New perldelta for 5.27.6

[perl5.git] / pod / perlvms.pod

diff --git a/pod/perlvms.pod b/pod/perlvms.pod
index a6045be..e0d9803 100644 (file)
--- a/pod/perlvms.pod
+++ b/pod/perlvms.pod
@@ -326,8 +326,10 @@ improve performance at the expense of the BYTLM UAF quota.
 
 =head1 PERL5LIB and PERLLIB
 
-The PERL5LIB and PERLLIB logical names work as documented in L<perl>,
-except that the element separator is '|' instead of ':'.  The
+The PERL5LIB and PERLLIB environment elements work as documented in L<perl>,
+except that the element separator is, by default, '|' instead of ':'.
+However, when running under a Unix shell as determined by the logical
+name C<GNV$UNIX_SHELL>, the separator will be ':' as on Unix systems. The
 directory specifications may use either VMS or Unix syntax.
 
 =head1 The Perl Forked Debugger
@@ -936,9 +938,11 @@ the CRTL C<environ> array.  This default order is reversed when the
 logical name F<GNV$UNIX_SHELL> is defined, such as when running under
 GNV bash.
 
-In all operations on %ENV, the key string is treated as if it 
-were entirely uppercase, regardless of the case actually 
-specified in the Perl expression.
+For operations on %ENV entries based on logical names or DCL symbols, the
+key string is treated as if it were entirely uppercase, regardless of the
+case actually specified in the Perl expression. Entries in %ENV based on the
+CRTL's environ array preserve the case of the key string when stored, and
+lookups are case sensitive.
 
 When an element of C<%ENV> is read, the locations to which
 F<PERL_ENV_TABLES> points are checked in order, and the value