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) {

				}
				args = append(args, arg)
				acceptArg = false
			default:
				in.Error("bad definition for macro:", name)
			}
		}
	}
	var tokens []Token
	// Scan to newline. Backslashes escape newlines.
	for tok != '\n' {
		if tok == scanner.EOF {
			in.Error("missing newline in definition for macro:", name)
		}
		if tok == '\\' {
			tok = in.Stack.Next()
			if tok != '\n' && tok != '\\' {

            // This demonstrates the cross-platform path behavior:
            // - On Unix systems, paths use forward slashes (/)
            // - On Windows systems, paths use backslashes (\)
            // - The actual file system being used determines the separator
            String actualLocation = location.getSource().getLocation();

        assertFalse(CharUtil.isUrlChar('<')); // less than
        assertFalse(CharUtil.isUrlChar('>')); // greater than
        assertFalse(CharUtil.isUrlChar('"')); // double quote
        assertFalse(CharUtil.isUrlChar('\\')); // backslash
        assertFalse(CharUtil.isUrlChar('`')); // backtick
    }

    public void test_isUrlChar_controlCharacters() {
        // Test control characters
        assertFalse(CharUtil.isUrlChar('\u0000')); // null

</p>

<p>
Several backslash escapes allow arbitrary values to be encoded as
ASCII text.  There are four ways to represent the integer value
as a numeric constant: <code>\x</code> followed by exactly two hexadecimal
digits; <code>\u</code> followed by exactly four hexadecimal digits;
<code>\U</code> followed by exactly eight hexadecimal digits, and a
plain backslash <code>\</code> followed by exactly three octal digits.

)

if defined MAVEN_DEBUG_SCRIPT (
  echo [DEBUG] Final JVM_CONFIG_MAVEN_OPTS: %JVM_CONFIG_MAVEN_OPTS%
)

:endReadJvmConfig

@REM do not let MAVEN_PROJECTBASEDIR end with a single backslash which would escape the double quote. This happens when .mvn at drive root.
if "_%MAVEN_PROJECTBASEDIR:~-1%"=="_\" set "MAVEN_PROJECTBASEDIR=%MAVEN_PROJECTBASEDIR%\"

    /**
     * Escapes special characters in an LDAP search filter to prevent LDAP injection attacks.
     *
     * <p>This method escapes the following characters as per RFC 4515:
     * <ul>
     * <li>\ (backslash) → \5c</li>
     * <li>* (asterisk) → \2a</li>
     * <li>( (left parenthesis) → \28</li>
     * <li>) (right parenthesis) → \29</li>
     * <li>\0 (null character) → \00</li>
     * </ul>
     *