From: Herman Schultz <phermans@...>
Date: 2009-12-02T01:16:54+09:00
Subject: Rake Environment variables gone missing

I posted this about six months ago but the form seems to have gone
missing.

Unfortunately, I have been sent back to work on the project from hell
and am running into the same issue.

The previous posts didn't produce much help as no one seems to be able
to produce the problem but me.

I am running on windows-xp machine with ruby 1.8.6 (2008-08-11
patchlevel 287) [i386-mswin32] and rake, version 0.8.1.

Here's the issue.  I read in a windows batch file that has a bunch of
environment variable in it that are used in a hornets nest of Devstudio
C++ projects.  I want to parse the variables out and pass them to ENV so
I can invoke incredibuild from rake.

Here's the problem code.

 File.foreach env_batch_file do |line|
   if /^\s*SET\s*([^\s=]+)\s*=\s*(.*)$/i =~ line
      env_count = ENV.size()
      key = $1
      value = resolve_variables($2)

      key.strip!
      value.strip!
      already_has_key = ENV.has_key?(key)

      ENV[key] = value.dup
      env_count = env_count + 1

      if( env_count != ENV.size())
         if ( already_has_key )
              verbose("Variable already set.", 5)
           else
              verbose("ENV Hash whacked." , 1)
         end
      end
   end


In this particular manifestation of the problem it happens when the ENV
size grows to 360.  Here's some output:

360:
In Value = %IIE_SOURCE%\cen_xml_support\build\windows\static\release
Rep = F:\source\iie\trunk
Val = %IIE_SOURCE%\cen_xml_support\build\windows\static\release
Val = F:\source\iie\trunk\cen_xml_support\build\windows\static\release
No quotes.
Return ->
F:\source\iie\trunk\cen_xml_support\build\windows\static\release
360:ENV[CEN_XML_SUPPORT_REL_LIB_LOC] =
F:\source\iie\trunk\cen_xml_support\build\windows\static\release
ENV Hash whacked. 360:361 -> CEN_XML_SUPPORT_REL_LIB_LOC
360

I should note that in the very next attempt the size of ENV goes to 27!
So something is going seriously wrong here.

Any thoughts as to what specifically is failing.
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