BBEdit 12.5 requires Mac OS X 10.12.6 or later, and is compatible with macOS 10.14 "Mojave".

If you are using macOS 10.13 "High Sierra", please make sure that you have updated to the latest available OS version (10.13.6 or later).

If you are using macOS 10.14 "Mojave", please make sure that you have updated to the latest available OS version (10.14.1 or later).

There are a number of new additions

• There is a new command on the "Go" menu: "Commands...". This brings up a modal panel which lists everything that you can do from a menu in BBEdit: menu commands, clippings, scripts, stationery, text filters, as well as open text documents and recent file.
• You can now generate lipsum, using the "Lorem Ipsum" command on the Insert submenu of the Edit menu.
• Added support for Grep patterns to Canonize. This can be turned on using the check box in the "Canonize" dialog box; or by using a mode line in a Canonize data file.
• Multi-File Search results windows now get a "reload" button, which you can use to repeat the search using the same settings.

Full details are in the release notes.