In the Advanced Search form, people should be able to search with insource.
Ideally we would want to allow people to write
in the "Source code contains" field, without having to know anything more about search
Currently, you can use insource: either with a regex, or with text . If you use the text version, it ignores all grey space, i.e. it only considers letters and numbers, all other characters are ignored. This means, that is is not possible to search specifically for parts of the wikitext syntax, such as commentary or a link that started in a specific way.
Find out why that is so.