matthiasblaesing opened a new pull request #3491:
URL: https://github.com/apache/netbeans/pull/3491
With an empty file the BufferedCharSequence fails to be initialized:
```
java.lang.IllegalArgumentException: Buffer size <= 0
at
java.base/java.io.BufferedInputStream.<init>(BufferedInputStream.java:207)
at
org.netbeans.modules.search.matcher.BufferedCharSequence$Source.initStreams(BufferedCharSequence.java:562)
Caused: java.io.IOException
Caused:
org.netbeans.modules.search.matcher.BufferedCharSequence$SourceIOException
at
org.netbeans.modules.search.matcher.BufferedCharSequence$Source.initStreams(BufferedCharSequence.java:570)
at
org.netbeans.modules.search.matcher.BufferedCharSequence$Source.<init>(BufferedCharSequence.java:494)
at
org.netbeans.modules.search.matcher.BufferedCharSequence.<init>(BufferedCharSequence.java:145)
[catch] at
org.netbeans.modules.search.matcher.MultiLineStreamMatcher.checkMeasuredInternal(MultiLineStreamMatcher.java:84)
at
org.netbeans.modules.search.matcher.AbstractMatcher.check(AbstractMatcher.java:53)
at
org.netbeans.modules.search.matcher.DefaultMatcher.checkMeasuredInternal(DefaultMatcher.java:93)
at
org.netbeans.modules.search.matcher.AbstractMatcher.check(AbstractMatcher.java:53)
at
org.netbeans.modules.search.BasicComposition.start(BasicComposition.java:78)
at org.netbeans.modules.search.SearchTask.run(SearchTask.java:93)
at
org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1418)
at
org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:45)
at org.openide.util.lookup.Lookups.executeWith(Lookups.java:278)
at
org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)
```
So ensure, that at least a 1 byte buffer is used.
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