diff --git a/src/testdir/test53.in b/src/testdir/test53.in
index cc333c7..be76b05 100644
--- a/src/testdir/test53.in
+++ b/src/testdir/test53.in
@@ -34,7 +34,13 @@
 gnd
 /[a]bcdx
 :1
-2gnd
+2gnd/join
+/$
+0gnd
+/\>\zs
+0gnd/^
+gnd$h/\zs
+gnd
 :/^start:/,/^end:/wq! test.out
 ENDTEST
 
@@ -57,4 +63,8 @@
 one
 two
 abcdx | abcdx | abcdx
+join 
+lines
+zero width pattern
+delete first and last chars
 end:
diff --git a/src/testdir/test53.ok b/src/testdir/test53.ok
index 4f1e5a6..928caff 100644
--- a/src/testdir/test53.ok
+++ b/src/testdir/test53.ok
@@ -21,4 +21,7 @@
 SEARCH:
 searchmatch
 abcdx |  | abcdx
+join lines
+zerowidth pattern
+elete first and last char
 end:
diff --git a/src/testdir/test55.in b/src/testdir/test55.in
index cf85f57..f255e33 100644
--- a/src/testdir/test55.in
+++ b/src/testdir/test55.in
Binary files differ
diff --git a/src/testdir/test55.ok b/src/testdir/test55.ok
index fde085c..7375007 100644
--- a/src/testdir/test55.ok
+++ b/src/testdir/test55.ok
@@ -115,3 +115,9 @@
 {'a': {'b': 'B'}}
 Vim(call):E737: a
 {'a': {'b': 'B'}}
+Vim(foldopen):E490:
+
+
+Error detected while processing :
+E492: Not an editor command: foobar|catch|let a = matchstr(v:exception,'^[^ ]*')|endtry
+
diff --git a/src/version.c b/src/version.c
index 70bcc99..f30551b 100644
--- a/src/version.c
+++ b/src/version.c
@@ -720,6 +720,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    645,
+/**/
     644,
 /**/
     643,