message: Decorate pasted links so that they look like links
  By default, draftjs will represent pasted `<a>` tags as `LINK` entities, but it doesn't do any default decoration of these links. Add a decorator to do so.
  Most of this was taken from (note the version, v0.8.1).
diff: @@ -16,9 +16,9 @@ limitations under the License.
  import React from 'react';
  import type SyntheticKeyboardEvent from 'react/lib/SyntheticKeyboardEvent';
  -import {Editor, EditorState, RichUtils, CompositeDecorator,
  - convertFromRaw, convertToRaw, Modifier, EditorChangeType,
  - getDefaultKeyBinding, KeyBindingUtil, ContentState, ContentBlock, SelectionState} from 'draft-js';
  +import {Editor, EditorState, RichUtils, CompositeDecorator, Modifier,
  + getDefaultKeyBinding, KeyBindingUtil, ContentState, ContentBlock, SelectionState,
  + Entity} from 'draft-js';
  import classNames from 'classnames';
  import escape from 'lodash/escape';
  @@ -144,15 +144,37 @@ export default class MessageComposerInput extends React.Component {
  this.client = MatrixClientPeg.get();
  }
  + findLinkEntities(contentBlock, callback) {
  + contentBlock.findEntityRanges(
  + (character) => {
  + const entityKey = character.getEntity();
  + return (
  + entityKey !== null &&
  + Entity.get(entityKey).getType() === 'LINK'
  + );
  + }, callback,
  + );
  + }
  /*
  * "Does the right thing" to create an EditorState, based on:
  * - whether we've got rich text mode enabled
  * - contentState was passed in
  */
  createEditorState(richText: boolean, contentState: ?ContentState): EditorState {
  - let decorators = richText ? RichText.getScopedRTDecorators(this.props) :
  - RichText.getScopedMDDecorators(this.props),
  - compositeDecorator = new CompositeDecorator(decorators);
  + const decorators = richText ? RichText.getScopedRTDecorators(this.props) :
  + RichText.getScopedMDDecorators(this.props);
  + decorators.push({
  + strategy: this.findLinkEntities.bind(this),
  + component: (props) => {
  + const {url} = Entity.get(props.entityKey).getData();
  + return (
  + <a href={url}>
  + {props.children}
  + </a>
  + );
  + },
  + });
  + const compositeDecorator = new CompositeDecorator(decorators);
  let editorState = null;
  if (contentState) {
  