{unescaped: "exists", escaped: "exists"},
		{unescaped: "exists_one", escaped: "exists_one"},
		{unescaped: "filter", escaped: "filter"},
		{unescaped: "size", escaped: "size"},
		{unescaped: "contains", escaped: "contains"},
		{unescaped: "startsWith", escaped: "startsWith"},
		{unescaped: "endsWith", escaped: "endsWith"},
		{unescaped: "matches", escaped: "matches"},
		{unescaped: "duration", escaped: "duration"},

	}{
		{
			"/a", // this pattern matches a path that unescapes to "/a"
			[]string{"/a", "/%61"},
			[]string{"/a", "/%61"},
		},
		{
			"/%62", // patterns are unescaped by segment; matches paths that unescape to "/b"
			[]string{"/b", "/%62"},
			[]string{"/%2562"}, // In 1.21, patterns were not unescaped but paths were.
		},
		{

// and therefore which escaped quote character is permitted.
// If set to a single quote, it permits the sequence \' and disallows unescaped '.
// If set to a double quote, it permits \" and disallows unescaped ".
// If set to zero, it does not permit either escape and allows both quote characters to appear unescaped.

import javax.annotation.CheckForNull;

/**
 * A {@code UnicodeEscaper} that escapes some set of Java characters using a UTF-8 based percent
 * encoding scheme. The set of safe characters (those which remain unescaped) can be specified on
 * construction.
 *
 * <p>This class is primarily used for creating URI escapers in {@link UrlEscapers} but can be used

import javax.annotation.CheckForNull;

/**
 * A {@code UnicodeEscaper} that escapes some set of Java characters using a UTF-8 based percent
 * encoding scheme. The set of safe characters (those which remain unescaped) can be specified on
 * construction.
 *
 * <p>This class is primarily used for creating URI escapers in {@link UrlEscapers} but can be used

        }
        if (escaped.length > 0) {
          System.arraycopy(escaped, 0, dest, destIndex, escaped.length);
          destIndex += escaped.length;
        }
        // If we dealt with an escaped character, reset the unescaped range.
        unescapedChunkStart = nextIndex;
      }
      index = nextEscapeIndex(s, nextIndex, end);
    }

    // Process trailing unescaped characters - no need to account for escaped

        }
        if (escaped.length > 0) {
          System.arraycopy(escaped, 0, dest, destIndex, escaped.length);
          destIndex += escaped.length;
        }
        // If we dealt with an escaped character, reset the unescaped range.
        unescapedChunkStart = nextIndex;
      }
      index = nextEscapeIndex(s, nextIndex, end);
    }

    // Process trailing unescaped characters - no need to account for escaped

	}

}

var escapeBenchmarks = []struct {
	unescaped string
	query     string
	path      string
}{
	{
		unescaped: "one two",
		query:     "one+two",
		path:      "one%20two",
	},
	{
		unescaped: "Фотки собак",
		query:     "%D0%A4%D0%BE%D1%82%D0%BA%D0%B8+%D1%81%D0%BE%D0%B1%D0%B0%D0%BA",

line comments.
"""

        then:
        output == "\nHere is a \nstring\n\nwith interspersed \nline comments."
    }

    def "can cope with multiple unescaped and escaped \\r characters"() {
        when:
        input = "Here \r\r\\\r\\\r${BN}\\\r\\\r\\\r\\\r."
        then:
        output == "Here \n\n\\\n\\\n\\\n\\\n\\\n\\\n."
    }

	f.Add([]byte(`${FOO}`))
	f.Add([]byte(`\${FOO}`))
	f.Add([]byte(`$(/bin/false)`))
	f.Add([]byte(`\$(/bin/false)`))
	f.Add([]byte(`$((0))`))
	f.Add([]byte(`\$((0))`))
	f.Add([]byte(`unescaped space`))
	f.Add([]byte(`escaped\ space`))
	f.Add([]byte(`"unterminated quote`))
	f.Add([]byte(`'unterminated quote`))
	f.Add([]byte(`unterminated escape\`))
	f.Add([]byte(`"quote with unterminated escape\`))