Emacs: glasses-mode

Let’s say I have this code (TypeScript) with long camelCased variable names.

I’m ok with camelCase variables especially if this is a convention for a language. But at the same time I find it a bit difficult to read compared to underscore_case style.

Meet M-x glasses-mode.

A beautiful minor mode that is there, built-in, since Emacs 21. Look what it does

The mode doesn’t change text in the buffer. It just makes it look like camelCase variable names became underscore_case. It is possible to keep editing the buffer and variable names will adjust on the fly. You can use your M-x rg or M-x grep and they will search for the text under cursor in camelCase because, again, text in the buffer isn’t changed.

Amazing.