[llvm-bugs] [Bug 38720] New: [Formatter/ObjC] Avoid breaks after @protocol, return, etc. to fit the rest of the expression into a second line

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=38720

            Bug ID: 38720
           Summary: [Formatter/ObjC] Avoid breaks after @protocol, return,
                    etc. to fit the rest of the expression into a second
                    line
           Product: clang
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Formatter
          Assignee: unassignedclangbugs at nondot.org
          Reporter: jolesiak at google.com
                CC: djasper at google.com, klimek at google.com,
                    llvm-bugs at lists.llvm.org

Current formatting:
@protocol
    aaaaaaaaaaaaaaaaaaaaaaaa <aaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaa>

Should be formatted:
@protocol aaaaaaaaaaaaaaaaaaaaaaaa <aaaaaaaaaaaaaaaaaaaaaaa, 
                                    aaaaaaaaaaaaaaaaaaaaaaa>

The same way it is formatted now if there is not enough space to break after
"@protocol" and fit the rest of the expression into second line:
@protocol aaaaaaaaaaaaaaaaaaaaaaaaAA <aaaaaaaaaaaaaaaaaaaaaaa,
                                      aaaaaaaaaaaaaaaaaaaaaaa>

This should also work consistently with patterns like:
return [aaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaa:aaaaaaaaaaa
                                 aaaaaaaaaaaa:aaaaaaaaaa];

return @[
    aaaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaa
];

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