How to stop the 'gem' utility from accessing my home directory?

Question

When I run

gem install 

command the gem utility tries to access my home directory. It contains some non-latin char

Answer 1

Just change HOMEDRIVE and HOMEPATH before running gem, and restore after (if needed).

I've changed my gem.bat like this:

@ECHO OFF
SET _HOMEDRIVE=%HOMEDRIVE%
SET _HOMEPATH=%HOMEPATH%
SET HOMEDRIVE=E:
SET HOMEPATH=/Dev/Ruby
IF NOT "%~f0" == "~f0" GOTO :WinNT
@"ruby.exe" "E:/Dev/Ruby/bin/gem" %1 %2 %3 %4 %5 %6 %7 %8 %9
GOTO :EOF
:WinNT
@"ruby.exe" "%~dpn0" %*
SET HOMEDRIVE=%_HOMEDRIVE%
SET HOMEPATH=%_HOMEPATH%

E:/Dev/Ruby/ is my Ruby path. It seems that HOMEPATH can be changed to anything else with ASCII only characters in path.