X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/a0d0e21ea6ea90a22318550944fe6cb09ae10cda..b76b0bf9b926e6a5504a59a935a232eb91d44437:/lib/pwd.pl

diff --git a/lib/pwd.pl b/lib/pwd.pl
index 0cc3d4e..bd8123b 100644
--- a/lib/pwd.pl
+++ b/lib/pwd.pl
@@ -1,5 +1,18 @@
+warn "Legacy library @{[(caller(0))[6]]} will be removed from the Perl core distribution in the next major release. Please install it from the CPAN distribution Perl4::CoreLibs. It is being used at @{[(caller)[1]]}, line @{[(caller)[2]]}.\n";
+
 ;# pwd.pl - keeps track of current working directory in PWD environment var
 ;#
+#
+# This library is no longer being maintained, and is included for backward
+# compatibility with Perl 4 programs which may require it.
+# This legacy library is deprecated and will be removed in a future
+# release of perl.
+#
+# In particular, this should not be used as an example of modern Perl
+# programming techniques.
+#
+# Suggested alternative: Cwd
+
 ;# $RCSfile: pwd.pl,v $$Revision: 4.1 $$Date: 92/08/07 18:24:11 $
 ;#
 ;# $Log:	pwd.pl,v $
@@ -16,7 +29,7 @@ sub main'initpwd {
     if ($ENV{'PWD'}) {
 	local($dd,$di) = stat('.');
 	local($pd,$pi) = stat($ENV{'PWD'});
-	if ($di != $pi || $dd != $pd) {
+	if (!defined $dd or !defined $pd or $di != $pi or $dd != $pd) {
 	    chop($ENV{'PWD'} = `pwd`);
 	}
     }
@@ -26,7 +39,7 @@ sub main'initpwd {
     if ($ENV{'PWD'} =~ m|(/[^/]+(/[^/]+/[^/]+))(.*)|) {
 	local($pd,$pi) = stat($2);
 	local($dd,$di) = stat($1);
-	if ($di == $pi && $dd == $pd) {
+	if (defined $pd and defined $dd and $di == $pi and $dd == $pd) {
 	    $ENV{'PWD'}="$2$3";
 	}
     }
@@ -34,6 +47,7 @@ sub main'initpwd {
 
 sub main'chdir {
     local($newdir) = shift;
+    $newdir =~ s|/{2,}|/|g;
     if (chdir $newdir) {
 	if ($newdir =~ m#^/#) {
 	    $ENV{'PWD'} = $newdir;