add documentation from doc(include) to analysis data

[QuietMisdreavus]

cc #44732

Currently save-analysis only loads docs from plain doc comments and doc attributes. Since #[doc(include="filename.md")] doesn't create a plain doc attribute when it loads the file, we need to be sure to pick up this info for the analysis data.

[rust-highfive]

r? @estebank

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[estebank]

Should this have some kind of test? I don't know how to test it though. r=me once ci finishes.

[QuietMisdreavus]

Before pushing, i had a quick look through the tests in src/test and didn't see any that invoked save-analysis, so i'm not sure what the best way to test it would be. I don't know whether/how the rest of save-analysis is tested, otherwise i would try to slot it into there.

[estebank]

I figured that might be the case :-/

@nrc are you aware of any testing for save-analysis?

[nrc]

There are a couple of smoke tests in run-make/save-analysis or something similar which basically only test that the compiler doesn't crash. However, it is useful to add things like this to one of those tests.

[shepmaster]

Ping from triage @QuietMisdreavus ! We haven't heard from you in a week; will you be able to address the recent comments soon?

[QuietMisdreavus]

Whoops, forgot about this one. I guess the way forward would be to just add something with #[doc(include="file.md")] into the save-analysis test to make sure it doesn't crash? If that's all, then i can get that up shortly. (Assuming i can wrangle my system into running the test. >_>)

[pietroalbini]

@estebank ping from triage!

[estebank]

@bors r+ rollup

[bors]

📌 Commit 5a350c1 has been approved by estebank