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Bug: error when too long line before ending triple quotes

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#969 1 comment 1 reaction 0 assignees View on GitHub

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
35/100
Issue type
Bug
Clarity
Clearly specified
Activity status
Stale
Tech stack
java
Domain
tooling

Research direction

Start by reproducing the failure with the provided Problem.java example using google-java-format-1.17.0. Trace the formatter behavior for a long text block immediately before the closing triple quotes; done means formatting completes without the AST-change error and produces the expected concatenated string.

Written by the indexing model from the issue text.

Description

I have a very simple example where google-java-format errors:

class Problem {
  static String problematic() {
    return """
A too long string directly before the ending triple quote seems to cause a problem with google java formatter""";
  }
}

When I run the formatter on this file (using java -jar /path/to/google-java-format-1.17.0-all-deps.jar /path/to/Problem.java) I get the following error:

/path/to/Problem.java:error: Something has gone terribly wrong. We planned to make the below formatting change, but have aborted because it would unexpectedly change the AST.
Please file a bug: https://github.com/google/google-java-format/issues/new

=== Actual: ===

class Problem {
    
    static String problematic() {
        return "A too long string directly before the ending triple quote seems to cause a problem\"\n               + \" with google java formatter";
    }
}
=== Expected: ===

class Problem {
    
    static String problematic() {
        return "A too long string directly before the ending triple quote seems to cause a problem with google java formatter";
    }
}

Dominant language
Java
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First steps

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

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