structex 0.6.0

A structural regular expression engine
Documentation 
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-- name --
top level extract
-- se --
x/\w+/
-- haystack --
This is a test.
-- matches --
This
is
a
test

-----

-- name --
top level split
-- se --
y/ /
-- haystack --
This is a test.
-- matches --
This
is
a
test.\n

-----

-- name --
top level narrow
-- se --
n/\w+ \w+/
-- haystack --
This is a test.
-- matches --
This is

-----

-- name --
extract with guard
-- se --
x/(.|\n)*?\./ g/Alice/
-- haystack --
This is a multi-line string that mentions peoples names. People like Alice
and Bob. People like Claire and David, but really we're here to talk about
Alice. Alice is everyone's friend.
-- matches --
 People like Alice\nand Bob.
 People like Claire and David, but really we're here to talk about\nAlice.
 Alice is everyone's friend.

-----

-- name --
extract with guard then narrow
-- se --
x/(.|\n)*?\./ g/Alice/ n/\w+\./
-- haystack --
This is a multi-line string that mentions peoples names. People like Alice
and Bob. People like Claire and David, but really we're here to talk about
Alice. Alice is everyone's friend.
-- matches --
Bob.
Alice.
friend.

-----

-- name --
extract with inv guard
-- se --
x/(.|\n)*?\./ v/Alice/
-- haystack --
This is a multi-line string that mentions peoples names. People like Alice
and Bob. People like Claire and David, but really we're here to talk about
Alice. Alice is everyone's friend.
-- matches --
This is a multi-line string that mentions peoples names.

-----

-- name --
extract with inv guard then narrow
-- se --
x/(.|\n)*?\./ v/Alice/ n/\w+\./
-- haystack --
This is a multi-line string that mentions peoples names. People like Alice
and Bob. People like Claire and David, but really we're here to talk about
Alice. Alice is everyone's friend.
-- matches --
names.

-----

-- name --
chained narrow
-- se --
n/\w.*\./ n/\w+\./ n/\w+/
-- haystack --
     this should match foo.
-- matches --
foo

-----

-- name --
chained extract
-- se --
x/.+?\./ x/\w+ \w+/ x/\w{2}/
-- haystack --
a    b. foo bar. this that.
-- matches --
fo
ba
th
is
th
at

-----

-- name --
chained split
-- se --
y/\n/ y/:/
-- haystack --
foo:bar
a:b
1:2
-- matches --
foo
bar
a
b
1
2

-----

-- name --
parallel with guards
-- se --
x/(.|\n)*?\./ {
  g/Alice/ n/\w+\./;
  v/Alice/ n/\w+/;
}
-- haystack --
This is a multi-line string that mentions peoples names. People like Alice
and Bob. People like Claire and David, but really we're here to talk about
Alice. Alice is everyone's friend.
-- matches --
This
Bob.
Alice.
friend.