Roo does not roll back file system commits when an exception occurs

An exception ocurring in inflector is not picked up by Roo to roll back file system changes:

roo> new persistent class jpa -name Tooth
Created SRC_MAIN_JAVA\com\foo
Created SRC_MAIN_JAVA\com\foo\Tooth.java
String index out of range: -1
java.lang.StringIndexOutOfBoundsException: String index out of range: -1
at java.lang.String.substring(Unknown Source)
at org.jvnet.inflector.rule.SuffixInflectionRule.apply(SuffixInflectionRule.java:57)
at org.jvnet.inflector.RuleBasedPluralizer.pluralizeInternal(RuleBasedPluralizer.java:169)
at org.jvnet.inflector.RuleBasedPluralizer.pluralize(RuleBasedPluralizer.java:147)
at org.jvnet.inflector.RuleBasedPluralizer.pluralize(RuleBasedPluralizer.java:121)
at org.jvnet.inflector.Noun.pluralOf(Noun.java:121)
at org.jvnet.inflector.Noun.pluralOf(Noun.java:89)
at org.springframework.roo.addon.plural.PluralMetadata.<init>(PluralMetadata.java:57)
at org.springframework.roo.addon.plural.PluralMetadataProvider.getMetadata(PluralMetadataProvider.java:30)
at org.springframework.roo.classpath.itd.AbstractItdMetadataProvider.get(AbstractItdMetadataProvider.java:222)
at org.springframework.roo.metadata.internal.DefaultMetadataService.get(DefaultMetadataService.java:106)
at org.springframework.roo.metadata.internal.DefaultMetadataService.get(DefaultMetadataService.java:124)
at org.springframework.roo.addon.entity.EntityMetadataProvider.getMetadata(EntityMetadataProvider.java:63)
at org.springframework.roo.classpath.itd.AbstractItdMetadataProvider.get(AbstractItdMetadataProvider.java:222)
at org.springframework.roo.metadata.internal.DefaultMetadataService.get(DefaultMetadataService.java:106)
at org.springframework.roo.metadata.internal.DefaultMetadataService.get(DefaultMetadataService.java:124)
at org.springframework.roo.addon.beaninfo.BeanInfoMetadataProvider.getMetadata(BeanInfoMetadataProvider.java:77)
at org.springframework.roo.classpath.itd.AbstractItdMetadataProvider.get(AbstractItdMetadataProvider.java:222)
at org.springframework.roo.metadata.internal.DefaultMetadataService.get(DefaultMetadataService.java:106)
at org.springframework.roo.metadata.internal.DefaultMetadataService.get(DefaultMetadataService.java:124)
at org.springframework.roo.addon.tostring.ToStringMetadataProvider.getMetadata(ToStringMetadataProvider.java:42)
at org.springframework.roo.classpath.itd.AbstractItdMetadataProvider.get(AbstractItdMetadataProvider.java:222)
at org.springframework.roo.classpath.itd.AbstractItdMetadataProvider.notify(AbstractItdMetadataProvider.java:100)
at org.springframework.roo.metadata.internal.DefaultMetadataService.notify(DefaultMetadataService.java:148)
at org.springframework.roo.metadata.internal.DefaultMetadataDependencyRegistry.notifyDownstream(DefaultMetadataDependencyRegistry.java:224)
at org.springframework.roo.classpath.javaparser.JavaParserMetadataProvider.onFileEvent(JavaParserMetadataProvider.java:131)
at org.springframework.roo.file.monitor.polling.PollingFileMonitorService.publish(PollingFileMonitorService.java:184)
at org.springframework.roo.file.monitor.polling.PollingFileMonitorService.scanAll(PollingFileMonitorService.java:165)
at org.springframework.roo.process.manager.internal.DefaultProcessManager.doTransactionally(DefaultProcessManager.java:122)
at org.springframework.roo.process.manager.internal.DefaultProcessManager.backgroundPoll(DefaultProcessManager.java:77)
at org.springframework.roo.process.manager.internal.DefaultProcessManager.run(DefaultProcessManager.java:155)
at org.springframework.scheduling.timer.DelegatingTimerTask.run(DelegatingTimerTask.java:67)
at java.util.TimerThread.mainLoop(Unknown Source)
at java.util.TimerThread.run(Unknown Source)