Allow custom highlight mapping beyond file extensions (#15808)
Allow custom highlight mapping beyond file extensions (#15808)

Co-authored-by: Lauris BH <f3041c4c693c07149804ea655e75ee8bb856bd26@nix.lv>
go-gitea/gitea,go-gitea/gitea,go-gitea/gitea,vdbt/gitea,vdbt/gitea