foo.properties is not print idempotent due to `key==value`

[Michael Keppler]

What version of OpenRewrite are you using?

I am using

• Maven/Gradle 5.2.1

What is the smallest, simplest way to reproduce the problem?

foo.properties containing

key==value

What is the full stack trace of any errors you encountered?

[WARNING] There were problems parsing foo.properties
[WARNING] java.lang.IllegalStateException: foo.properties is not print idempotent. 
... (skipped diff header output)
-key==value
+key=value
...
  org.openrewrite.Parser.requirePrintEqualsInput(Parser.java:52)

I checked the Javadoc of Properties and an equals sign immediately after the first equals should be considered part of the value. Also when loading "key==value" into Java properties, it returns "=value" when asking for "key".

Are you interested in contributing a fix to OpenRewrite?

Not for this one.

[Tim te Beek]

Oh wow, curious case once again. Thanks for reporting it here!