void
c_save(char *file) {
        FILE *f = fopen(file + 2, "w");
        if(f == NULL) { puts("couldnt open file."); return; }
        Row *row = buffer;
        while (1) {
                for(int i = 0; i < ROW_SIZE; i++) {
                        if (row->text[i] == '\0' || row->text[i] == '\n')
                                break;
                        fwrite(&row->text[i], 1, 1, f);
                }
                fwrite("\n", 1, 1, f);
                if (row->n == NULL) break;
                row = row->n;
        }
}