Considering the following:
>> flarp: "[some stuff]"
== "[some stuff]"
>> parse flarp [thru "[" copy bletch to "]" (print bletch)]
some stuff
== false
just pulls out some text between delimiters, as does
>> flarp: "[some]"
== "[some]"
>> parse flarp [thru "[" copy bletch to "]" (print bletch)]
some
== false
quite nicely. BUT, notice that
>> flarp: "[]"
== "[]"
>> parse flarp [thru "[" copy bletch to "]" (print bletch)]
none
== false
does NOT fetch the expected (at least by me) zero-length string,
but rather sets bletch to none!!!! This seems to violate the
principle that "you can get back out what you put in", as in
>> sanity-check: func [s /local t u] [
[ t: join "[" [s "]"]
[ parse t [thru "[" copy u to "]" (print (s = u))]
[ u
[ ]
>> sanity-check "HELLO"
true
== "HELLO"
>> sanity-check "HEY"
true
== "HEY"
>> sanity-check "?"
true
== "?"
>> sanity-check ""
false
== none
-jn-
