module POSIXShell:sig..end
val split : string -> string listsplit s: the string s is interpreted as command line
arguments and splitted into its components (un-escaped). For
example split "a \"b c\" d" = ["a"; "b c"; "d"]. Note that
split "" = []. It is possible that substitutions such as "$a"
(resp. "$(a b)") may be transformed into "${a}" (resp. "${a b}").
val escape : string -> stringescape s quote s if needed to protect spaces, '"' and '\''
so it reads as a single argument in a POSIX shell command, the
content of which is identical to s (interpreted with OCaml
conventions). If quoted, the returned string will start and end
with '"'. The original string s is returned if no quoting is
necessary.
val unescape : string -> stringunescape s returns a string s' removing all backslashes
preceding a char.