Hi, > If we keep the ~-expansion, any safe code that use the filesystem API > will have to resort to tricks like > > (operation (if (absolute-pathname? the-path) > the-path > (make-pathname (current-directory) the-path))) > > to guard against input that would cause unintended expansions. In the > end, we'd have just the opposite of convenience (obviously, _if_ you > _remember_ to use the trick to avoid expansions).
Thank you for demonstrating how that kind of API also tends to breed broken workarounds due to cognitive overload. Your code has a potential race condition, as your CWD can be renamed and a different directory placed at the old name in between current-directory and the subsequent pathname resolution performed by operation, so the semantics would differ from a non-expanding operation. Given that there is qs for shell quoting, why not have something similarly short for (partial) shell expansion, so it's reasonably easy for interactive use? Regards, Florian _______________________________________________ Chicken-hackers mailing list Chicken-hackers@nongnu.org https://lists.nongnu.org/mailman/listinfo/chicken-hackers
