elharo opened a new issue, #521:
URL: https://github.com/apache/maven-ear-plugin/issues/521
## Description
In `EarMojo.java:563-568`, a whitespace-only classifier string is not
properly handled:
```java
if (classifier == null) {
classifier = "";
} else if (classifier.trim().length() > 0 && !classifier.startsWith("-")) {
classifier = "-" + classifier;
}
```
If `classifier` is `" "` (whitespace-only), `trim().length() > 0` is false
(it becomes 0), so none of the branches apply. The classifier remains `" "`
with embedded spaces, and the resulting filename would be something like `myApp
.ear` with spaces.
## Expected behavior
Trim the classifier before processing:
```java
if (classifier != null) {
classifier = classifier.trim();
}
```
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