Show docs as docs, not as sources on Windows too

[DunetsNM]

Normalize slashes in file URLs to correctly show docs on Windows.

Compliments /pull/21

Before:

After:

There's also related bug on HLS end haskell/haskell-language-server/issues/247 (trivial to fix, will submit soon)

Or do you think it's better to normalize slashes in all paths on HLS end? I'm not sure how easy it is to pinpoint all paths' origins there, also other plugins are potentially affected (ghcide, hie).

[lukel97]

Do you think you could fix this upstream in ghcide? That way it would also fix the issue across the other language clients, I think the relative lines are here
https://github.com/digital-asset/ghcide/blob/765967d19be4ca64abc999173029a6bfe6aec113/src/Development/IDE/Spans/Documentation.hs#L69-L70

[DunetsNM]

Sure, just opened a pr there for the third slash, can replace backslashes too

[lukel97]

@DunetsNM thanks! I won't be able to merge that PR into digital-asset/ghcide but we can cherry-pick it onto the HLS submodule at some point. Is haskell/ghcide#721 enough on its own or does this PR also need merged to fix it?

[DunetsNM]

@bubba yes haskell/ghcide/pull/721 should be enough on its own 👍
Just tried v1.0.1 with local ghcide fix and it works fine, so this pr can be abandoned