A summary of options is included below.
-ex
Specifies "x", rather than backslash, to be the escape
char for metachars. If x is "-", no escape char is used
and arguments containing metachars are surrounded by
quotes instead.
-ox
Specifies "x", rather than double-quote, to be the open
quote character, which is used if the -e- option is
specified.
-cx
Specifies "x" to be the close quote character.
-pn
Specifies "n" to be the open quote character, as an
integer.
-dn
Specifies "n" to be the close quote character, as an
integer.
-mx
Specifies "x" to be a metachar. By default, no characters
are considered metachars.
-nn
Specifies "n" to be a metachar, as an integer.
-fn
Specifies "n" to be the escape char for metachars, as an
integer.
-a
Specifies that all arguments are to be quoted. The
default is that only arguments containing metacharacters
are quoted.