java.util.regex.PatternSyntaxException: Unexpected internal error near index 2
x\
  ^
   at java.util.regex.Pattern.error(Pattern.java:1955)
   at java.util.regex.Pattern.compile(Pattern.java:1702)
   at java.util.regex.Pattern.<init>(Pattern.java:1351)
   at java.util.regex.Pattern.compile(Pattern.java:1028)
   at org.eclipse.jgit.ignore.internal.Strings.convertGlob(Strings.java:352)
   at org.eclipse.jgit.ignore.internal.WildCardMatcher.<init>(WildCardMatcher.java:66)
   at org.eclipse.jgit.ignore.internal.PathMatcher.createNameMatcher0(PathMatcher.java:145)
   at org.eclipse.jgit.ignore.internal.PathMatcher.createPathMatcher(PathMatcher.java:127)
   at org.eclipse.jgit.ignore.FastIgnoreRule.<init>(FastIgnoreRule.java:114)
   at org.eclipse.jgit.ignore.IgnoreNode.parse(IgnoreNode.java:114)
   at org.eclipse.jgit.treewalk.WorkingTreeIterator$RootIgnoreNode.loadRulesFromFile(WorkingTreeIterator.java:1218)
   at org.eclipse.jgit.treewalk.WorkingTreeIterator$RootIgnoreNode.load(WorkingTreeIterator.java:1208)
   at org.eclipse.jgit.treewalk.WorkingTreeIterator.getIgnoreNode(WorkingTreeIterator.java:625)
   at org.eclipse.jgit.treewalk.WorkingTreeIterator.isEntryIgnored(WorkingTreeIterator.java:593)
   at org.eclipse.jgit.treewalk.WorkingTreeIterator.isEntryIgnored(WorkingTreeIterator.java:576)
   at org.eclipse.jgit.treewalk.WorkingTreeIterator.isEntryIgnored(WorkingTreeIterator.java:563)
   at org.netbeans.libs.git.jgit.commands.StatusCommand.run(StatusCommand.java:231)
   at org.netbeans.libs.git.jgit.commands.GitCommand$1.run(GitCommand.java:80)
   at org.netbeans.libs.git.jgit.commands.GitCommand$1.run(GitCommand.java:77)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at org.netbeans.libs.git.jgit.commands.GitCommand.execute(GitCommand.java:77)
   at org.netbeans.libs.git.GitClient.getStatus(GitClient.java:705)
   at org.netbeans.modules.git.client.GitClient$25.call(GitClient.java:484)
   at org.netbeans.modules.git.client.GitClient$25.call(GitClient.java:480)
   at org.netbeans.modules.git.client.GitClient$CommandInvoker$1$1.call(GitClient.java:887)
   at org.netbeans.modules.git.client.GitClient$CommandInvoker$1.call(GitClient.java:906)
   at org.netbeans.modules.git.client.GitClient$CommandInvoker.runMethodIntern(GitClient.java:918)
   at org.netbeans.modules.git.client.GitClient$CommandInvoker.runMethod(GitClient.java:851)
   at org.netbeans.modules.git.client.GitClient$CommandInvoker.access$300(GitClient.java:823)
   at org.netbeans.modules.git.client.GitClient.getStatus(GitClient.java:480)
   at org.netbeans.modules.git.client.GitClient.getStatus(GitClient.java:476)
   at org.netbeans.modules.git.FileStatusCache.refreshAllRoots(FileStatusCache.java:232)
   at org.netbeans.modules.git.FileStatusCache.refreshAllRoots(FileStatusCache.java:192)
   at org.netbeans.modules.git.FilesystemInterceptor$RefreshTask.run(FilesystemInterceptor.java:676)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1423)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)