No hand waving. Structural regular expressions are starting to get popular just in the last couple of years. They're getting integrated in text editors and othe

No hand waving. Structural regular expressions are starting to get popular just in the last couple of years. They're getting integrated in text editors and other tools. Take a look at this talk for concrete examples from the Vis text editor: https://www.youtube.com/watch?v=y41MyOrPt8Q https://www.youtube.com/watch?v=y41MyOrPt8Q. Also Kakoune text editor defaults to structural regular expressions in the search https://github.com/mawww/kakoune https://github.com/mawww/kakoune.