updated for version 7.4.036

Problem:    NFA engine does not capture group correctly when using \@>. (ZyX)
Solution:   Copy submatches before doing the recursive match.

src/testdir/test64.in

@@ -430,6 +430,7 @@ STARTTEST
 :call add(tl, [2, '\(a*\)\@>a', 'aaaa'])
 :call add(tl, [2, '\(a*\)\@>b', 'aaab', 'aaab', 'aaa'])
 :call add(tl, [2, '^\(.\{-}b\)\@>.', '  abcbd', '  abc', '  ab'])
+:call add(tl, [2, '\(.\{-}\)\(\)\@>$', 'abc', 'abc', 'abc', ''])
 :" TODO: BT engine does not restore submatch after failure
 :call add(tl, [1, '\(a*\)\@>a\|a\+', 'aaaa', 'aaaa'])
 :"

src/testdir/test64.ok

@@ -992,6 +992,9 @@ OK 2 - \(a*\)\@>b
 OK 0 - ^\(.\{-}b\)\@>.
 OK 1 - ^\(.\{-}b\)\@>.
 OK 2 - ^\(.\{-}b\)\@>.
+OK 0 - \(.\{-}\)\(\)\@>$
+OK 1 - \(.\{-}\)\(\)\@>$
+OK 2 - \(.\{-}\)\(\)\@>$
 OK 0 - \(a*\)\@>a\|a\+
 OK 2 - \(a*\)\@>a\|a\+
 OK 0 - \_[^8-9]\+