enforceLtrInHtml method

String enforceLtrInHtml (String html)

Enforce the html snippet in LTR directionality regardless of overall context. If the html piece was enclosed by a tag, the direction will be applied to existing tag, otherwise a span tag will be added as wrapper. For this reason, if html snippet start with with tag, this tag must enclose the whole piece. If the tag already has a direction specified, this new one will override existing one in behavior (tested on FF and IE).

Implementation 

static String enforceLtrInHtml(String html) =>
    _enforceInHtmlHelper(html, 'ltr');