Announcing my port of Scintilla to GTK 4 
Scintilla (https://scintilla.org/) is a powerful, free, multi-platform text/code editor component (widget). It powers applications like Notepad++ (everyone's favorite win32 text editor) and Geany. With this port, it's also available as a GObject library / GTK 4 widget; you might use it as an alternative to GtkSourceView.
https://groups.google.com/g/scintilla-interest/c/_ZgpYuzZdoU/m/T2RWqAzxAAAJ
