From: Jarkko Hietaniemi <jhi@iki.fi>
Date: Mon, 6 Nov 2000 23:58:48 +0000 (+0000)
Subject: %ENV note tweaks from Dan Sugalski.
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=6be8f7a639aa6b6c116e29c11f6b58a558cf0865;p=p5sagit%2Fp5-mst-13.2.git

%ENV note tweaks from Dan Sugalski.

p4raw-id: //depot/perl@7583
---

diff --git a/pod/perlport.pod b/pod/perlport.pod
index a06da44..ebb20b2 100644
--- a/pod/perlport.pod
+++ b/pod/perlport.pod
@@ -335,7 +335,7 @@ operating systems put mandatory locks on such files.
 Don't count on a specific environment variable existing in C<%ENV>.
 Don't count on C<%ENV> entries being case-sensitive, or even
 case-preserving.  Don't try to clear %ENV by saying C<%ENV = ();>, or,
-if you really have to, make it conditional on C<$^O ne 'vms'> since in
+if you really have to, make it conditional on C<$^O ne 'VMS'> since in
 VMS the C<%ENV> table is much more than a per-process key-value string
 table.
 
diff --git a/vms/perlvms.pod b/vms/perlvms.pod
index 25058bc..f43cbb0 100644
--- a/vms/perlvms.pod
+++ b/vms/perlvms.pod
@@ -788,11 +788,13 @@ by saying
 (You can't just say C<$ENV{$key} = $ENV{$key}>, since the
 Perl optimizer is smart enough to elide the expression.)
 
-Don't try to clear C<%ENV> by saying C<%ENV = ();> Bad things will
-happen because parts of C<%ENV> are per-process, parts of it are
-per-group, and parts of it are system-wide.  Without some serious
-rights, it won't work, or with the rights, it does, but the system
-will effectively die.
+Don't try to clear C<%ENV> by saying C<%ENV = ();>, it will throw
+a fatal error.  This is equivalent to doing the following from DCL:
+
+    DELETE/LOGICAL *
+
+You can imagine how bad things would be if, for example, the SYS$MANAGER
+or SYS$SYSTEM logicals were deleted.
 
 At present, the first time you iterate over %ENV using
 C<keys>, or C<values>,  you will incur a time penalty as all