Fix printing tables with borders and indentation

When printing tables with borders and indentation the resulting markup
was incorrect:

Before:
```
  +------  +--------  +-------+
|   Name | Number | Color |
|   Erik |      1 | green |
  +------  +--------  +-------+
```

After
```
  +------+--------+-------+
  | Name | Number | Color |
  | Erik |      1 | green |
  +------+--------+-------+
```

lib/thor/shell/table_printer.rb

@@ -36,7 +36,7 @@ def print(array)
 
           sentence = truncate(sentence)
           sentence << "|" if options[:borders]
-          stdout.puts sentence
+          stdout.puts indentation + sentence
 
         end
         print_border_separator if options[:borders]
@@ -66,7 +66,6 @@ def prepare(array)
           end
         end
 
-        @formats[0] = @formats[0].insert(0, " " * @indent)
         @formats << "%s"
       end
 
@@ -95,10 +94,10 @@ def format_cell(column, row_size, index)
       end
 
       def print_border_separator
-        top = @maximas.map do |maxima|
-          " " * @indent + "+" + "-" * (maxima + 2 * @padding)
+        separator = @maximas.map do |maxima|
+            "+" + "-" * (maxima + 2 * @padding)
         end
-        stdout.puts top.join + "+"
+        stdout.puts indentation + separator.join + "+"
       end
 
       def truncate(string)
@@ -108,11 +107,15 @@ def truncate(string)
           if chars.length <= @truncate
             chars.join
           else
-            chars[0, @truncate - 3].join + "..."
+            chars[0, @truncate - 3 - @indent].join + "..."
           end
         end
       end
 
+      def indentation
+        " " * @indent
+      end
+
       if "".respond_to?(:encode)
         def as_unicode
           yield

spec/shell/basic_spec.rb

@@ -468,6 +468,20 @@ def  #456  Lanç...
 | Name | Number | Color |
 | Erik |      1 | green |
 +------+--------+-------+
+TABLE
+    end
+
+    it "prints a table with borders and small numbers and right-aligns them" do
+      table = [
+        ["Name", "Number", "Color"], # rubocop: disable Style/WordArray
+        ["Erik", 1, "green"]
+      ]
+      content = capture(:stdout) { shell.print_table(table, borders: true, indent: 2) }
+      expect(content).to eq(<<-TABLE)
+  +------+--------+-------+
+  | Name | Number | Color |
+  | Erik |      1 | green |
+  +------+--------+-------+
 TABLE
     end
   end