Fix git processing (#337)

Fix regression in 1.3.x where git status handling was broken.

.rubocop.yml

@@ -42,7 +42,7 @@ Metrics/BlockLength:
   Exclude:
     - 'spec/**/*'
 
-Metrics/LineLength:
+Layout/LineLength:
   Max: 120
 
 Metrics/ModuleLength:

lib/colorls/core.rb

@@ -248,12 +248,14 @@ def git_dir_info(path)
       modes = if path == '.'
                 Set.new(@git_status.values).flatten
               else
-                @git_status.fetch(path, nil)
+                @git_status[path]
               end
 
-      return Git.colored_status_symbols(modes, @colors) unless modes.nil?
-
-      '    '
+      if modes.empty? && Dir.empty?(File.join(@input, path))
+        '    '
+      else
+        Git.colored_status_symbols(modes, @colors)
+      end
     end
 
     def long_info(content)

lib/colorls/git.rb

@@ -51,7 +51,7 @@ def git_prefix(repo_path)
       end
 
       def git_subdir_status(repo_path)
-        IO.popen(['git', '-C', repo_path, 'status', '--porcelain', '-z', '-unormal', '--ignored', '.'])
+        yield IO.popen(['git', '-C', repo_path, 'status', '--porcelain', '-z', '-unormal', '--ignored', '.'])
       end
     end
   end