In addition to JSON, the other lexer we don't use yet is for the Nim language (these are the only ones I'm aware of). I'm not a Nim language user myself but I tried to modify the external filetype config file to the internal one so most of the stuff is preserved and should work correctly. You can view, comment on, or merge this pull request online at:
https://github.com/geany/geany/pull/3648
-- Commit Summary --
* Convert Nim to builtin filetype and use Scintilla Nim lexer for it
-- File Changes --
M data/Makefile.am (2) D data/filedefs/filetypes.Nim.conf (64) A data/filedefs/filetypes.nim (71) M data/filetype_extensions.conf (2) M meson.build (1) M scintilla/Makefile.am (1) A scintilla/lexilla/lexers/LexNim.cxx (814) M scintilla/lexilla/src/Lexilla.cxx (1) M scintilla/scintilla_changes.patch (1) M src/filetypes.c (1) M src/filetypes.h (1) M src/highlighting.c (15) M src/highlightingmappings.h (29)
-- Patch Links --
https://github.com/geany/geany/pull/3648.patch https://github.com/geany/geany/pull/3648.diff