From a3cf7a6dfb57925c7d16901a45f3e037c17ba9b2 Mon Sep 17 00:00:00 2001
From: kohnish <kohnish@gmx.com>
Date: Thu, 17 Aug 2023 21:10:51 +0200
Subject: [PATCH] grep breaking on non-ascii

---
 native/app/json_msg_handler.c  |  5 ++++-
 native/app/test-vim9-fuzzy.cxx | 27 ++++++++++++++++++++++++++-
 2 files changed, 30 insertions(+), 2 deletions(-)

diff --git a/native/app/json_msg_handler.c b/native/app/json_msg_handler.c
index 819d847..aa8a672 100644
--- a/native/app/json_msg_handler.c
+++ b/native/app/json_msg_handler.c
@@ -23,7 +23,10 @@ char *json_escape(const char *json, size_t len, size_t *result_len) {
     char *buf = malloc(len * 2);
     size_t counter = 0;
     for (size_t i = 0; i < len; i++) {
-        if (json[i] == '\n') {
+        // only ascii is supported
+        if ((json[i] & 192) >= 192) {
+            continue;
+        } else if (json[i] == '\n') {
             buf[counter] = '\\';
             buf[++counter] = 'n';
         } else if (json[i] == '\r') {
diff --git a/native/app/test-vim9-fuzzy.cxx b/native/app/test-vim9-fuzzy.cxx
index f4545a2..c47026d 100644
--- a/native/app/test-vim9-fuzzy.cxx
+++ b/native/app/test-vim9-fuzzy.cxx
@@ -3,5 +3,30 @@
 #include "search_helper.h"
 #include "vim9_fuzzy_env.h"
 #include <gtest/gtest.h>
+#include <string>
 
-TEST(fuzzy, start_fuzzy_response) {}
+
+// const std::string g_test_str = std::string("aあiい");
+const char *s = "aあiい";
+// 2 bytes: 110xxxxx 10xxxxxx
+// 192
+// 3 bytes: 1110xxxx 10xxxxxx 10xxxxxx
+// 4 bytes: 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
+
+TEST(fuzzy, start_fuzzy_response) {
+    if ((s[1] & 192) >= 192) {
+        printf("two bytes\n");
+    }
+    if ((s[1] & 224) >= 224) {
+        printf("three bytes\n");
+    }
+    if ((s[1] & 240) >= 240) {
+        printf("four bytes \n");
+    }
+    // printf("%02X\n", g_test_str.c_str()[0]);
+    // printf("%02X\n", g_test_str.c_str()[1]);
+    // printf("%02X\n", g_test_str.c_str()[2]);
+    // printf("%02X\n", g_test_str.c_str()[3]);
+    // printf("%02X\n", g_test_str.c_str()[4]);
+    // printf("%02X\n", g_test_str.c_str()[5]);
+}