From 0ba577c79570435131c5c834d93bde747eba5117 Mon Sep 17 00:00:00 2001
From: Dmitry Volyntsev <xeioex@nginx.com>
Date: Thu, 14 Feb 2019 21:19:51 +0300
Subject: [PATCH] Fixed String.prototype.split() for unicode strings.

This closes #95 issue on Github.
---
 njs/njs_string.c         |  8 ++++----
 njs/test/njs_unit_test.c | 12 ++++++++++++
 2 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/njs/njs_string.c b/njs/njs_string.c
index 8b49d4d5..06b43d7e 100644
--- a/njs/njs_string.c
+++ b/njs/njs_string.c
@@ -2798,8 +2798,8 @@ njs_string_prototype_split(njs_vm_t *vm, njs_value_t *args, nxt_uint_t nargs,
 
                 /* Empty split string. */
                 if (p == next) {
-                    p++;
-                    next++;
+                    p = nxt_utf8_next(p, end);
+                    next = p;
                 }
 
                 size = p - start;
@@ -2845,8 +2845,8 @@ njs_string_prototype_split(njs_vm_t *vm, njs_value_t *args, nxt_uint_t nargs,
 
                 /* Empty split regexp. */
                 if (p == next) {
-                    p++;
-                    next++;
+                    p = nxt_utf8_next(p, end);
+                    next = p;
                 }
 
                 size = p - start;
diff --git a/njs/test/njs_unit_test.c b/njs/test/njs_unit_test.c
index e8b0eb10..2672d85f 100644
--- a/njs/test/njs_unit_test.c
+++ b/njs/test/njs_unit_test.c
@@ -5078,6 +5078,18 @@ static njs_unit_test_t  njs_test[] =
     { nxt_string("'abc'.split('')"),
       nxt_string("a,b,c") },
 
+    { nxt_string("'αβγ'.split('')"),
+      nxt_string("α,β,γ") },
+
+    { nxt_string("'囲碁織'.split('')"),
+      nxt_string("囲,碁,織") },
+
+    { nxt_string("'𝟘𝟙𝟚𝟛'.split('')"),
+      nxt_string("𝟘,𝟙,𝟚,𝟛") },
+
+    { nxt_string("'囲α碁α織'.split('α')"),
+      nxt_string("囲,碁,織") },
+
     { nxt_string("'abc'.split('abc')"),
       nxt_string(",") },
 
-- 
2.47.3