onTextInput not triggered on tab

[martinklepsch]

quoting @bantic

This can probably be fixed simply by removing the special-handling of tab in the keydown handler here https://github.com/bustlelabs/mobiledoc-kit/blob/master/src/js/editor/event-manager.js#L142

[miguelcobain]

@bantic I believe the same is happening with line breaks.
If we use the usual handler to linkify, it doesn't run if you type enter after the link.

    editor.onTextInput({
      name: 'linkify',
      match: /\b(https?:\/\/[^\s]+)\s$/,
      run(editor, matches) {
        let url = matches[0];
        // the editor's current range is the cursor position, 1
        // character after the URL (to account for the space).
        // Keep a reference to this range so that it can be restored later
        let currentRange = editor.range;
        // 1. Create a logical range containing the URL.
        // Move the range 1 space backward (to skip over the space), and
        // then extend it backward the length of the URL:
        let linkRange = currentRange.move(-1).extend(-url.length);
        // 2. Create the markup
        let linkMarkup = editor.builder.createMarkup('a', { href: url });
        // 3. apply the markup to the range
        editor.run((postEditor) => {
          postEditor.addMarkupToRange(linkRange, linkMarkup);
        });
        // 4. restore the cursor position
        editor.selectRange(currentRange);
      }
    });

Since we're using \s on the regex, it should match the newline.