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https://issues.apache.org/jira/browse/TINKERPOP-3225?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18073804#comment-18073804
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ASF GitHub Bot commented on TINKERPOP-3225:
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Cole-Greer commented on PR #3372:
URL: https://github.com/apache/tinkerpop/pull/3372#issuecomment-4254412499
I'm not sure what's going on with the gremlin-console GHA here, but the
tests are all passing for me locally. I'm proceeding with the merge.
> conjoin has incorrect null handling
> -----------------------------------
>
> Key: TINKERPOP-3225
> URL: https://issues.apache.org/jira/browse/TINKERPOP-3225
> Project: TinkerPop
> Issue Type: Bug
> Components: process
> Affects Versions: 3.8.0, 3.7.5
> Reporter: Ken Hu
> Priority: Major
> Labels: breaking
>
> The conjoin() step doesn't behave as stated in the semantics documentation.
> Namely, the "Null values are ignored" isn't being followed.
> {code:java}
> gremlin> g.inject([null]).conjoin("-")
> ==>null
> gremlin> g.inject([null, null]).conjoin("-")
> ==>null {code}
> show that the nulls are being passed through similar to concat() but that
> isn't correct according to the semantics.
> Instead it should be the following:
> {code:java}
> gremlin> g.inject([]).conjoin("+")
> ==>
> gremlin> g.inject([null]).conjoin("+")
> ==>
> gremlin> g.inject([null, null]).conjoin("+")
> ==>{code}
> where similar to empty array, the result is an empty string.
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