In a fresh Eclipse installation with Spoofax installed, with a fresh workspace, some languages are not being associated with the Spoofax editor. For example, .nab, .sdf3, .esv and .def files are not being associated with the Spoofax editor, meaning they open in the default text editor. Only Stratego and non-meta language files seem to be associated correctly.

This seems to be caused by wrong associations in Eclipse, found under General -> Editors -> File Associations. Almost all associations follow the pattern LanguageName.Extension, like EditorService.esv, which is wrong. It should be *.esv instead.

Submitted by Gabriël Konat on 27 February 2015 at 13:59

Fixed with https://github.com/metaborg/spoofax/pull/12