On Tue, 28 Sep 2021, 'Pascal Jasmin' via Beta wrote:
they are defined as same. +@+ is a verb with or without parentheses.
Yes, but @ @ +@+ is in fact (@ @ +) @ +, which is not the same as @ @ (+@+), so the repl is wrong to remove the parentheses around +@+. ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
