Is there a way to tie autocomplete, capitalisation, and so on to file kind?

For Wiki.js, I’d like to use Textastic to replace full-featured Markdown editors for iOS. The main reason is that it is the only editor on iOS that I know of that works directly with Working Copy Git folders. For code editing, auto completion and such features would be a nightmare, but for Markdown, they would be a benefit. Hence the question - does this capability yet exist?