X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FAnyDBM_File.pm;h=d73abab0f9e1c87e0359c907b8fea93d71514aed;hb=8b503b1a8d84e235d4f8455dd10d4d928b5a89e1;hp=e6a15033c3718e410f5b6f213f053691d96c3128;hpb=ca4f5ef1241e5f772b3f0b4cadf4ff5dc4b2228d;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/lib/AnyDBM_File.pm b/lib/AnyDBM_File.pm
index e6a1503..d73abab 100644
--- a/lib/AnyDBM_File.pm
+++ b/lib/AnyDBM_File.pm
@@ -1,11 +1,15 @@
 package AnyDBM_File;
-use vars qw(@ISA);
 
-@ISA = qw(NDBM_File DB_File GDBM_File SDBM_File ODBM_File) unless @ISA;
+use 5.006_001;
+our $VERSION = '1.00';
+our @ISA = qw(NDBM_File DB_File GDBM_File SDBM_File ODBM_File) unless @ISA;
 
 my $mod;
 for $mod (@ISA) {
-    return 1 if eval "require $mod"
+    if (eval "require $mod") {
+	@ISA = ($mod);	# if we leave @ISA alone, warnings abound
+	return 1;
+    }
 }
 
 die "No DBM package was successfully found or installed";
@@ -15,7 +19,7 @@ die "No DBM package was successfully found or installed";
 
 AnyDBM_File - provide framework for multiple DBMs
 
-NDBM_File, ODBM_File, SDBM_File, GDBM_File - various DBM implementations
+NDBM_File, DB_File, GDBM_File, SDBM_File, ODBM_File - various DBM implementations
 
 =head1 SYNOPSIS
 
@@ -30,14 +34,8 @@ L<DB_File>), GDBM, SDBM (which is always there--it comes with Perl), and
 finally ODBM.   This way old programs that used to use NDBM via dbmopen()
 can still do so, but new ones can reorder @ISA:
 
-    @AnyDBM_File::ISA = qw(DB_File GDBM_File NDBM_File);
-
-Note, however, that an explicit use overrides the specified order:
-
-    use GDBM_File;
-    @AnyDBM_File::ISA = qw(DB_File GDBM_File NDBM_File);
-
-will only find GDBM_File.
+    BEGIN { @AnyDBM_File::ISA = qw(DB_File GDBM_File NDBM_File) }
+    use AnyDBM_File;
 
 Having multiple DBM implementations makes it trivial to copy database formats:
 
@@ -90,6 +88,6 @@ By default, but can be redefined.
 
 =head1 SEE ALSO
 
-dbm(3), ndbm(3), DB_File(3)
+dbm(3), ndbm(3), DB_File(3), L<perldbmfilter>
 
 =cut