You might enjoy the experimental editor Lapis. This Pantograph somewhat reminds me of that lightweight structure editor, though Lapis is able to find regularit

You might enjoy the experimental editor Lapis. This Pantograph somewhat reminds me of that lightweight structure editor, though Lapis is able to find regularities on the fly without a need to follow a perfect tree structure, just by finding bottom-up syntax of language elements (mostly HTML and basic data types). https://en.wikipedia.org/wiki/Lapis_(text_editor) https://en.wikipedia.org/wiki/Lapis_(text_editor) (Look at the links for an archived download page)