update additional .sh writers to consider partials_extension

Author: DannyBen

lib/bashly/commands/add.rb

@@ -34,8 +34,11 @@ class Add < Base
       command 'comp', 'Generate a bash completions script or function.'
       command 'config', 'Add standard functions for handling INI files to the lib directory.'
       command 'help', 'Add a help command, in addition to the standard --help flag.'
-      command 'lib', 'Create the additional lib directory for additional user scripts. All *.sh scripts in this ' \
-        'folder will be included in the final bash script.'
+      command 'lib', <<~USAGE
+        Create the lib directory for any additional user scripts.
+        All *.sh scripts in this directory will be included in the final bash script.
+        Note that if you configured a differetc partials_extension, then the extensions of the files in this directory need to match.
+      USAGE
 
       command 'settings', 'Copy a sample settings.yml file to your project, allowing you to customize some ' \
         'bashly options.'

lib/bashly/libraries/help.rb

@@ -6,7 +6,7 @@ class Help < Base
       def files
         [
           {
-            path:    "#{Settings.source_dir}/help_command.sh",
+            path:    "#{Settings.source_dir}/help_command.#{Settings.partials_extension}",
             content: help_command,
           },
         ]

lib/bashly/script/wrapper.rb

@@ -49,7 +49,7 @@ def body
       end
 
       def custom_header_path
-        @custom_header_path ||= "#{Settings.source_dir}/header.sh"
+        @custom_header_path ||= "#{Settings.source_dir}/header.#{Settings.partials_extension}"
       end
     end
   end