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http://jira.codehaus.org/browse/MNG-2166?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Benjamin Bentmann updated MNG-2166:
-----------------------------------
Attachment: no-goal-help.patch
I still consider the output from Maven quite unhelpful in this case. Please
consider that Maven is just a tool/utility for developers and hence not
everybody out there will spend time to get through the documentation. Some
peoply simply want to "use" Maven, not understand how it works.
The Ant scripts that I am trying to replace in our organization all provided
some help about the current project and the available targets using the echo
task when the default target was executed. This allowed newbies to quickly
figure out how to perform build steps without ever reading the Ant manual.
Surely, once you know Maven's lifecycle you never need such help targets but
especially old Ant geeks need some easy way of migrating into Maven land.
The attached patch should provide the following console output:
{noformat}
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO]
You must specify at least one goal or lifecycle phase to perform build steps.
The following list illustrates some commonly used build commands:
mvn clean
Deletes any build output (e.g. class files or JARs).
mvn test
Runs the unit tests for the project.
mvn install
Copies the project artifacts into your local repository.
mvn deploy
Copies the project artifacts into the remote repository.
mvn site
Creates project documentation (e.g. reports or Javadoc).
Please see
http://maven.apache.org/guides/introduction/introduction-to-the-lifecycle.html
for a complete description of available lifecycle phases.
Use "mvn -?" to show general usage information about Maven's command line.
[INFO] ------------------------------------------------------------------------
[INFO] For more information, run Maven with the -e switch
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1 second
[INFO] Finished at: Mon Oct 22 20:48:42 EDT 2007
[INFO] Final Memory: 1M/4M
[INFO] ------------------------------------------------------------------------
{noformat}
This output is intended to show further comon use-cases than just "install".
Besides, the user is pointed to a concrete URL with helpful information for his
actual need (personally, I consider pointing people at home pages as helpful as
telling to use Google... information should be found, not searched)
> Provide the help listing as default when no arguments are provided
> ------------------------------------------------------------------
>
> Key: MNG-2166
> URL: http://jira.codehaus.org/browse/MNG-2166
> Project: Maven 2
> Issue Type: New Feature
> Components: Command Line
> Affects Versions: 2.0, 2.0.1, 2.0.2
> Environment: Any
> Reporter: Andre Ranvik
> Assignee: Brian Fox
> Priority: Minor
> Fix For: 2.0.8
>
> Attachments: no-goal-help.patch
>
>
> When just writing "mvn" with no arguments on the command line I get a message
> such as this:
> >mvn
> [INFO] Scanning for projects...
> [INFO]
> ----------------------------------------------------------------------------
> [ERROR] BUILD FAILURE
> [INFO]
> ----------------------------------------------------------------------------
> [INFO] You must specify at least one goal. Try 'install'
> [INFO]
> ----------------------------------------------------------------------------
> [INFO] For more information, run Maven with the -e switch
> [INFO]
> ----------------------------------------------------------------------------
> [INFO] Total time: < 1 second
> [INFO] Finished at: Wed Mar 22 09:15:04 CET 2006
> [INFO] Final Memory: 1M/2M
> [INFO]
> ----------------------------------------------------------------------------
> Many new users to maven or any other such tools are used to getting at least
> some basic info of what is expected. How about just displaying the listing
> that shows up when a user writes "mvn -h" as default when no arguments are
> privided? This is also a feature that most other similar products have. I
> also would suggest printing a URL for where they can get basic information
> for how to use maven.
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