errael opened a new issue, #4743:
URL: https://github.com/apache/netbeans/issues/4743
### Apache NetBeans version
Apache NetBeans 15
### What happened
_I think it's non-identifier characters in the file name, could be wrong_
Added a file `<userdir>/config/rules/JOptionPane-2.hint`. Tried to edit it
from inspect dialog, exceptions
```
java.lang.NullPointerException
at
org.netbeans.modules.java.hints.spiimpl.options.HintsPanel.editScriptButtonActionPerformed(HintsPanel.java:760)
at
org.netbeans.modules.java.hints.spiimpl.options.HintsPanel.access$1100(HintsPanel.java:108)
at
org.netbeans.modules.java.hints.spiimpl.options.HintsPanel$11.actionPerformed(HintsPanel.java:593)
at
java.desktop/javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1967)
```
and
```
java.lang.NullPointerException
at
org.netbeans.modules.java.hints.spiimpl.options.HintsPanel.openInEditorActionPerformed(HintsPanel.java:836)
at
org.netbeans.modules.java.hints.spiimpl.options.HintsPanel.access$800(HintsPanel.java:108)
at
org.netbeans.modules.java.hints.spiimpl.options.HintsPanel$8.actionPerformed(HintsPanel.java:502)
at
java.desktop/javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1967)
```
I foolishly thought there was a problem with the contents of the file,
chasing my tail. I finally became suspect of the name, changing the name to
JOptionPane_2.hint fixed the problem.
### How to reproduce
_No response_
### Did this work correctly in an earlier version?
No / Don't know
### Operating System
Linux harmony 5.19.0-76051900-generic #202207312230~1660780566~22.04~9d60db1
### JDK
openjdk version "11.0.2" 2019-01-15
### Apache NetBeans packaging
Own source build
### Anything else
_No response_
### Are you willing to submit a pull request?
No
### Code of Conduct
Yes
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