}
        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) {
        return s.replace("\\\\", "\\");
    }

    /**

                        inputs[i] = unescape(inputStrings.get(i)).trim();
                    }

                    final List<String> outputStrings = split(sides.get(1), ",");
                    outputs = new String[outputStrings.size()];
                    for (int i = 0; i < outputs.length; i++) {
                        outputs[i] = unescape(outputStrings.get(i)).trim();
                    }

        assertEquals(16, hash.length);
    }

    // Test unescape method
    @ParameterizedTest
    @CsvSource({ "'test%20string', 'test string'", "'test%25string', 'test%string'", "'test', 'test'", "'' , ''" })
    void testUnescape(String input, String expected) throws Exception {
        assertEquals(expected, NtlmPasswordAuthentication.unescape(input));
    }

                    }
                    continue; // ignore empty lines and comments
                }

                final String inputStrings = line;
                final String input = unescape(inputStrings);

                if (input.length() > 0) {
                    id++;
                    final ProtwordsItem item = new ProtwordsItem(id, input);
                    if (updater != null) {

                    }
                    continue; // ignore empty lines and comments
                }

                final String inputStrings = line;
                final String input = unescape(inputStrings);

                if (input.length() > 0) {
                    id++;
                    final StopwordsItem item = new StopwordsItem(id, input);
                    if (updater != null) {

});
```

### Text Processing and JSON
```java
import org.codelibs.core.text.*;

// JSON utilities with proper escaping
String escaped = JsonUtil.escape("Hello \"World\" with special chars");
String unescaped = JsonUtil.unescape(escaped);

// Text tokenization
Tokenizer tokenizer = new Tokenizer("field1,field2,field3", ",");
while (tokenizer.hasMoreTokens()) {
    String token = tokenizer.nextToken();

        String dom = null, user = null, pass = null;
        if (userInfo != null) {
            try {
                userInfo = unescape(userInfo);
            } catch (UnsupportedEncodingException uee) {
                throw new RuntimeCIFSException(uee);
            }
            int i, u;
            int end = userInfo.length();

     */
    public NtlmPasswordAuthentication(String userInfo) {
        domain = username = password = null;

        if (userInfo != null) {
            try {
                userInfo = unescape(userInfo);
            } catch (final UnsupportedEncodingException uee) {}
            int i, u, end;
            char c;

            end = userInfo.length();
            for (i = 0, u = 0; i < end; i++) {

        assertTrue(result.contains("StopwordsFile"));
        assertTrue(result.contains("path=" + testFile.getAbsolutePath()));
        assertTrue(result.contains("id=test_id"));
    }

    // Test unescape private method through reload
    public void test_unescape_noBackslash() {
        String content = "word1\n";
        InputStream is = new ByteArrayInputStream(content.getBytes(StandardCharsets.UTF_8));

    assertEquals("string%20with%20spaces", basicEscaper.escape("string with spaces"));
    assertEquals("string+with+spaces", plusForSpaceEscaper.escape("string with spaces"));
    assertEquals("string with spaces", spaceEscaper.escape("string with spaces"));
  }

  /** Tests that if we add extra 'safe' characters they remain unescaped */
  public void testCustomEscaper() {