OK, this is so odd I know it's something I'm going to be something dumb that I'll be embarrassed about. When I created the testcase, it works fine. When I run the complete program, there's a problem. But here's why that's odd -- instead of posting a lot of code, Excel spreadsheets, etc, I just put a Data::Dumper command for %categories right before I did the print in the original program. Then I created the testcase, copied the output from Data::Dumper and just set %categories to the content of Data::Dumper, then did the print using the same code. Works fine! Now if I run the original program, I see the output from Data::Dumper isn't changed -- but the final printed output is screwed up. I'm confused since the content of %categories looks EXACTLY the same! (I do agree, would be better/more flexible to use recursion! However, the testcase works) Here's the testcase and it's output: 

use Data::Dumper;

%categories = (
          'lighting' => {
                          'wall lamps' => {
                                            'traditional/transitional'
+ => 1
                                          },
                          'table lamps' => 1,
                          'light bulbs' => 1,
                          'floor lamps' => 1,
                          'table lamp' => {
                                            'traditional/transitional'
+ => 1
                                          },
                          'pendant lamps' => {
                                               'contemporary/modern' =
+> 1,
                                               'traditional/transition
+al' => 1
                                             }
                        },
          'window treatments' => {
                                   'drapery panels' => 1
                                 },
          'furniture' => {
                           'chairs' => 1,
                           'contemporary/modern' => 1,
                           'desks' => {
                                        'writing table' => 1,
                                        'closed desks' => 1
                                      },
                           'chests' => {
                                         'ethnic/asian' => 1,
                                         'traditional/transitional' =>
+ 1,
                                         'rustic' => 1
                                       },
                           'cabinets/Étagères' => {
                                                    'wine cabinet' => 
+1,
                                                    'traditional/trans
+itional' => 1,
                                                    'cabinets' => 1,
                                                    'Étagères' => 1
                                                  },
                           'bookshelves/shelving units' => 1,
                           'end tables/nightstands/side tables' => 1,
                           'ottomans/benches/stools' => 1,
                           'tables' => 1,
                           'cabinets/etageres' => 1,
                           'screens/room dividers' => 1
                         },
          'wall décor' => {
                            'alternative wall décor' => 1,
                            'alternative art' => {
                                                   'wall sculpture' =>
+ 1
                                                 },
                            'mirrors' => 1,
                            'wall art' => 1
                          },
          'accessories' => {
                             'statuary/sculptures' => 1,
                             'contemporary/modern' => 1,
                             'hanging candleholders/sconces' => 1,
                             'frames' => 1,
                             'storage boxes/trunks' => 1,
                             'magazine holders' => 1,
                             'miscellaneous' => 1,
                             'botanicals and silk florals' => 1,
                             'decorative boxes' => 1,
                             'ethnic/asian' => 1,
                             'ladders' => 1,
                             'urban' => 1,
                             'fireplace accessories' => 1,
                             'candleholders' => 1,
                             'bookends' => 1,
                             'trays' => 1,
                             'statuary/sculpture' => 1,
                             'vases/bowls/urns' => 1,
                             'traditional/transitional' => 1,
                             'clocks' => {
                                           'wall clocks' => 1
                                         },
                             'rustic' => 1
                           }
                       );

print Dumper(\%categories);
foreach $top ( sort keys %categories){
    if($top =~ /^\s*$/){$top="<blank>";}
    print "$top\n";
    foreach $second ( sort keys %{$categories{$top}}){
       if($second  =~ /^\s*$/){$second="<blank>";}
       print "...$second\n";
       foreach $third (sort keys %{$categories{$top}{$second}}){
        if($third  =~ /^\s*$/){$third="<blank>";}
           print "......$third\n";
       }
    }
}

(Strawberry Perl 5.10, Cygwin)
$ perl tst.pl
$VAR1 = {
          'lighting' => {
                          'wall lamps' => {
                                            'traditional/transitional'
+ => 1
                                          },
                          'table lamps' => 1,
                          'light bulbs' => 1,
                          'floor lamps' => 1,
                          'table lamp' => {
                                            'traditional/transitional'
+ => 1
                                          },
                          'pendant lamps' => {
                                               'contemporary/modern' =
+> 1,
                                               'traditional/transition
+al' => 1
                                             }
                        },
          'window treatments' => {
                                   'drapery panels' => 1
                                 },
          'furniture' => {
                           'chairs' => 1,
                           'contemporary/modern' => 1,
                           'desks' => {
                                        'writing table' => 1,
                                        'closed desks' => 1
                                      },
                           'bookshelves/shelving units' => 1,
                           'cabinets/&#9556;tag&#934;res' => {
                                                    'traditional/trans
+itional' => 1,
                                                    'wine cabinet' => 
+1,
                                                    'cabinets' => 1,
                                                    '&#9556;tag&#934;r
+es' => 1
                                                  },
                           'chests' => {
                                         'traditional/transitional' =>
+ 1,
                                         'ethnic/asian' => 1,
                                         'rustic' => 1
                                       },
                           'end tables/nightstands/side tables' => 1,
                           'ottomans/benches/stools' => 1,
                           'tables' => 1,
                           'screens/room dividers' => 1,
                           'cabinets/etageres' => 1
                         },
          'wall d&#920;cor' => {
                            'alternative wall d&#920;cor' => 1,
                            'alternative art' => {
                                                   'wall sculpture' =>
+ 1
                                                 },
                            'mirrors' => 1,
                            'wall art' => 1
                          },
          'accessories' => {
                             'statuary/sculptures' => 1,
                             'contemporary/modern' => 1,
                             'hanging candleholders/sconces' => 1,
                             'frames' => 1,
                             'magazine holders' => 1,
                             'storage boxes/trunks' => 1,
                             'miscellaneous' => 1,
                             'botanicals and silk florals' => 1,
                             'ethnic/asian' => 1,
                             'decorative boxes' => 1,
                             'ladders' => 1,
                             'urban' => 1,
                             'fireplace accessories' => 1,
                             'candleholders' => 1,
                             'bookends' => 1,
                             'trays' => 1,
                             'statuary/sculpture' => 1,
                             'vases/bowls/urns' => 1,
                             'traditional/transitional' => 1,
                             'clocks' => {
                                           'wall clocks' => 1
                                         },
                             'rustic' => 1
                           }
        };
accessories
...bookends
...botanicals and silk florals
...candleholders
...clocks
......wall clocks
...contemporary/modern
...decorative boxes
...ethnic/asian
...fireplace accessories
...frames
...hanging candleholders/sconces
...ladders
...magazine holders
...miscellaneous
...rustic
...statuary/sculpture
...statuary/sculptures
...storage boxes/trunks
...traditional/transitional
...trays
...urban
...vases/bowls/urns
furniture
...bookshelves/shelving units
...cabinets/etageres
...cabinets/&#9556;tag&#934;res
......cabinets
......traditional/transitional
......wine cabinet
......&#9556;tag&#934;res
...chairs
...chests
......ethnic/asian
......rustic
......traditional/transitional
...contemporary/modern
...desks
......closed desks
......writing table
...end tables/nightstands/side tables
...ottomans/benches/stools
...screens/room dividers
...tables
lighting
...floor lamps
...light bulbs
...pendant lamps
......contemporary/modern
......traditional/transitional
...table lamp
......traditional/transitional
...table lamps
...wall lamps
......traditional/transitional
wall d&#920;cor
...alternative art
......wall sculpture
...alternative wall d&#920;cor
...mirrors
...wall art
window treatments
...drapery panels

[download]

So.. that's correct. No issues with how I'm reading the hash. However in the main program, the output looks like this. Look at accessories->bookends -- a whole new level of hierarchy at the third level with lots of bogus info! 

$VAR1 = {
          'lighting' => {
                          'wall lamps' => {
                                            'traditional/transitional'
+ => 1
                                          },
                          'table lamps' => 1,
                          'light bulbs' => 1,
                          'floor lamps' => 1,
                          'table lamp' => {
                                            'traditional/transitional'
+ => 1
                                          },
                          'pendant lamps' => {
                                               'contemporary/modern' =
+> 1,
                                               'traditional/transition
+al' => 1
                                             }
                        },
          'window treatments' => {
                                   'drapery panels' => 1
                                 },
          'furniture' => {
                           'chairs' => 1,
                           'contemporary/modern' => 1,
                           'desks' => {
                                        'writing table' => 1,
                                        'closed desks' => 1
                                      },
                           'chests' => {
                                         'ethnic/asian' => 1,
                                         'traditional/transitional' =>
+ 1,
                                         'rustic' => 1
                                       },
                           'cabinets/Étagères' => {
                                                    'wine cabinet' => 
+1,
                                                    'traditional/trans
+itional' => 1,
                                                    'cabinets' => 1,
                                                    'Étagères' => 1
                                                  },
                           'bookshelves/shelving units' => 1,
                           'end tables/nightstands/side tables' => 1,
                           'ottomans/benches/stools' => 1,
                           'tables' => 1,
                           'cabinets/etageres' => 1,
                           'screens/room dividers' => 1
                         },
          'wall décor' => {
                            'alternative wall décor' => 1,
                            'alternative art' => {
                                                   'wall sculpture' =>
+ 1
                                                 },
                            'mirrors' => 1,
                            'wall art' => 1
                          },
          'accessories' => {
                             'statuary/sculptures' => 1,
                             'contemporary/modern' => 1,
                             'hanging candleholders/sconces' => 1,
                             'frames' => 1,
                             'storage boxes/trunks' => 1,
                             'magazine holders' => 1,
                             'miscellaneous' => 1,
                             'botanicals and silk florals' => 1,
                             'decorative boxes' => 1,
                             'ethnic/asian' => 1,
                             'ladders' => 1,
                             'urban' => 1,
                             'fireplace accessories' => 1,
                             'candleholders' => 1,
                             'bookends' => 1,
                             'trays' => 1,
                             'statuary/sculpture' => 1,
                             'vases/bowls/urns' => 1,
                             'traditional/transitional' => 1,
                             'clocks' => {
                                           'wall clocks' => 1
                                         },
                             'rustic' => 1
                           }
        };
accessories
...bookends
......abstract
......animal
......antique bronze
......architectural
......arts and crafts
......asian
......benches
......black
......black and white
......black silver/chrome/nickel
......bronze
......bronze/gold/brass
......canvas giclee
......ceramic/porcelain
......chalkboards
......children
......coastal
......coffee/cocktail tables
......coffee/kitchen/wine
......coffee/wine/kitchen
......contemporary
......contemporary/modern
......decorative arts
......end tables/nightstands/side tables
......ethnic
......ethnic/asian
......floral/botanical
......florals
......florals and botanicals
......french
......glass/chrome
......glass/crystal
......gold/bronze
......hand painted
......hanging candleholders/sconces
......ironwork
......ironwork/scrollwork
......landscape
......long/full-length
......masculine
......modern
......movie/game
......movies/games
......music
......nature
......occasional chairs
......office
......oil reproductions
......ottomans
......oval
......pearl/shell
......people
......photography
......plaques
......rattan
......round
......round mirror
......rustic
......rustic/lodge
......sets
......shell/pearl
......sideboards/consoles
......silver
......silver/chrome/nickel
......special shapes
......square
......starburst
......still lifes
......stone
......storage benches
......tabletop
......theme
......traditional
......traditional/transitional
......transitional
......transitional/traditional
......tuscan-european
......tuscan/european
......tuscan/mediterranean
......urban
......venetian
......wall sculpture
......wood
...botanicals and silk florals
......abstract
......animal
......antique bronze
......architectural
......arts and crafts
......asian
......benches
......black
......black and white
......black silver/chrome/nickel
......bronze
......bronze/gold/brass
......canvas giclee
......ceramic/porcelain
......chalkboards
......children
......coastal
......coffee/cocktail tables
......coffee/kitchen/wine
......coffee/wine/kitchen
......contemporary
......contemporary/modern
......decorative arts
......end tables/nightstands/side tables
......ethnic
......ethnic/asian
......floral/botanical
......florals
......florals and botanicals
......french
......glass/chrome
......glass/crystal
......gold/bronze
......hand painted
......hanging candleholders/sconces
......ironwork
......ironwork/scrollwork
......landscape
......long/full-length
......masculine
......modern
......movie/game
......movies/games
......music
......nature
......occasional chairs
......office
......oil reproductions
......ottomans
......oval
......pearl/shell
......people
......photography
......plaques
......rattan
......round
......round mirror
......rustic
......rustic/lodge
......sets
......shell/pearl
......sideboards/consoles
......silver
......silver/chrome/nickel
......special shapes
......square
......starburst
......still lifes
......stone
......storage benches
......tabletop
......theme
......traditional
......traditional/transitional
......transitional
......transitional/traditional
......tuscan-european
......tuscan/european
......tuscan/mediterranean
......urban
......venetian
......wall sculpture
......wood
...candleholders
......abstract
......animal
......antique bronze
......architectural
......arts and crafts
......asian
......benches
......black
......black and white
......black silver/chrome/nickel
......bronze
......bronze/gold/brass
......canvas giclee
......ceramic/porcelain
......chalkboards
......children
......coastal
......coffee/cocktail tables
......coffee/kitchen/wine
......coffee/wine/kitchen
......contemporary
......contemporary/modern
......decorative arts
......end tables/nightstands/side tables
......ethnic
......ethnic/asian
......floral/botanical
......florals
......florals and botanicals
......french
......glass/chrome
......glass/crystal
......gold/bronze
......hand painted
......hanging candleholders/sconces
......ironwork
......ironwork/scrollwork
......landscape
......long/full-length
......masculine
......modern
......movie/game
......movies/games
......music
......nature
......occasional chairs
......office
......oil reproductions
......ottomans
......oval
......pearl/shell
......people
......photography
......plaques
......rattan
......round
......round mirror
......rustic
......rustic/lodge
......sets
......shell/pearl
......sideboards/consoles
......silver
......silver/chrome/nickel
......special shapes
......square
......starburst
......still lifes
......stone
......storage benches
......tabletop
......theme
......traditional
......traditional/transitional
......transitional
......transitional/traditional
......tuscan-european
......tuscan/european
......tuscan/mediterranean
......urban
......venetian
......wall sculpture
......wood
...clocks
......wall clocks
...contemporary/modern
......abstract
......animal
......antique bronze
......architectural
......arts and crafts
......asian
......benches
......black
......black and white
......black silver/chrome/nickel
......bronze
......bronze/gold/brass
......canvas giclee
......ceramic/porcelain
......chalkboards
......children
......coastal
......coffee/cocktail tables
......coffee/kitchen/wine
......coffee/wine/kitchen
......contemporary
......contemporary/modern
......decorative arts
......end tables/nightstands/side tables
......ethnic
......ethnic/asian
......floral/botanical
......florals
......florals and botanicals
......french
......glass/chrome
......glass/crystal
......gold/bronze
......hand painted
......hanging candleholders/sconces
......ironwork
......ironwork/scrollwork
......landscape
......long/full-length
......masculine
......modern
......movie/game
......movies/games
......music
......nature
......occasional chairs
......office
......oil reproductions
......ottomans
......oval
......pearl/shell
......people
......photography
......plaques
......rattan
......round
......round mirror
......rustic
......rustic/lodge
......sets
......shell/pearl
......sideboards/consoles
......silver
......silver/chrome/nickel
......special shapes
......square
......starburst
......still lifes
......stone
......storage benches
......tabletop
......theme
......traditional
......traditional/transitional
......transitional
......transitional/traditional
......tuscan-european
......tuscan/european
......tuscan/mediterranean
......urban
......venetian
......wall sculpture
......wood
...decorative boxes
......abstract
......animal
......antique bronze
......architectural
......arts and crafts
......asian
......benches
......black
......black and white
......black silver/chrome/nickel
......bronze
......bronze/gold/brass
......canvas giclee
......ceramic/porcelain
......chalkboards
......children
......coastal
......coffee/cocktail tables
......coffee/kitchen/wine
......coffee/wine/kitchen
......contemporary
......contemporary/modern
......decorative arts
......end tables/nightstands/side tables
......ethnic
......ethnic/asian
......floral/botanical
......florals
......florals and botanicals
......french
......glass/chrome
......glass/crystal
......gold/bronze
......hand painted
......hanging candleholders/sconces
......ironwork
......ironwork/scrollwork
......landscape
......long/full-length
......masculine
......modern
......movie/game
......movies/games
......music
......nature
......occasional chairs
......office
......oil reproductions
......ottomans
......oval
......pearl/shell
......people
......photography
......plaques
......rattan
......round
......round mirror
......rustic
......rustic/lodge
......sets
......shell/pearl
......sideboards/consoles
......silver
......silver/chrome/nickel
......special shapes
......square
......starburst
......still lifes
......stone
......storage benches
......tabletop
......theme
......traditional
......traditional/transitional
......transitional
......transitional/traditional
......tuscan-european
......tuscan/european
......tuscan/mediterranean
......urban
......venetian
......wall sculpture
......wood
...ethnic/asian
......abstract
......animal
......antique bronze
......architectural
......arts and crafts
......asian
......benches
......black
......black and white
......black silver/chrome/nickel
......bronze
......bronze/gold/brass
......canvas giclee
......ceramic/porcelain
......chalkboards
......children
......coastal
......coffee/cocktail tables
......coffee/kitchen/wine
......coffee/wine/kitchen
......contemporary
......contemporary/modern
......decorative arts
......end tables/nightstands/side tables
......ethnic
......ethnic/asian
......floral/botanical
......florals
......florals and botanicals
......french
......glass/chrome
......glass/crystal
......gold/bronze
......hand painted
......hanging candleholders/sconces
......ironwork
......ironwork/scrollwork
......landscape
......long/full-length
......masculine
......modern
......movie/game
......movies/games
......music
......nature
......occasional chairs
......office
......oil reproductions
......ottomans
......oval
......pearl/shell
......people
......photography
......plaques
......rattan
......round
......round mirror
......rustic
......rustic/lodge
......sets
......shell/pearl
......sideboards/consoles
......silver
......silver/chrome/nickel
......special shapes
......square
......starburst
......still lifes
......stone
......storage benches
......tabletop
......theme
......traditional
......traditional/transitional
......transitional
......transitional/traditional
......tuscan-european
......tuscan/european
......tuscan/mediterranean
......urban
......venetian
......wall sculpture
......wood
...fireplace accessories
......abstract
......animal
......antique bronze
......architectural
......arts and crafts
......asian
......benches
......black
......black and white
......black silver/chrome/nickel
......bronze
......bronze/gold/brass
......canvas giclee
......ceramic/porcelain
......chalkboards
......children
......coastal
......coffee/cocktail tables
......coffee/kitchen/wine
......coffee/wine/kitchen
......contemporary
......contemporary/modern
......decorative arts
......end tables/nightstands/side tables
......ethnic
......ethnic/asian
......floral/botanical
......florals
......florals and botanicals
......french
......glass/chrome
......glass/crystal
......gold/bronze
......hand painted
......hanging candleholders/sconces
......ironwork
......ironwork/scrollwork
......landscape
......long/full-length
......masculine
......modern
......movie/game
......movies/games
......music
......nature
......occasional chairs
......office
......oil reproductions
......ottomans
......oval
......pearl/shell
......people
......photography
......plaques
......rattan
......round
......round mirror
......rustic
......rustic/lodge
......sets
......shell/pearl
......sideboards/consoles
......silver
......silver/chrome/nickel
......special shapes
......square
......starburst
......still lifes
......stone
......storage benches
......tabletop
......theme
......traditional
......traditional/transitional
......transitional
......transitional/traditional
......tuscan-european
......tuscan/european
......tuscan/mediterranean
......urban
......venetian
......wall sculpture
......wood
...frames
......abstract
......animal
......antique bronze
......architectural
......arts and crafts
......asian
......benches
......black
......black and white
......black silver/chrome/nickel
......bronze
......bronze/gold/brass
......canvas giclee
......ceramic/porcelain
......chalkboards
......children
......coastal
......coffee/cocktail tables
......coffee/kitchen/wine
......coffee/wine/kitchen
......contemporary
......contemporary/modern
......decorative arts
......end tables/nightstands/side tables
......ethnic
......ethnic/asian
......floral/botanical
......florals
......florals and botanicals
......french
......glass/chrome
......glass/crystal
......gold/bronze
......hand painted
......hanging candleholders/sconces
......ironwork
......ironwork/scrollwork
......landscape
......long/full-length
......masculine
......modern
......movie/game
......movies/games
......music
......nature
......occasional chairs
......office
......oil reproductions
......ottomans
......oval
......pearl/shell
......people
......photography
......plaques
......rattan
......round
......round mirror
......rustic
......rustic/lodge
......sets
......shell/pearl
......sideboards/consoles
......silver
......silver/chrome/nickel
......special shapes
......square
......starburst
......still lifes
......stone
......storage benches
......tabletop
......theme
......traditional
......traditional/transitional
......transitional
......transitional/traditional
......tuscan-european
......tuscan/european
......tuscan/mediterranean
......urban
......venetian
......wall sculpture
......wood
...hanging candleholders/sconces
......abstract
......animal
......antique bronze
......architectural
......arts and crafts
......asian
......benches
......black
......black and white
......black silver/chrome/nickel
......bronze
......bronze/gold/brass
......canvas giclee
......ceramic/porcelain
......chalkboards
......children
......coastal
......coffee/cocktail tables
......coffee/kitchen/wine
......coffee/wine/kitchen
......contemporary
......contemporary/modern
......decorative arts
......end tables/nightstands/side tables
......ethnic
......ethnic/asian
......floral/botanical
......florals
......florals and botanicals
......french
......glass/chrome
......glass/crystal
......gold/bronze
......hand painted
......hanging candleholders/sconces
......ironwork
......ironwork/scrollwork
......landscape
......long/full-length
......masculine
......modern
......movie/game
......movies/games
......music
......nature
......occasional chairs
......office
......oil reproductions
......ottomans
......oval
......pearl/shell
......people
......photography
......plaques
......rattan
......round
......round mirror
......rustic
......rustic/lodge
......sets
......shell/pearl
......sideboards/consoles
......silver
......silver/chrome/nickel
......special shapes
......square
......starburst
......still lifes
......stone
......storage benches
......tabletop
......theme
......traditional
......traditional/transitional
......transitional
......transitional/traditional
......tuscan-european
......tuscan/european
......tuscan/mediterranean
......urban
......venetian
......wall sculpture
......wood
...ladders
......abstract
......animal
......antique bronze
......architectural
......arts and crafts
......asian
......benches
......black
......black and white
......black silver/chrome/nickel
......bronze
......bronze/gold/brass
......canvas giclee
......ceramic/porcelain
......chalkboards
......children
......coastal
......coffee/cocktail tables
......coffee/kitchen/wine
......coffee/wine/kitchen
......contemporary
......contemporary/modern
......decorative arts
......end tables/nightstands/side tables
......ethnic
......ethnic/asian
......floral/botanical
......florals
......florals and botanicals
......french
......glass/chrome
......glass/crystal
......gold/bronze
......hand painted
......hanging candleholders/sconces
......ironwork
......ironwork/scrollwork
......landscape
......long/full-length
......masculine
......modern
......movie/game
......movies/games
......music
......nature
......occasional chairs
......office
......oil reproductions
......ottomans
......oval
......pearl/shell
......people
......photography
......plaques
......rattan
......round
......round mirror
......rustic
......rustic/lodge
......sets
......shell/pearl
......sideboards/consoles
......silver
......silver/chrome/nickel
......special shapes
......square
......starburst
......still lifes
......stone
......storage benches
......tabletop
......theme
......traditional
......traditional/transitional
......transitional
......transitional/traditional
......tuscan-european
......tuscan/european
......tuscan/mediterranean
......urban
......venetian
......wall sculpture
......wood
...magazine holders
......abstract
......animal
......antique bronze
......architectural
......arts and crafts
......asian
......benches
......black
......black and white
......black silver/chrome/nickel
......bronze
......bronze/gold/brass
......canvas giclee
......ceramic/porcelain
......chalkboards
......children
......coastal
......coffee/cocktail tables
......coffee/kitchen/wine
......coffee/wine/kitchen
......contemporary
......contemporary/modern
......decorative arts
......end tables/nightstands/side tables
......ethnic
......ethnic/asian
......floral/botanical
......florals
......florals and botanicals
......french
......glass/chrome
......glass/crystal
......gold/bronze
......hand painted
......hanging candleholders/sconces
......ironwork
......ironwork/scrollwork

[download]

<etc... rest of the errors snipped>

In reply to Re^2: Printing a tree-view of a hash of hashes by pdxperl
in thread Printing a tree-view of a hash of hashes by pdxperl

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