Dear Maintainer, Running `apt search '?installed ?not(?automatic)'` results in the following message: "Error: Regex compilation error". Using the same search terms in aptitude `aptitude search '?installed ?not(?automatic)'` works as expected. Konomi
Control: retitle -1 search does not support patterns Yes this is well known, the apt search command specifically can only do text search, you are looking for the apt list command. There's some limitations to actually allow search to take patterns, as it currently builds a regular expression vector and then runs them over the descriptions, hence why there's no patterns yet.