elharo opened a new issue, #522:
URL: https://github.com/apache/maven-ear-plugin/issues/522
## Description
In `EarMojo.java:460`, a trailing comma in the `unpackTypes` parameter
produces an empty string element:
```java
unpackTypesList = Arrays.asList(unpackTypes.split(","));
```
If the user configures `unpackTypes = "jar,war,"`, `split(",")` produces the
array `["jar", "war", ""]`. The empty string `""` will fail
`isStandardArtifactType()` and produce a confusing error message.
## Expected behavior
Filter out empty strings:
```java
unpackTypesList = Arrays.stream(unpackTypes.split(","))
.filter(s -> !s.isEmpty())
.collect(Collectors.toList());
```
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