Extend the enter-on-empty-line behavior to work with any format with …

…'inherit: true'

src/modules/keyboard.coffee

@@ -67,22 +67,29 @@ class Keyboard
       [line, offset] = @quill.editor.doc.findLineAt(range.start)
       [leaf, offset] = line.findLeafAt(offset)
       delta = new Delta().retain(range.start)
-
-      # if on an empty line formatted as a list, remove the format
-      if range.isCollapsed() and line.length == 1 and (line.formats.bullet or line.formats.list)
-        delta.retain(1, { list: false, bullet: false })
+      removeInheritedFormats = _.reduce(line.formats, (formats, value, name) =>
+        format = @quill.editor.doc.formats[name]
+        if format and format.isType('line') and format.config.inherit
+          formats[name] = false
+        return formats
+      , {})
+      removeNonInheritedFormats = _.reduce(line.formats, (formats, value, name) =>
+        format = @quill.editor.doc.formats[name]
+        if format and format.isType('line') and !format.config.inherit
+          formats[name] = false
+        return formats
+      , {})
+
+      # if on an empty line, remove the inheritable formats
+      if range.isCollapsed() and line.length == 1 and Object.keys(removeInheritedFormats).length > 0
+        delta.retain(1, removeInheritedFormats)
       else
         delta.insert('\n', line.formats).delete(range.end - range.start)
 
       # if creating a new empty line (was at the end of the old line),
       # remove line formats from the new line that should not be inherited
       if !leaf.next and offset == leaf.length
-        delta.retain(1, _.reduce(line.formats, (formats, value, name) =>
-          format = @quill.editor.doc.formats[name]
-          if format and format.isType('line') and !format.config.inherit
-            formats[name] = false
-          return formats
-        , {}))
+        delta.retain(1, removeNonInheritedFormats)
 
       @quill.updateContents(delta, Quill.sources.USER)
       _.each(leaf.formats, (value, format) =>