Do any languages besides Ada use an identifier naming convention that merges PascalCase and snake_case like Ada_Identifier_Name? Popular languages like Python, Ruby, and Rust already mix both PascalCase and snake_case (for class and function names, respectively), so consistency isn’t the reason.

This naming convention avoids acronym capitalization ambiguities and reads more like natural written language. For example, instead of normalizing the inconsistently-capitalized identifier XMLHttpRequest as XMLHTTPRequest, XmlHttpRequest, or xml_http_request, you would use XML_HTTP_Request.