msvcrt: Add support for quoted paths in _searchenv.

dlls/msvcrt/dir.c

@@ -1683,12 +1683,27 @@ void CDECL MSVCRT__searchenv(const char* file, const char* env, char *buf)
   for(; *penv; penv = (*end ? end + 1 : end))
   {
     end = penv;
-    while(*end && *end != ';') end++; /* Find end of next path */
-    path_len = end - penv;
+    path_len = 0;
+    while(*end && *end != ';' && path_len < MAX_PATH)
+    {
+        if (*end == '"')
+        {
+            end++;
+            while(*end && *end != '"' && path_len < MAX_PATH)
+            {
+                path[path_len++] = *end;
+                end++;
+            }
+            if (*end == '"') end++;
+            continue;
+        }
+
+        path[path_len++] = *end;
+        end++;
+    }
     if (!path_len || path_len >= MAX_PATH)
       continue;
 
-    memcpy(path, penv, path_len);
     if (path[path_len - 1] != '/' && path[path_len - 1] != '\\')
       path[path_len++] = '\\';
     if (path_len + fname_len >= MAX_PATH)

dlls/msvcrt/tests/dir.c

@@ -597,6 +597,20 @@ static void test_searchenv(void)
         ok(!strcmp(result, exp), "got %s, expected '%s'\n", result, exp);
     }
 
+    strcpy(env1, "TEST_PATH=");
+    strcat(env1, tmppath);
+    strcat(env1, "\"\\search_env_test\\\"d\"i\"r\"1");
+    putenv(env1);
+    strcpy(exp, tmppath);
+    strcat(exp, files[0]);
+    _searchenv("1.dat", "TEST_PATH", result);
+    ok(!strcmp(result, exp), "got %s, expected '%s'\n", result, exp);
+
+    strcat(env1, ";");
+    putenv(env1);
+    _searchenv("1.dat", "TEST_PATH", result);
+    ok(!result[0], "got %s, expected ''\n", result);
+
     putenv("TEST_PATH=");
 
     for (i=ARRAY_SIZE(files)-1; i>=0; i--) {