fix Issue 4020: problem reformatting block comments

[ahl]

Fixes #4020

prior to the fix, the tests fail like this:

Mismatch at tests/source/issue-4020.rs:1:
 // rustfmt-wrap_comments: true
 
-/** foobar */
+/** foobar **/
 const foo1: u32 = 0;
 
 /**

Mismatch at tests/source/issue-4020.rs:7:
- * foobar
- */
+ ** foobar
+ **/
 const foo2: u32 = 0;

[calebcartwright]

I don't think it's mentioned in the Contributing docs, but for awareness, when the test is just ensuring rustfmt doesn't modify the formatting like this one you only need the test file under target and can skip the one under source

[ahl]

Thanks for that! Removed now.

[davepacheco]

Thanks for the fix, @ahl!

It looks like this would fix #4020. Are there any blockers for landing this change?

[calebcartwright]

Are there any blockers for landing this change?

FWIW, no, I believe this is good to go. Just needs an approval from someone with merge perms. It'll likely be a while longer even after merge before this fix is released and available though due to the current release cycle for rustfmt.

[ahl]

@calebcartwright is there anything I can do to nudge it along?

[calebcartwright]

Unfortunately probably not @ahl. There's not a lot of folks on the rustfmt wg, and seems they've been very busy and unavailable recently.

Thank you for the PR though, hopefully it won't be too much longer!

[ahl]

@topecongiro you merged #4079 -- would you mind taking a look at this one? Thanks.

[karyon]

backported in #4253