Rustdoc hyperlinks should open in a new tab

[tivervac]

I was reading the docs and noticed that all of the links open in the current tab. As MarkDown is used, new tabs aren't natively available but MarkDown does support raw html.
i.e. instead of writing (in guide.md)
<a href="https://github.com/rust-lang/rust#building-from-source">building Rust from Source</a>
We could write
<a href="https://github.com/rust-lang/rust#building-from-source" target="_blank">building Rust from Source</a>
This will open links in new tabs and won't take us away from the guide (or whatever documentation) we were reading.

[huonw]

I intensely dislike websites that force opening a new tab; the user has a variety of options for opening an arbitrary link in a new tab (middle click, using the menu etc.) and taking away the ability to open a link in the current tab is immensely annoying.

[MatejLach]

I agree with @huonw.
By making the links open in a new tab by default, we're imposing a superficial preference on the user that should be his/her to make.

[frewsxcv]

I'd also vote against this. Opening hyperlinks in a new tab is trivial with most browsers. I think it'd be more interesting to follow Wikipedia's rules on hyperlinks: all links (internal and external) open in the current tab, but external links get marked with a little icon next to the text

[tivervac]

Even though I think in-tab-opening is quite annoying as you lose your progress and might have to spam that previousbutton to get back to where you were, @huonw and @MatejLach both make a valid standpoint. I agree that it is indeed easier to manually open a link in a new tab than manually opening a link in the current page. As I don't know how far this has been discussed before, you can close this issue if you deem further discussion unnecessary. @frewsxcv's suggestion seems to fit both of our needs so I'd vote for this suggestion

[steveklabnik]

I am borderline morally (lol) against doing this. Forcing users to open in a new tab isn't cool.=

[tivervac]

As this was apparently not such a good idea, I will be closing the issue. Thanks for all the insights you all provided though :)

[qq253498229]

I support this issue because it will give developers a new choice, and there is no rule that developers must use it.