This is the AWB module used as the final step in the list-making for this nomination.

I have not prettified the code. This is how it was when I ran it as part of the list-making described in selection process.

I am an occasional hacker (of 40 years intermittent experience) and not a professional programmer, so the code is crude as hell and as ugly as a very ugly thing. But since it relies on a positive identification, I am confident that any flaws will lead to false negatives, rather than false positives.

It take a portal page, and then:

1. tries to match a call to {{ Transclude list item excerpts as random slideshow}} or {{ Transclude linked excerpts as random slideshow}}
2. If not found, skip the page
3. Convert each run of whitespace characters to a single space
4. Strips everything except the parameters
5. Strips up to 7 named parameters
6. Strips up to 3 empty parameters from the end of the string.
7. Checks whether the remaining text is a single parameter beginning Template:
8. If it is NOT a Template:, skip the page

public string ProcessArticle(string ArticleText, string ArticleTitle, int wikiNamespace, out string Summary, out bool Skip)
{
    Skip = false;
    Summary = "test";

	// string TemplateName = @"(Transclude +list +item +excerpts +as +random +slideshow|Transclude +linked +excerpts +as +random +slideshow)";
    Match tsramatch = Regex.Match(ArticleText, @"\{\{(Transclude +list +item +excerpts +as +random +slideshow|Transclude +linked +excerpts +as +random +slideshow)[^\}]*\}\}", RegexOptions.Singleline);
	
	if (!tsramatch.Success) {
		Skip = true;
		return "no match";
	}
	 //  | paragraphs=1-2 | files=1| Template:Bowerbirds | 
    string tsrcall = Regex.Replace(tsramatch.Value, @"\s+", " ", RegexOptions.Singleline);
	string tsrstripped = Regex.Replace(tsrcall, @"{{(Transclude +list +item +excerpts +as +random +slideshow|Transclude +linked +excerpts +as +random +slideshow)([^}]*)}}", @"$2", RegexOptions.Singleline);
	string tsrnoparams = Regex.Replace(tsrstripped, @"\s*\|[^=\|]+=[^=\|]*\|", "|");
	tsrnoparams = Regex.Replace(tsrnoparams, @"\s*\|[^=\|]+=[^=\|]*\|", "|");
	tsrnoparams = Regex.Replace(tsrnoparams, @"\s*\|[^=\|]+=[^=\|]*\|", "|");
	tsrnoparams = Regex.Replace(tsrnoparams, @"\s*\|[^=\|]+=[^=\|]*\|", "|");
	tsrnoparams = Regex.Replace(tsrnoparams, @"\s*\|[^=\|]+=[^=\|]*\|", "|");
	tsrnoparams = Regex.Replace(tsrnoparams, @"\s*\|[^=\|]+=[^=\|]*\|", "|");
	tsrnoparams = Regex.Replace(tsrnoparams, @"\s*\|[^=\|]+=[^=\|]*\|", "|");
	tsrnoparams = Regex.Replace(tsrnoparams, @"\s*\|\s*$", "");
	tsrnoparams = Regex.Replace(tsrnoparams, @"\s*\|\s*$", "");
	tsrnoparams = Regex.Replace(tsrnoparams, @"\s*\|\s*$", "");
	Match onetemplate = Regex.Match(tsrnoparams, @"^\s*\|\s*Template:[^\|]+$");
	if (!onetemplate.Success) {
		Skip = true;
		return "BAD!!!::::\n tsrstripped = [" + tsrstripped + "]\ntsrnoparams = [" + tsrnoparams + "]\n----\n" + ArticleText;
	}
	// Success
	return "Success: only parameter is [" + tsrnoparams + "]";
}