java eclipse formatter: Avoid wrapping explicit line breaks as supported in all recent versions of eclipse.

[ctvoigt]

Preserve explicit line breaks for constants (with values) in enums and break them only if necessary.

Corresponding wording from java guide
4.5.1
The prime directive of line-wrapping is: prefer to break at a higher syntactic level.
4.5.1 Where to break; 4. A comma (,) stays attached to the token that precedes it.

Example

raw code
enum Example {CANCELLED, RUNNING, WAITING, FINISHED }enum Example {GREEN(0, 255, 0), RED(255, 0, 0) }

formatted

enum Example {
  CANCELLED, RUNNING, WAITING, FINISHED
}

raw code including explicit line breaks

enum Example {CANCELLED,
 RUNNING, WAITING, FINISHED }enum Example {GREEN(0, 255, 0), RED(255, 0, 0)  }

formatted

enum Example {
  CANCELLED,
  RUNNING, WAITING, FINISHED
}


enum Example {
  GREEN(0, 255, 0), RED(255, 0, 0)
}

Tested on environment

Spring Tool Suite 4
Version: 4.1.2.RELEASE
Build Id: 201902210640
OS: Windows 10, v.10.0, x86_64 / win32
Java version: 1.8.0_121