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From "Tim Reilly (JIRA)" <>
Subject [jira] Created: (MNG-2991) M2_HOME is incorrect when launched from another process
Date Thu, 17 May 2007 17:17:59 GMT
M2_HOME is incorrect when launched from another process

                 Key: MNG-2991
             Project: Maven 2
          Issue Type: Improvement
          Components: Command Line
    Affects Versions: 2.0.6
         Environment: WinXP
            Reporter: Tim Reilly
            Priority: Minor

This is just an idea to solve the following:  I believe echo'ing ~dp0 when launching maven.bat
from ant exec produces the ant.bat processes ~0; not the maven bat  files ~0 -since createProc
API is used the processes command is the first argument.

I think you may get around this by putting a new "finder file" .bat along side mvn.bat . Since
mvn.bat and find_m2.bat are both on the path I can "discover" where M2_HOME is from the %PATH%.

Within mvn.bat
if  "%m2_home%" == ""(
   if "%OS%"=="Windows_NT" (call find_m2.bat)
Within find_m2.bat:
@echo off
set  _WHERE_IS_M2=%~dp0
set M2_LOCAL_HOME=%__WHERE_IS_M2:\bin=%
endlocal & set M2_HOME=%M2_LOCAL_HOME%

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