I know that empty variables can only be set with some third-party tools or plugins that call SetEnvironmentVariable function but sometimes it is really handy to have them when you want to e.g. start 64-bit programs under 64-bit Windows and 32-bit under 32-bit one.
E.g. one can use Autorun content plugin for auto-setting such variables depending on Windows bitness:
Code: Select all
LoadLibrary Plugins\Autorun_Sysinfo.dll
If %SYSINFO_OSARCH% = 32 Then
SetEnv OS_EMPTY_OR_64
SetEnv OS_EMPTY_OR_64_SLASH
Else
SetEnv OS_EMPTY_OR_64 64
SetEnv OS_EMPTY_OR_SLASH_64 \64
EndIf
If %AUTORUN_TCARCH% = 32 Then
SetEnv TC_EMPTY_OR_64
SetEnv TC_EMPTY_OR_64_SLASH
Else
SetEnv TC_EMPTY_OR_64 64
SetEnv TC_EMPTY_OR_SLASH_64 \64
EndIf
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Command=%COMMANDER_PATH%\Tools\Program\Program%OS_EMPTY_OR_64%.exe
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Command=%COMMANDER_PATH%%TC_EMPTY_OR_SLASH_64%\Program.exe
Code: Select all
Program%OS_EMPTY_OR_64%.exe