When searching for example SWI-Prolog code I typically search the GitHub SWI-Prolog repositories.
At times I will then extend the search to all GitHub repositories knowing that the chance of finding what I need and being well written code is less likely.
However I know the SWI-Prolog packs often contain useful code that is well written but the only way I know to search the code is to do it by hand or install the pack then search the directory. While I am starting to think I will have to install the packs to search them, before taking that path it is wise to seek the answer to this question.
Is there a simple way to search the code in the various SWI-Prolog packs with out first installing them?