can have a look at the internal implementation of the built-in CSharpTagger by downloading the source code: https://docs.telerik.com/devtools/winforms/installation-and-upgrades/download-product-files 

In the CSharpTagger there is a StringPattern const defined. It represents the StringMatchingRegex pattern used to match strings in the documents which this tagger recognizes in the GetTags method. The SplitIntoWords method inheriting from the WordTaggerBase class is responsible for splitting the document into words. So if you want to achieve any parsing logic regarding the case insensitive text that is not currently available in RadSyntaxEditor, you have the possibility to do it.

The following tutorial demonstrates how to attach the Telerik source code to your project in order to investigate how the built-in CSharpTagger works and splits the words so you can use a similar approach:
https://docs.telerik.com/devtools/winforms/knowledge-base/attach-telerik-source-code-to-your-project

I hope this information helps. If you need any further assistance please don't hesitate to contact me. 

Regards,
Dess | Tech Support Engineer, Principal
Progress Telerik