return Pattern.quote(s.substring(0, s.length() - 1)) + "$";
        }
        return Pattern.quote(s);
    }

    /**
     * Unescapes double backslashes in regex patterns.
     * Converts escaped backslashes (\\) back to single backslashes (\).
     *
     * @param s the string to unescape
     * @return the unescaped string
     */
    protected String unescape(final String s) {

        super.tearDown();
    }

    private String getTestContent() {
        return "# This is a comment\n" + "test1\n" + "test2\n" + "test3\n" + "\n" + // empty line
                "test\\\\4\n" + // escaped backslash
                "test5\n";
    }

    public void test_getType() {
        assertEquals("protwords", protwordsFile.getType());
    }

    public void test_getPath() {

        monitorTarget.append(buf, "specialKey", supplier);
        assertEquals("\"specialKey\":\"test \\\"quotes\\\" and \\n newline\"", buf.toString());
    }

    // Test append method with String containing backslash
    public void test_append_stringWithBackslash() {
        StringBuilder buf = new StringBuilder();
        Supplier<Object> supplier = () -> "path\\to\\file";

        monitorTarget.append(buf, "pathKey", supplier);

    }

    /**
     * Escapes specific characters in a query string.
     * Replaces each specified character with its escaped version (prefixed with backslash).
     *
     * @param q the query string to escape
     * @param values the characters to escape
     * @return the escaped query string
     */

    }

    public void test_unescape_withBackslash() {
        String content = "word\\n1\n" + // word + n + 1
                "word\\\n"; // word + (nothing after backslash)

        InputStream is = new ByteArrayInputStream(content.getBytes(StandardCharsets.UTF_8));
        stopwordsFile.reload(null, is);

        assertEquals(2, stopwordsFile.stopwordsItemList.size());