Minor tweaks to handling of removing settings

This commit makes some minor changes to how we handle removing
settings.  In particular, it updates all of the line numbers
of the various 'section' objects to correspond to the new
state of the world based on the removal of a line that appeared
before them.

Also adds one more test related to setting removal.

1 files changed, 23 insertions, 3 deletions

diff --git a/lib/puppet/util/ini_file.rb b/lib/puppet/util/ini_file.rb
index 107924d..52ad32c 100644
--- a/lib/puppet/util/ini_file.rb
+++ b/lib/puppet/util/ini_file.rb
@@ -45,8 +45,19 @@ module Util
     def remove_setting(section_name, setting)
       section = @sections_hash[section_name]
       if (section.has_existing_setting?(setting))
+        # If the setting is found, we have some work to do.
+        # First, we remove the line from our array of lines:
         remove_line(section, setting)
+
+        # Then, we need to tell the setting object to remove
+        # the setting from its state:
         section.remove_existing_setting(setting)
+
+        # Finally, we need to update all of the start/end line
+        # numbers for all of the sections *after* the one that
+        # was modified.
+        section_index = @section_names.index(section_name)
+        decrement_section_line_numbers(section_index + 1)
       end
     end
 
@@ -61,9 +72,7 @@ module Util
             fh.puts("\n[#{section.name}]")
           elsif ! section.end_line.nil?
             (section.start_line..section.end_line).each do |line_num|
-              if lines[line_num]
-                fh.puts(lines[line_num])
-              end
+              fh.puts(lines[line_num])
             end
           end
 
@@ -153,6 +162,17 @@ module Util
         File.readlines(path)
     end
 
+
+    # Utility method; given a section index (index into the @section_names
+    # array), decrement the start/end line numbers for that section and all
+    # all of the other sections that appear *after* the specified section.
+    def decrement_section_line_numbers(section_index)
+      @section_names[section_index..(@section_names.length - 1)].each do |name|
+        section = @sections_hash[name]
+        section.decrement_line_nums
+      end
+    end
+
   end
 end
 end