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From "Fabien (JIRA)" <j...@codehaus.org>
Subject [jira] Created: (SCM-603) Blame command for Mercurial (HG) is partial
Date Wed, 02 Feb 2011 12:58:22 GMT
Blame command for Mercurial (HG) is partial
-------------------------------------------

                 Key: SCM-603
                 URL: http://jira.codehaus.org/browse/SCM-603
             Project: Maven SCM
          Issue Type: Bug
          Components: maven-scm-provider-mercurial (hg)
    Affects Versions: 1.4, 1.3
            Reporter: Fabien
         Attachments: HG_blame_command.patch


I use blame command for Mercurial provider (HG) and there is this exception :

{code}
Caused by: org.codehaus.plexus.util.cli.CommandLineException: Error inside systemOut parser
	at org.codehaus.plexus.util.cli.CommandLineUtils.executeCommandLine(CommandLineUtils.java:222)
	at org.codehaus.plexus.util.cli.CommandLineUtils.executeCommandLine(CommandLineUtils.java:107)
	at org.apache.maven.scm.provider.hg.HgUtils.executeCmd(HgUtils.java:159)
	... 13 more
Caused by: java.lang.StringIndexOutOfBoundsException: String index out of range: -1
	at java.lang.String.substring(String.java:1768)
	at org.apache.maven.scm.provider.hg.command.blame.HgBlameConsumer.doConsume(HgBlameConsumer.java:49)
	at org.apache.maven.scm.provider.hg.command.HgConsumer.consumeLine(HgConsumer.java:131)
	at org.codehaus.plexus.util.cli.StreamPumper.consumeLine(StreamPumper.java:197)
	at org.codehaus.plexus.util.cli.StreamPumper.run(StreamPumper.java:137)
{code}

This exception seems to launch when a line is empty in source file.

On version 1.3, blame is partial and no exception is launched.

I propose a patch to fix this problem.

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