Re: Case insensitive keys in global %ENV

%ENV is already uppercase only,

C:\>perl -le"$ENV{lowerlowerlower}=1;print for keys %ENV"
USERPROFILE
HOMEDRIVE
CLIENTNAME
COMMONPROGRAMFILES
APPDATA
PROGRAMFILES
OS
PATHEXT
PROMPT
NUMBER_OF_PROCESSORS
HOMEPATH
PATH
USERDOMAIN
PROCESSOR_ARCHITECTURE
TEMP
SYSTEMDRIVE
COMSPEC
WINDIR
PROCESSOR_LEVEL
USERNAME
LOWERLOWERLOWER
PROCESSOR_IDENTIFIER
ALLUSERSPROFILE
COMPUTERNAME

C:\>
[download]

Don't count on a specific environment variable existing in %ENV. Don't count on %ENV entries being case-sensitive, or even case-preserving. Don't try to clear %ENV by saying "%ENV = ();", or, if you really have to, make it conditional on "$^O ne 'VMS'" since in VMS the %ENV table is much more than a per-process key-value string table.

Comment on Re: Case insensitive keys in global %ENV Download Code

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Re^2: Case insensitive keys in global %ENV by bruceb3 (Pilgrim) on Aug 15, 2007 at 08:59 UTC
Maybe on windows but not a UNIX. `bruce:0:~/tmp $ export fred=1 bruce:0:~/tmp $ env \| grep fred fred=1 bruce:0:~/tmp $ perl -e 'print $ENV{fred},"\n"' 1 bruce:0:~/tmp $ perl -e 'print $ENV{FRED},"\n"' bruce:0:~/tmp $` [download]	[reply] [d/l]