Replace my own implementation with simpler strtok()

src/main.c

@@ -56,34 +56,23 @@ sigint(int signal)
 int
 tokenize(char *input)
 {
-        char curr, prev = '\n';
+        char whitespaces[] = " \t\n";
         char **tokens = g_tokens;
-        char *start = g_args;
         char *args = g_args;
-        int real_input = 0;
+        char *token;
+        size_t len;
         int argc = 0;
 
-        while ((curr = *input++) != '\0')
+        token = strtok(input, whitespaces);
+        while (token != NULL)
         {
-                if (curr == ' ' || curr == '\n')
-                {
-                        if (curr == prev || !real_input)
-                                continue;
-
-                        *tokens++ = start;
-                        *args++ = '\0';
-                        start = args;
+                len = strlen(token) + 1;
+                memcpy(args, token, len);
+                *tokens++ = args;
+                args += len + 1;
                 argc++;
 
-                        if (curr == '\n')
-                                break;
-                } else
-                {
-                        *args++ = curr;
-                        real_input = 1;
-                }
-
-                prev = curr;
+                token = strtok(NULL, whitespaces);
         }
 
         tokens = NULL;