Allow formatting pre-diffed content

[wilg]

Proof-of-concept.

No tests currently, waiting to see if this is something that would be welcomed.

[samg]

Could you provide a bit more info on what you're looking to accomplish with this change? Why not just display the content and bypass diffy entirely? Thanks!

[wilg]

@samg For sure – I have the text of a git diff already, but I'd like to format it as HTML. I'd prefer to use the existing diff-text-to-html transformation you've already got without rolling my own.

[samg]

Ah, makes sense.

You may be able to accomplish this more easily by just using the html formatter class directly.

e.g.

Diffy::HtmlFormatter.new(`git diff`.split("\n")).to_s

It expects an enumerable object containing lines of text (e.g. an array or strings). Splitting your diff on newlines as shown above will likely get you the result you want.

Let me know if that works for you. If it does I may try to document that this is possible in the README so others with the same issue can figure it out without having to analyze the source code.