I think it would be useful to have some sort of feedback in the search result page if a search used RE or not.
Background reasoning:
I made a little script(Py) that turns a saved html-search-result page into a wiki-table. To potentially post it on request of other users.
Although there are some general ways to identify RE related search strings. It unfortunately can't be made full-proof.
One reason to need to know if it was a RE search, is to be able to fix the highlighted text in the search result. (As "replace Text"'s highlighting has a tendency to not be there. Wich seems related to having a linebreak in the matched string.)
Note: Practically its not needed to have this RE-tag displayed at the result page. If its just some hidden tag in the saved html result page it would do the job too.
Waves at @Kghbln. Your "ray of sunshine" here. Which you blocked from SMW github, and at the same time from SMW-wiki (including the wiki personal page) ... without any warning or any time limit. I guess general blocking rules don't apply to those that are above approach (nothing new under the sun of course, giving current world affairs).