.addClass section shows unexpected error message

[anderlaw]

When checking out the jQuery's API document, I found a very confusing message, which is marked in the image below:

I try to figure out why based on the Error Message:ERROR: A single return element is expected, then I found there are two return types String or Array:

 <signature>
    <added>3.3</added>
    <argument name="function" type="Function">
      <desc>A function returning one or more space-separated class names or an array of class names to be added to the existing class name(s). Receives the index position of the element in the set and the existing class name(s) as arguments. Within the function, <code>this</code> refers to the current element in the set.</desc>
      <argument name="index" type="Integer" />
      <argument name="currentClassName" type="String" />
      <return type="String"/>
      <return type="Array"/>
    </argument>
  </signature>

then I try to find out why it didn't support two return types, because it should be, finally located to an npm package named grunt-jquery-content 's entries2html-base.xsl file：
and when I modified the code from

	<!-- a return element -->
	<xsl:if test="return">
		<xsl:for-each select="return">
			<xsl:if test="position() &gt; 1">
				<strong>ERROR: A single return element is expected</strong>
			</xsl:if>
			<xsl:call-template name="render-types"/>
		</xsl:for-each>
	</xsl:if>

to

	<!-- a return element -->
	<xsl:if test="return">
		<xsl:for-each select="return">
			<xsl:if test="position() &gt; 1">
				<span> | </span>
			</xsl:if>
			<xsl:call-template name="render-types"/>
		</xsl:for-each>
	</xsl:if>

the error message missed, and everything includes links works fine:

[mgol]

Nice catch! Interesting, top-level returns work which you can see e.g. on the .val() page, it's just returns in functions passed as arguments that are broken.

Would you like to submit a PR against grunt-jquery-content? You can ping me for a review.

[anderlaw]

thanks for your response, I just made a PR here, thanks

[mgol]

Reopening until we update grunt-jquery-content to a fixed version.