Editora 0.9.10. Archived, so links from that release keep working. Read the 0.17.0 page →
Edit: String Manipulation…
edit.stringOps Pick a case conversion or line transform to apply to the selection.
How to run it
Open the command palette (M-x in the Emacs keymap) and search for Edit: String Manipulation…, then press Enter. It also has a default keybinding:
| Emacs | C-cx |