alt Hacker NewsI guess I might be misunderstanding what Scintilla is? Everything I've seen with it has it coupled with native controls, like a winform control or a Qt control. Are you saying that the library can be used, on its own, without a graphical component? If so, that might fit the bill!
Yes, Scintilla is a text editor engine library. It's not tied to any particular UI or technology. Out of the box it's not a text editor yet; you provide the frontend. You get all the "table stakes" right away if you build your editor on this library.
Here's Scintilla driving a TUI text editor: https://github.com/magiblot/turbo
Here's Scintilla driving a custom GUI control (not the system text control): https://github.com/desjarlais/Scintilla.NET
Same engine, different frontends. The engine has a series of hooks that you implement in whichever way you please for your particular interface. It's definitely the presumptive choice here.