Text view with syntax, undo/redo, and text marks

Current version

gtksourceview@4 requires the following formulae to be installed:
xz 5.2.3 General-purpose data compression with high compression ratio
intltool 0.51.0 String tool
pkg-config 0.29.2 Manage compile and link flags for libraries
gettext GNU internationalization (i18n) and localization (l10n) library
gtk+3 3.22.29 Toolkit for creating graphical user interfaces

Recent formula history

Tom Schoonjans gtksourceview@4 4.0.0 (new formula)

Formula code at GitHub