Update DSNParser in all tools.

bin/pt-archiver

@@ -1454,6 +1454,8 @@ use Data::Dumper;
 $Data::Dumper::Indent    = 0;
 $Data::Dumper::Quotekeys = 0;
 
+my $dsn_sep = qr/(?<!\\),/;
+
 eval {
    require DBI;
 };
@@ -1508,7 +1510,8 @@ sub parse {
    my %final_props;
    my $opts = $self->{opts};
 
-   foreach my $dsn_part ( split(/,/, $dsn) ) {
+   foreach my $dsn_part ( split($dsn_sep, $dsn) ) {
+      $dsn_part =~ s/\\,/,/g;
       if ( my ($prop_key, $prop_val) = $dsn_part =~  m/^(.)=(.*)$/ ) {
          $given_props{$prop_key} = $prop_val;
       }
@@ -1567,12 +1570,14 @@ sub parse_options {
 sub as_string {
    my ( $self, $dsn, $props ) = @_;
    return $dsn unless ref $dsn;
-   my %allowed = $props ? map { $_=>1 } @$props : ();
+   my @keys = $props ? @$props : sort keys %$dsn;
    return join(',',
-      map  { "$_=" . ($_ eq 'p' ? '...' : $dsn->{$_})  }
-      grep { defined $dsn->{$_} && $self->{opts}->{$_} }
-      grep { !$props || $allowed{$_}                   }
-      sort keys %$dsn );
+      map  { "$_=" . ($_ eq 'p' ? '...' : $dsn->{$_}) }
+      grep {
+         exists $self->{opts}->{$_}
+         && exists $dsn->{$_}
+         && defined $dsn->{$_}
+      } @keys);
 }
 
 sub usage {

bin/pt-config-diff

@@ -1053,6 +1053,8 @@ use Data::Dumper;
 $Data::Dumper::Indent    = 0;
 $Data::Dumper::Quotekeys = 0;
 
+my $dsn_sep = qr/(?<!\\),/;
+
 eval {
    require DBI;
 };
@@ -1107,7 +1109,8 @@ sub parse {
    my %final_props;
    my $opts = $self->{opts};
 
-   foreach my $dsn_part ( split(/,/, $dsn) ) {
+   foreach my $dsn_part ( split($dsn_sep, $dsn) ) {
+      $dsn_part =~ s/\\,/,/g;
       if ( my ($prop_key, $prop_val) = $dsn_part =~  m/^(.)=(.*)$/ ) {
          $given_props{$prop_key} = $prop_val;
       }

bin/pt-deadlock-logger

@@ -1213,6 +1213,8 @@ use Data::Dumper;
 $Data::Dumper::Indent    = 0;
 $Data::Dumper::Quotekeys = 0;
 
+my $dsn_sep = qr/(?<!\\),/;
+
 eval {
    require DBI;
 };
@@ -1267,7 +1269,8 @@ sub parse {
    my %final_props;
    my $opts = $self->{opts};
 
-   foreach my $dsn_part ( split(/,/, $dsn) ) {
+   foreach my $dsn_part ( split($dsn_sep, $dsn) ) {
+      $dsn_part =~ s/\\,/,/g;
       if ( my ($prop_key, $prop_val) = $dsn_part =~  m/^(.)=(.*)$/ ) {
          $given_props{$prop_key} = $prop_val;
       }
@@ -1326,12 +1329,14 @@ sub parse_options {
 sub as_string {
    my ( $self, $dsn, $props ) = @_;
    return $dsn unless ref $dsn;
-   my %allowed = $props ? map { $_=>1 } @$props : ();
+   my @keys = $props ? @$props : sort keys %$dsn;
    return join(',',
-      map  { "$_=" . ($_ eq 'p' ? '...' : $dsn->{$_})  }
-      grep { defined $dsn->{$_} && $self->{opts}->{$_} }
-      grep { !$props || $allowed{$_}                   }
-      sort keys %$dsn );
+      map  { "$_=" . ($_ eq 'p' ? '...' : $dsn->{$_}) }
+      grep {
+         exists $self->{opts}->{$_}
+         && exists $dsn->{$_}
+         && defined $dsn->{$_}
+      } @keys);
 }
 
 sub usage {

bin/pt-duplicate-key-checker

@@ -923,6 +923,8 @@ use Data::Dumper;
 $Data::Dumper::Indent    = 0;
 $Data::Dumper::Quotekeys = 0;
 
+my $dsn_sep = qr/(?<!\\),/;
+
 eval {
    require DBI;
 };
@@ -977,7 +979,8 @@ sub parse {
    my %final_props;
    my $opts = $self->{opts};
 
-   foreach my $dsn_part ( split(/,/, $dsn) ) {
+   foreach my $dsn_part ( split($dsn_sep, $dsn) ) {
+      $dsn_part =~ s/\\,/,/g;
       if ( my ($prop_key, $prop_val) = $dsn_part =~  m/^(.)=(.*)$/ ) {
          $given_props{$prop_key} = $prop_val;
       }
@@ -1036,12 +1039,14 @@ sub parse_options {
 sub as_string {
    my ( $self, $dsn, $props ) = @_;
    return $dsn unless ref $dsn;
-   my %allowed = $props ? map { $_=>1 } @$props : ();
+   my @keys = $props ? @$props : sort keys %$dsn;
    return join(',',
-      map  { "$_=" . ($_ eq 'p' ? '...' : $dsn->{$_})  }
-      grep { defined $dsn->{$_} && $self->{opts}->{$_} }
-      grep { !$props || $allowed{$_}                   }
-      sort keys %$dsn );
+      map  { "$_=" . ($_ eq 'p' ? '...' : $dsn->{$_}) }
+      grep {
+         exists $self->{opts}->{$_}
+         && exists $dsn->{$_}
+         && defined $dsn->{$_}
+      } @keys);
 }
 
 sub usage {

bin/pt-find

@@ -28,6 +28,8 @@ use Data::Dumper;
 $Data::Dumper::Indent    = 0;
 $Data::Dumper::Quotekeys = 0;
 
+my $dsn_sep = qr/(?<!\\),/;
+
 eval {
    require DBI;
 };
@@ -82,7 +84,8 @@ sub parse {
    my %final_props;
    my $opts = $self->{opts};
 
-   foreach my $dsn_part ( split(/,/, $dsn) ) {
+   foreach my $dsn_part ( split($dsn_sep, $dsn) ) {
+      $dsn_part =~ s/\\,/,/g;
       if ( my ($prop_key, $prop_val) = $dsn_part =~  m/^(.)=(.*)$/ ) {
          $given_props{$prop_key} = $prop_val;
       }
@@ -141,12 +144,14 @@ sub parse_options {
 sub as_string {
    my ( $self, $dsn, $props ) = @_;
    return $dsn unless ref $dsn;
-   my %allowed = $props ? map { $_=>1 } @$props : ();
+   my @keys = $props ? @$props : sort keys %$dsn;
    return join(',',
-      map  { "$_=" . ($_ eq 'p' ? '...' : $dsn->{$_})  }
-      grep { defined $dsn->{$_} && $self->{opts}->{$_} }
-      grep { !$props || $allowed{$_}                   }
-      sort keys %$dsn );
+      map  { "$_=" . ($_ eq 'p' ? '...' : $dsn->{$_}) }
+      grep {
+         exists $self->{opts}->{$_}
+         && exists $dsn->{$_}
+         && defined $dsn->{$_}
+      } @keys);
 }
 
 sub usage {

bin/pt-fk-error-logger

@@ -1130,6 +1130,8 @@ use Data::Dumper;
 $Data::Dumper::Indent    = 0;
 $Data::Dumper::Quotekeys = 0;
 
+my $dsn_sep = qr/(?<!\\),/;
+
 eval {
    require DBI;
 };
@@ -1184,7 +1186,8 @@ sub parse {
    my %final_props;
    my $opts = $self->{opts};
 
-   foreach my $dsn_part ( split(/,/, $dsn) ) {
+   foreach my $dsn_part ( split($dsn_sep, $dsn) ) {
+      $dsn_part =~ s/\\,/,/g;
       if ( my ($prop_key, $prop_val) = $dsn_part =~  m/^(.)=(.*)$/ ) {
          $given_props{$prop_key} = $prop_val;
       }
@@ -1243,12 +1246,14 @@ sub parse_options {
 sub as_string {
    my ( $self, $dsn, $props ) = @_;
    return $dsn unless ref $dsn;
-   my %allowed = $props ? map { $_=>1 } @$props : ();
+   my @keys = $props ? @$props : sort keys %$dsn;
    return join(',',
-      map  { "$_=" . ($_ eq 'p' ? '...' : $dsn->{$_})  }
-      grep { defined $dsn->{$_} && $self->{opts}->{$_} }
-      grep { !$props || $allowed{$_}                   }
-      sort keys %$dsn );
+      map  { "$_=" . ($_ eq 'p' ? '...' : $dsn->{$_}) }
+      grep {
+         exists $self->{opts}->{$_}
+         && exists $dsn->{$_}
+         && defined $dsn->{$_}
+      } @keys);
 }
 
 sub usage {

bin/pt-heartbeat

@@ -1761,6 +1761,8 @@ use Data::Dumper;
 $Data::Dumper::Indent    = 0;
 $Data::Dumper::Quotekeys = 0;
 
+my $dsn_sep = qr/(?<!\\),/;
+
 eval {
    require DBI;
 };
@@ -1815,7 +1817,8 @@ sub parse {
    my %final_props;
    my $opts = $self->{opts};
 
-   foreach my $dsn_part ( split(/,/, $dsn) ) {
+   foreach my $dsn_part ( split($dsn_sep, $dsn) ) {
+      $dsn_part =~ s/\\,/,/g;
       if ( my ($prop_key, $prop_val) = $dsn_part =~  m/^(.)=(.*)$/ ) {
          $given_props{$prop_key} = $prop_val;
       }
@@ -1874,12 +1877,14 @@ sub parse_options {
 sub as_string {
    my ( $self, $dsn, $props ) = @_;
    return $dsn unless ref $dsn;
-   my %allowed = $props ? map { $_=>1 } @$props : ();
+   my @keys = $props ? @$props : sort keys %$dsn;
    return join(',',
-      map  { "$_=" . ($_ eq 'p' ? '...' : $dsn->{$_})  }
-      grep { defined $dsn->{$_} && $self->{opts}->{$_} }
-      grep { !$props || $allowed{$_}                   }
-      sort keys %$dsn );
+      map  { "$_=" . ($_ eq 'p' ? '...' : $dsn->{$_}) }
+      grep {
+         exists $self->{opts}->{$_}
+         && exists $dsn->{$_}
+         && defined $dsn->{$_}
+      } @keys);
 }
 
 sub usage {

bin/pt-index-usage

@@ -28,6 +28,8 @@ use Data::Dumper;
 $Data::Dumper::Indent    = 0;
 $Data::Dumper::Quotekeys = 0;
 
+my $dsn_sep = qr/(?<!\\),/;
+
 eval {
    require DBI;
 };
@@ -82,7 +84,8 @@ sub parse {
    my %final_props;
    my $opts = $self->{opts};
 
-   foreach my $dsn_part ( split(/,/, $dsn) ) {
+   foreach my $dsn_part ( split($dsn_sep, $dsn) ) {
+      $dsn_part =~ s/\\,/,/g;
       if ( my ($prop_key, $prop_val) = $dsn_part =~  m/^(.)=(.*)$/ ) {
          $given_props{$prop_key} = $prop_val;
       }
@@ -141,12 +144,14 @@ sub parse_options {
 sub as_string {
    my ( $self, $dsn, $props ) = @_;
    return $dsn unless ref $dsn;
-   my %allowed = $props ? map { $_=>1 } @$props : ();
+   my @keys = $props ? @$props : sort keys %$dsn;
    return join(',',
-      map  { "$_=" . ($_ eq 'p' ? '...' : $dsn->{$_})  }
-      grep { defined $dsn->{$_} && $self->{opts}->{$_} }
-      grep { !$props || $allowed{$_}                   }
-      sort keys %$dsn );
+      map  { "$_=" . ($_ eq 'p' ? '...' : $dsn->{$_}) }
+      grep {
+         exists $self->{opts}->{$_}
+         && exists $dsn->{$_}
+         && defined $dsn->{$_}
+      } @keys);
 }
 
 sub usage {

bin/pt-kill

@@ -1136,6 +1136,8 @@ use Data::Dumper;
 $Data::Dumper::Indent    = 0;
 $Data::Dumper::Quotekeys = 0;
 
+my $dsn_sep = qr/(?<!\\),/;
+
 eval {
    require DBI;
 };
@@ -1190,7 +1192,8 @@ sub parse {
    my %final_props;
    my $opts = $self->{opts};
 
-   foreach my $dsn_part ( split(/,/, $dsn) ) {
+   foreach my $dsn_part ( split($dsn_sep, $dsn) ) {
+      $dsn_part =~ s/\\,/,/g;
       if ( my ($prop_key, $prop_val) = $dsn_part =~  m/^(.)=(.*)$/ ) {
          $given_props{$prop_key} = $prop_val;
       }

bin/pt-log-player

@@ -2008,6 +2008,8 @@ use Data::Dumper;
 $Data::Dumper::Indent    = 0;
 $Data::Dumper::Quotekeys = 0;
 
+my $dsn_sep = qr/(?<!\\),/;
+
 eval {
    require DBI;
 };
@@ -2062,7 +2064,8 @@ sub parse {
    my %final_props;
    my $opts = $self->{opts};
 
-   foreach my $dsn_part ( split(/,/, $dsn) ) {
+   foreach my $dsn_part ( split($dsn_sep, $dsn) ) {
+      $dsn_part =~ s/\\,/,/g;
       if ( my ($prop_key, $prop_val) = $dsn_part =~  m/^(.)=(.*)$/ ) {
          $given_props{$prop_key} = $prop_val;
       }
@@ -2121,12 +2124,14 @@ sub parse_options {
 sub as_string {
    my ( $self, $dsn, $props ) = @_;
    return $dsn unless ref $dsn;
-   my %allowed = $props ? map { $_=>1 } @$props : ();
+   my @keys = $props ? @$props : sort keys %$dsn;
    return join(',',
-      map  { "$_=" . ($_ eq 'p' ? '...' : $dsn->{$_})  }
-      grep { defined $dsn->{$_} && $self->{opts}->{$_} }
-      grep { !$props || $allowed{$_}                   }
-      sort keys %$dsn );
+      map  { "$_=" . ($_ eq 'p' ? '...' : $dsn->{$_}) }
+      grep {
+         exists $self->{opts}->{$_}
+         && exists $dsn->{$_}
+         && defined $dsn->{$_}
+      } @keys);
 }
 
 sub usage {

bin/pt-online-schema-change

@@ -1136,6 +1136,8 @@ use Data::Dumper;
 $Data::Dumper::Indent    = 0;
 $Data::Dumper::Quotekeys = 0;
 
+my $dsn_sep = qr/(?<!\\),/;
+
 eval {
    require DBI;
 };
@@ -1190,7 +1192,8 @@ sub parse {
    my %final_props;
    my $opts = $self->{opts};
 
-   foreach my $dsn_part ( split(/,/, $dsn) ) {
+   foreach my $dsn_part ( split($dsn_sep, $dsn) ) {
+      $dsn_part =~ s/\\,/,/g;
       if ( my ($prop_key, $prop_val) = $dsn_part =~  m/^(.)=(.*)$/ ) {
          $given_props{$prop_key} = $prop_val;
       }

bin/pt-query-advisor

@@ -28,6 +28,8 @@ use Data::Dumper;
 $Data::Dumper::Indent    = 0;
 $Data::Dumper::Quotekeys = 0;
 
+my $dsn_sep = qr/(?<!\\),/;
+
 eval {
    require DBI;
 };
@@ -82,7 +84,8 @@ sub parse {
    my %final_props;
    my $opts = $self->{opts};
 
-   foreach my $dsn_part ( split(/,/, $dsn) ) {
+   foreach my $dsn_part ( split($dsn_sep, $dsn) ) {
+      $dsn_part =~ s/\\,/,/g;
       if ( my ($prop_key, $prop_val) = $dsn_part =~  m/^(.)=(.*)$/ ) {
          $given_props{$prop_key} = $prop_val;
       }

bin/pt-query-digest

@@ -28,6 +28,8 @@ use Data::Dumper;
 $Data::Dumper::Indent    = 0;
 $Data::Dumper::Quotekeys = 0;
 
+my $dsn_sep = qr/(?<!\\),/;
+
 eval {
    require DBI;
 };
@@ -82,7 +84,8 @@ sub parse {
    my %final_props;
    my $opts = $self->{opts};
 
-   foreach my $dsn_part ( split(/,/, $dsn) ) {
+   foreach my $dsn_part ( split($dsn_sep, $dsn) ) {
+      $dsn_part =~ s/\\,/,/g;
       if ( my ($prop_key, $prop_val) = $dsn_part =~  m/^(.)=(.*)$/ ) {
          $given_props{$prop_key} = $prop_val;
       }
@@ -141,12 +144,14 @@ sub parse_options {
 sub as_string {
    my ( $self, $dsn, $props ) = @_;
    return $dsn unless ref $dsn;
-   my %allowed = $props ? map { $_=>1 } @$props : ();
+   my @keys = $props ? @$props : sort keys %$dsn;
    return join(',',
-      map  { "$_=" . ($_ eq 'p' ? '...' : $dsn->{$_})  }
-      grep { defined $dsn->{$_} && $self->{opts}->{$_} }
-      grep { !$props || $allowed{$_}                   }
-      sort keys %$dsn );
+      map  { "$_=" . ($_ eq 'p' ? '...' : $dsn->{$_}) }
+      grep {
+         exists $self->{opts}->{$_}
+         && exists $dsn->{$_}
+         && defined $dsn->{$_}
+      } @keys);
 }
 
 sub usage {

bin/pt-show-grants

@@ -1053,6 +1053,8 @@ use Data::Dumper;
 $Data::Dumper::Indent    = 0;
 $Data::Dumper::Quotekeys = 0;
 
+my $dsn_sep = qr/(?<!\\),/;
+
 eval {
    require DBI;
 };
@@ -1107,7 +1109,8 @@ sub parse {
    my %final_props;
    my $opts = $self->{opts};
 
-   foreach my $dsn_part ( split(/,/, $dsn) ) {
+   foreach my $dsn_part ( split($dsn_sep, $dsn) ) {
+      $dsn_part =~ s/\\,/,/g;
       if ( my ($prop_key, $prop_val) = $dsn_part =~  m/^(.)=(.*)$/ ) {
          $given_props{$prop_key} = $prop_val;
       }
@@ -1166,12 +1169,14 @@ sub parse_options {
 sub as_string {
    my ( $self, $dsn, $props ) = @_;
    return $dsn unless ref $dsn;
-   my %allowed = $props ? map { $_=>1 } @$props : ();
+   my @keys = $props ? @$props : sort keys %$dsn;
    return join(',',
-      map  { "$_=" . ($_ eq 'p' ? '...' : $dsn->{$_})  }
-      grep { defined $dsn->{$_} && $self->{opts}->{$_} }
-      grep { !$props || $allowed{$_}                   }
-      sort keys %$dsn );
+      map  { "$_=" . ($_ eq 'p' ? '...' : $dsn->{$_}) }
+      grep {
+         exists $self->{opts}->{$_}
+         && exists $dsn->{$_}
+         && defined $dsn->{$_}
+      } @keys);
 }
 
 sub usage {

bin/pt-slave-delay

@@ -1136,6 +1136,8 @@ use Data::Dumper;
 $Data::Dumper::Indent    = 0;
 $Data::Dumper::Quotekeys = 0;
 
+my $dsn_sep = qr/(?<!\\),/;
+
 eval {
    require DBI;
 };
@@ -1190,7 +1192,8 @@ sub parse {
    my %final_props;
    my $opts = $self->{opts};
 
-   foreach my $dsn_part ( split(/,/, $dsn) ) {
+   foreach my $dsn_part ( split($dsn_sep, $dsn) ) {
+      $dsn_part =~ s/\\,/,/g;
       if ( my ($prop_key, $prop_val) = $dsn_part =~  m/^(.)=(.*)$/ ) {
          $given_props{$prop_key} = $prop_val;
       }
@@ -1249,12 +1252,14 @@ sub parse_options {
 sub as_string {
    my ( $self, $dsn, $props ) = @_;
    return $dsn unless ref $dsn;
-   my %allowed = $props ? map { $_=>1 } @$props : ();
+   my @keys = $props ? @$props : sort keys %$dsn;
    return join(',',
-      map  { "$_=" . ($_ eq 'p' ? '...' : $dsn->{$_})  }
-      grep { defined $dsn->{$_} && $self->{opts}->{$_} }
-      grep { !$props || $allowed{$_}                   }
-      sort keys %$dsn );
+      map  { "$_=" . ($_ eq 'p' ? '...' : $dsn->{$_}) }
+      grep {
+         exists $self->{opts}->{$_}
+         && exists $dsn->{$_}
+         && defined $dsn->{$_}
+      } @keys);
 }
 
 sub usage {

bin/pt-slave-find

@@ -1053,6 +1053,8 @@ use Data::Dumper;
 $Data::Dumper::Indent    = 0;
 $Data::Dumper::Quotekeys = 0;
 
+my $dsn_sep = qr/(?<!\\),/;
+
 eval {
    require DBI;
 };
@@ -1107,7 +1109,8 @@ sub parse {
    my %final_props;
    my $opts = $self->{opts};
 
-   foreach my $dsn_part ( split(/,/, $dsn) ) {
+   foreach my $dsn_part ( split($dsn_sep, $dsn) ) {
+      $dsn_part =~ s/\\,/,/g;
       if ( my ($prop_key, $prop_val) = $dsn_part =~  m/^(.)=(.*)$/ ) {
          $given_props{$prop_key} = $prop_val;
       }
@@ -1166,12 +1169,14 @@ sub parse_options {
 sub as_string {
    my ( $self, $dsn, $props ) = @_;
    return $dsn unless ref $dsn;
-   my %allowed = $props ? map { $_=>1 } @$props : ();
+   my @keys = $props ? @$props : sort keys %$dsn;
    return join(',',
-      map  { "$_=" . ($_ eq 'p' ? '...' : $dsn->{$_})  }
-      grep { defined $dsn->{$_} && $self->{opts}->{$_} }
-      grep { !$props || $allowed{$_}                   }
-      sort keys %$dsn );
+      map  { "$_=" . ($_ eq 'p' ? '...' : $dsn->{$_}) }
+      grep {
+         exists $self->{opts}->{$_}
+         && exists $dsn->{$_}
+         && defined $dsn->{$_}
+      } @keys);
 }
 
 sub usage {

bin/pt-slave-restart

@@ -1213,6 +1213,8 @@ use Data::Dumper;
 $Data::Dumper::Indent    = 0;
 $Data::Dumper::Quotekeys = 0;
 
+my $dsn_sep = qr/(?<!\\),/;
+
 eval {
    require DBI;
 };
@@ -1267,7 +1269,8 @@ sub parse {
    my %final_props;
    my $opts = $self->{opts};
 
-   foreach my $dsn_part ( split(/,/, $dsn) ) {
+   foreach my $dsn_part ( split($dsn_sep, $dsn) ) {
+      $dsn_part =~ s/\\,/,/g;
       if ( my ($prop_key, $prop_val) = $dsn_part =~  m/^(.)=(.*)$/ ) {
          $given_props{$prop_key} = $prop_val;
       }
@@ -1326,12 +1329,14 @@ sub parse_options {
 sub as_string {
    my ( $self, $dsn, $props ) = @_;
    return $dsn unless ref $dsn;
-   my %allowed = $props ? map { $_=>1 } @$props : ();
+   my @keys = $props ? @$props : sort keys %$dsn;
    return join(',',
-      map  { "$_=" . ($_ eq 'p' ? '...' : $dsn->{$_})  }
-      grep { defined $dsn->{$_} && $self->{opts}->{$_} }
-      grep { !$props || $allowed{$_}                   }
-      sort keys %$dsn );
+      map  { "$_=" . ($_ eq 'p' ? '...' : $dsn->{$_}) }
+      grep {
+         exists $self->{opts}->{$_}
+         && exists $dsn->{$_}
+         && defined $dsn->{$_}
+      } @keys);
 }
 
 sub usage {

bin/pt-table-checksum

@@ -28,6 +28,8 @@ use Data::Dumper;
 $Data::Dumper::Indent    = 0;
 $Data::Dumper::Quotekeys = 0;
 
+my $dsn_sep = qr/(?<!\\),/;
+
 eval {
    require DBI;
 };
@@ -82,7 +84,8 @@ sub parse {
    my %final_props;
    my $opts = $self->{opts};
 
-   foreach my $dsn_part ( split(/,/, $dsn) ) {
+   foreach my $dsn_part ( split($dsn_sep, $dsn) ) {
+      $dsn_part =~ s/\\,/,/g;
       if ( my ($prop_key, $prop_val) = $dsn_part =~  m/^(.)=(.*)$/ ) {
          $given_props{$prop_key} = $prop_val;
       }

bin/pt-table-sync

@@ -1172,6 +1172,8 @@ use Data::Dumper;
 $Data::Dumper::Indent    = 0;
 $Data::Dumper::Quotekeys = 0;
 
+my $dsn_sep = qr/(?<!\\),/;
+
 eval {
    require DBI;
 };
@@ -1226,7 +1228,8 @@ sub parse {
    my %final_props;
    my $opts = $self->{opts};
 
-   foreach my $dsn_part ( split(/,/, $dsn) ) {
+   foreach my $dsn_part ( split($dsn_sep, $dsn) ) {
+      $dsn_part =~ s/\\,/,/g;
       if ( my ($prop_key, $prop_val) = $dsn_part =~  m/^(.)=(.*)$/ ) {
          $given_props{$prop_key} = $prop_val;
       }

bin/pt-table-usage

@@ -28,6 +28,8 @@ use Data::Dumper;
 $Data::Dumper::Indent    = 0;
 $Data::Dumper::Quotekeys = 0;
 
+my $dsn_sep = qr/(?<!\\),/;
+
 eval {
    require DBI;
 };
@@ -82,7 +84,8 @@ sub parse {
    my %final_props;
    my $opts = $self->{opts};
 
-   foreach my $dsn_part ( split(/,/, $dsn) ) {
+   foreach my $dsn_part ( split($dsn_sep, $dsn) ) {
+      $dsn_part =~ s/\\,/,/g;
       if ( my ($prop_key, $prop_val) = $dsn_part =~  m/^(.)=(.*)$/ ) {
          $given_props{$prop_key} = $prop_val;
       }

bin/pt-upgrade

@@ -28,6 +28,8 @@ use Data::Dumper;
 $Data::Dumper::Indent    = 0;
 $Data::Dumper::Quotekeys = 0;
 
+my $dsn_sep = qr/(?<!\\),/;
+
 eval {
    require DBI;
 };
@@ -82,7 +84,8 @@ sub parse {
    my %final_props;
    my $opts = $self->{opts};
 
-   foreach my $dsn_part ( split(/,/, $dsn) ) {
+   foreach my $dsn_part ( split($dsn_sep, $dsn) ) {
+      $dsn_part =~ s/\\,/,/g;
       if ( my ($prop_key, $prop_val) = $dsn_part =~  m/^(.)=(.*)$/ ) {
          $given_props{$prop_key} = $prop_val;
       }

bin/pt-variable-advisor

@@ -1053,6 +1053,8 @@ use Data::Dumper;
 $Data::Dumper::Indent    = 0;
 $Data::Dumper::Quotekeys = 0;
 
+my $dsn_sep = qr/(?<!\\),/;
+
 eval {
    require DBI;
 };
@@ -1107,7 +1109,8 @@ sub parse {
    my %final_props;
    my $opts = $self->{opts};
 
-   foreach my $dsn_part ( split(/,/, $dsn) ) {
+   foreach my $dsn_part ( split($dsn_sep, $dsn) ) {
+      $dsn_part =~ s/\\,/,/g;
       if ( my ($prop_key, $prop_val) = $dsn_part =~  m/^(.)=(.*)$/ ) {
          $given_props{$prop_key} = $prop_val;
       }
@@ -1166,12 +1169,14 @@ sub parse_options {
 sub as_string {
    my ( $self, $dsn, $props ) = @_;
    return $dsn unless ref $dsn;
-   my %allowed = $props ? map { $_=>1 } @$props : ();
+   my @keys = $props ? @$props : sort keys %$dsn;
    return join(',',
-      map  { "$_=" . ($_ eq 'p' ? '...' : $dsn->{$_})  }
-      grep { defined $dsn->{$_} && $self->{opts}->{$_} }
-      grep { !$props || $allowed{$_}                   }
-      sort keys %$dsn );
+      map  { "$_=" . ($_ eq 'p' ? '...' : $dsn->{$_}) }
+      grep {
+         exists $self->{opts}->{$_}
+         && exists $dsn->{$_}
+         && defined $dsn->{$_}
+      } @keys);
 }
 
 sub usage {

bin/pt-visual-explain

@@ -1725,6 +1725,8 @@ use Data::Dumper;
 $Data::Dumper::Indent    = 0;
 $Data::Dumper::Quotekeys = 0;
 
+my $dsn_sep = qr/(?<!\\),/;
+
 eval {
    require DBI;
 };
@@ -1779,7 +1781,8 @@ sub parse {
    my %final_props;
    my $opts = $self->{opts};
 
-   foreach my $dsn_part ( split(/,/, $dsn) ) {
+   foreach my $dsn_part ( split($dsn_sep, $dsn) ) {
+      $dsn_part =~ s/\\,/,/g;
       if ( my ($prop_key, $prop_val) = $dsn_part =~  m/^(.)=(.*)$/ ) {
          $given_props{$prop_key} = $prop_val;
       }
@@ -1838,12 +1841,14 @@ sub parse_options {
 sub as_string {
    my ( $self, $dsn, $props ) = @_;
    return $dsn unless ref $dsn;
-   my %allowed = $props ? map { $_=>1 } @$props : ();
+   my @keys = $props ? @$props : sort keys %$dsn;
    return join(',',
-      map  { "$_=" . ($_ eq 'p' ? '...' : $dsn->{$_})  }
-      grep { defined $dsn->{$_} && $self->{opts}->{$_} }
-      grep { !$props || $allowed{$_}                   }
-      sort keys %$dsn );
+      map  { "$_=" . ($_ eq 'p' ? '...' : $dsn->{$_}) }
+      grep {
+         exists $self->{opts}->{$_}
+         && exists $dsn->{$_}
+         && defined $dsn->{$_}
+      } @keys);
 }
 
 sub usage {