Some file extensions were still not supported by my QuickLook. If I must edit configuration files I don’t need a preview, I open them directly in my text editor. So maybe that’s the reason why I still didn’t add their support. Anyway today I only wanted to have a quick look into some configuration files, thus I followed the steps of this tutorial by moondark. In my case I added the following UTExportedTypeDeclarations section to TextWrangler’s Info.plist.
UTExportedTypeDeclarations UTTypeConformsTo public.text public.plain-text UTTypeDescription Plain text file UTTypeIdentifier com.barebones.textwrangler UTTypeTagSpecification com.apple.ostype TEXT public.filename-extension conf ini bak types