In the debugger use local $ENV{MANPATH}, instead of a work around.

local on regular hashes was fixed to delete elements it added by commit
1f5346dc23a1f0ea in Dec 2000. The analogous fix for tied hashes was made by
commit c39e6ab0a7545b7a in May 2002. So the work around can go.

diff --git a/lib/perl5db.pl b/lib/perl5db.pl
index 33d361e..0705341 100644 (file)
--- a/lib/perl5db.pl
+++ b/lib/perl5db.pl
@@ -8916,8 +8916,7 @@ sub runman {
     chop $manpath if $manpath;
 
     # harmless if missing, I figure
-    my $oldpath = $ENV{MANPATH};
-    $ENV{MANPATH} = $manpath if $manpath;
+    local $ENV{MANPATH} = $manpath if $manpath;
     my $nopathopt = $^O =~ /dunno what goes here/;
     if (
         CORE::system(
@@ -8951,12 +8950,6 @@ sub runman {
             }
         }
     } ## end if (CORE::system($doccmd...
-    if ( defined $oldpath ) {
-        $ENV{MANPATH} = $manpath;
-    }
-    else {
-        delete $ENV{MANPATH};
-    }
 } ## end sub runman
 
 #use Carp;                          # This did break, left for debugging