# HG changeset patch
# User Bram Moolenaar <bram@vim.org>
# Date 1378408544 -7200
# Node ID c514693882b9f1c7be2e76a0307926df799da3ea
# Parent  f4b96a5d4a22b8988540e94f6daffc2d34f69596
updated for version 7.4.021
Problem:    NFA regexp: Using \ze in one branch which doesn't match may cause
	    end of another branch to be wrong. (William Fugh)
Solution:   Set end position if it wasn't set yet.

diff --git a/src/regexp_nfa.c b/src/regexp_nfa.c
--- a/src/regexp_nfa.c
+++ b/src/regexp_nfa.c
@@ -4209,10 +4209,11 @@ skip_add:
 	    break;
 
 	case NFA_MCLOSE:
-	    if (nfa_has_zend)
+	    if (nfa_has_zend && (REG_MULTI
+			? subs->norm.list.multi[0].end.lnum >= 0
+			: subs->norm.list.line[0].end != NULL))
 	    {
-		/* Do not overwrite the position set by \ze. If no \ze
-		 * encountered end will be set in nfa_regtry(). */
+		/* Do not overwrite the position set by \ze. */
 		subs = addstate(l, state->out, subs, pim, off);
 		break;
 	    }
diff --git a/src/testdir/test64.in b/src/testdir/test64.in
--- a/src/testdir/test64.in
+++ b/src/testdir/test64.in
@@ -328,6 +328,7 @@ STARTTEST
 :call add(tl, [2, 'abc \zsmatch\ze abc', 'abc abc abc match abc abc', 'match'])
 :call add(tl, [2, '\v(a \zsif .*){2}', 'a if then a if last', 'if last', 'a if last'])
 :call add(tl, [2, '\>\zs.', 'aword. ', '.'])
+:call add(tl, [2, '\s\+\ze\[/\|\s\zs\s\+', 'is   [a t', '  '])
 :"
 :"""" Tests for \@= and \& features
 :call add(tl, [2, 'abc\@=', 'abc', 'ab'])
diff --git a/src/testdir/test64.ok b/src/testdir/test64.ok
--- a/src/testdir/test64.ok
+++ b/src/testdir/test64.ok
@@ -752,6 +752,9 @@ OK 2 - \v(a \zsif .*){2}
 OK 0 - \>\zs.
 OK 1 - \>\zs.
 OK 2 - \>\zs.
+OK 0 - \s\+\ze\[/\|\s\zs\s\+
+OK 1 - \s\+\ze\[/\|\s\zs\s\+
+OK 2 - \s\+\ze\[/\|\s\zs\s\+
 OK 0 - abc\@=
 OK 1 - abc\@=
 OK 2 - abc\@=
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -739,6 +739,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    21,
+/**/
     20,
 /**/
     19,