Functions "ls", "dir", "listfiles", "findfiles" ... are Buggy, Redundant, Wrongly Documented

[rdbyk]

• buggy cf. here
• help page(s) state: "Patterns are given to the Unix ls or to the Windows dir commands in order to get information about files.", which is not true ...
• redundancy; do we really need four "different" functions? We need just one, which is powerful and works correctly ... a proper implementation could be based on POSIX C functions glob wordexp, fnmatch ...