Make :escape_attrs accessible from the command line.

doc-src/HAML_CHANGELOG.md

@@ -12,6 +12,7 @@
   that allows attributes to either remain unescaped
   (for things like embedding PHP directives in Haml)
   or to be always escaped rather than `#escape_once`d.
+  This can also be used from the command line via `--no-escape-attrs`.
 
 ### Backwards Incompatibilities -- Must Read!
 

lib/haml/exec.rb

@@ -212,6 +212,11 @@ END
           @options[:for_engine][:escape_html] = true
         end
 
+        opts.on('--no-escape-attrs',
+                "Don't escape HTML characters (like ampersands and angle brackets) in attributes.") do
+          @options[:for_engine][:escape_attrs] = false
+        end
+
         opts.on('-q', '--double-quote-attributes',
                 'Set attribute wrapper to double-quotes (default is single).') do
           @options[:for_engine][:attr_wrapper] = '"'