I understand Geany is still using Scintilla 3 whereas
the latest version of Scintilla is 5.x. When might Scintilla 5 be used in Geany and would
it then support the CommonMark version of markdown?
the current GIT master version of Geany already uses Scintilla 5 and so
will the next release.
I don't know about the state of support of CommonMark in the Scintilla
Markdown lexer though.