diff --git a/requesturi/bytes_tolerant_test.go b/requesturi/bytes_tolerant_test.go
new file mode 100644
index 0000000..84060a6
--- /dev/null
+++ b/requesturi/bytes_tolerant_test.go
@@ -0,0 +1,493 @@
+package requesturi_test
+
+import (
+	"testing"
+
+	"bytes"
+
+	"sourcecode.social/reiver/go-rfc2616/requesturi"
+)
+
+func TestBytesTolerant(t *testing.T) {
+
+	tests := []struct{
+		Value []byte
+		ExpectedResult []byte
+		ExpectedRest []byte
+		ExpectedOK bool
+	}{
+		{
+			Value: nil,
+			ExpectedResult: nil,
+			ExpectedRest: nil,
+			ExpectedOK: false,
+		},
+		{
+			Value: []byte(nil),
+			ExpectedResult: nil,
+			ExpectedRest: nil,
+			ExpectedOK: false,
+		},
+
+
+
+		{
+			Value: []byte{},
+			ExpectedResult: nil,
+			ExpectedRest: nil,
+			ExpectedOK: false,
+		},
+		{
+			Value: []byte(""),
+			ExpectedResult: nil,
+			ExpectedRest: nil,
+			ExpectedOK: false,
+		},
+
+
+
+		{
+			Value:        []byte(" "),
+			ExpectedResult: nil,
+			ExpectedRest: []byte(" "),
+			ExpectedOK: false,
+		},
+		{
+			Value:        []byte("\t"),
+			ExpectedResult: nil,
+			ExpectedRest: []byte("\t"),
+			ExpectedOK: false,
+		},
+		{
+			Value:        []byte("\r"),
+			ExpectedResult: nil,
+			ExpectedRest: []byte("\r"),
+			ExpectedOK: false,
+		},
+		{
+			Value: []byte("\n"),
+			ExpectedResult: nil,
+			ExpectedRest: []byte("\n"),
+			ExpectedOK: false,
+		},
+
+
+
+		{
+			Value:          []byte("/"),
+			ExpectedResult: []byte("/"),
+			ExpectedRest: nil,
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("/one/two/three/four.php"),
+			ExpectedResult: []byte("/one/two/three/four.php"),
+			ExpectedRest: nil,
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("/once/twice/thrice/fource.php?apple=1&banana=2.0&cherry=three"),
+			ExpectedResult: []byte("/once/twice/thrice/fource.php?apple=1&banana=2.0&cherry=three"),
+			ExpectedRest: nil,
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("http://example.com/"),
+			ExpectedResult: []byte("http://example.com/"),
+			ExpectedRest: nil,
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("https://example.com/.well-known/webfinger?resource=acct:joeblow@example.com"),
+			ExpectedResult: []byte("https://example.com/.well-known/webfinger?resource=acct:joeblow@example.com"),
+			ExpectedRest: nil,
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("urn:sha1:3I42H3S6NNFQ2MSVX7XZKYAYSCX5QBYJ"),
+			ExpectedResult: []byte("urn:sha1:3I42H3S6NNFQ2MSVX7XZKYAYSCX5QBYJ"),
+			ExpectedRest: nil,
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("joeblow@example.com"),
+			ExpectedResult: []byte("joeblow@example.com"),
+			ExpectedRest: nil,
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("acct:joeblow@example.com"),
+			ExpectedResult: []byte("acct:joeblow@example.com"),
+			ExpectedRest: nil,
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("joeblow@example.com/the/path.md"),
+			ExpectedResult: []byte("joeblow@example.com/the/path.md"),
+			ExpectedRest: nil,
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("^joeblow@example.com/this/is/the/way.html"),
+			ExpectedResult: []byte("^joeblow@example.com/this/is/the/way.html"),
+			ExpectedRest: nil,
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte(`()<>@,;:\"/[]?={}`),
+			ExpectedResult: []byte(`()<>@,;:\"/[]?={}`),
+			ExpectedRest: nil,
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("😈"),
+			ExpectedResult: []byte(`😈`),
+			ExpectedRest: nil,
+			ExpectedOK: true,
+		},
+
+
+
+		{
+			Value:          []byte("/ "),
+			ExpectedResult: []byte("/"),
+			ExpectedRest:          []byte(" "),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("/one/two/three/four.php "),
+			ExpectedResult: []byte("/one/two/three/four.php"),
+			ExpectedRest:         []byte(" "),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("/once/twice/thrice/fource.php?apple=1&banana=2.0&cherry=three "),
+			ExpectedResult: []byte("/once/twice/thrice/fource.php?apple=1&banana=2.0&cherry=three"),
+			ExpectedRest:      []byte(" "),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("http://example.com/ "),
+			ExpectedResult: []byte("http://example.com/"),
+			ExpectedRest:       []byte(" "),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("https://example.com/.well-known/webfinger?resource=acct:joeblow@example.com "),
+			ExpectedResult: []byte("https://example.com/.well-known/webfinger?resource=acct:joeblow@example.com"),
+			ExpectedRest:        []byte(" "),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("urn:sha1:3I42H3S6NNFQ2MSVX7XZKYAYSCX5QBYJ "),
+			ExpectedResult: []byte("urn:sha1:3I42H3S6NNFQ2MSVX7XZKYAYSCX5QBYJ"),
+			ExpectedRest:       []byte(" "),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("joeblow@example.com "),
+			ExpectedResult: []byte("joeblow@example.com"),
+			ExpectedRest:      []byte(" "),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("acct:joeblow@example.com "),
+			ExpectedResult: []byte("acct:joeblow@example.com"),
+			ExpectedRest:        []byte(" "),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("joeblow@example.com/the/path.md "),
+			ExpectedResult: []byte("joeblow@example.com/the/path.md"),
+			ExpectedRest:       []byte(" "),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("^joeblow@example.com/this/is/the/way.html "),
+			ExpectedResult: []byte("^joeblow@example.com/this/is/the/way.html"),
+			ExpectedRest:     []byte(" "),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte(`()<>@,;:\"/[]?={} `),
+			ExpectedResult: []byte(`()<>@,;:\"/[]?={}`),
+			ExpectedRest:                    []byte(` `),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("😈 "),
+			ExpectedResult: []byte(`😈`),
+			ExpectedRest:     []byte(" "),
+			ExpectedOK: true,
+		},
+
+
+
+		{
+			Value:          []byte("/\t"),
+			ExpectedResult: []byte("/"),
+			ExpectedRest:          []byte("\t"),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("/one/two/three/four.php\t"),
+			ExpectedResult: []byte("/one/two/three/four.php"),
+			ExpectedRest:         []byte("\t"),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("/once/twice/thrice/fource.php?apple=1&banana=2.0&cherry=three\t"),
+			ExpectedResult: []byte("/once/twice/thrice/fource.php?apple=1&banana=2.0&cherry=three"),
+			ExpectedRest:      []byte("\t"),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("http://example.com/\t"),
+			ExpectedResult: []byte("http://example.com/"),
+			ExpectedRest:       []byte("\t"),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("https://example.com/.well-known/webfinger?resource=acct:joeblow@example.com\t"),
+			ExpectedResult: []byte("https://example.com/.well-known/webfinger?resource=acct:joeblow@example.com"),
+			ExpectedRest:        []byte("\t"),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("urn:sha1:3I42H3S6NNFQ2MSVX7XZKYAYSCX5QBYJ\t"),
+			ExpectedResult: []byte("urn:sha1:3I42H3S6NNFQ2MSVX7XZKYAYSCX5QBYJ"),
+			ExpectedRest:       []byte("\t"),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("joeblow@example.com\t"),
+			ExpectedResult: []byte("joeblow@example.com"),
+			ExpectedRest:      []byte("\t"),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("acct:joeblow@example.com\t"),
+			ExpectedResult: []byte("acct:joeblow@example.com"),
+			ExpectedRest:        []byte("\t"),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("joeblow@example.com/the/path.md\t"),
+			ExpectedResult: []byte("joeblow@example.com/the/path.md"),
+			ExpectedRest:       []byte("\t"),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("^joeblow@example.com/this/is/the/way.html\t"),
+			ExpectedResult: []byte("^joeblow@example.com/this/is/the/way.html"),
+			ExpectedRest:     []byte("\t"),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte(`()<>@,;:\"/[]?={} `),
+			ExpectedResult: []byte(`()<>@,;:\"/[]?={}`),
+			ExpectedRest:                    []byte(` `),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("😈\t"),
+			ExpectedResult: []byte(`😈`),
+			ExpectedRest:     []byte("\t"),
+			ExpectedOK: true,
+		},
+
+
+
+		{
+			Value:          []byte("/\r"),
+			ExpectedResult: []byte("/"),
+			ExpectedRest:          []byte("\r"),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("/one/two/three/four.php\r"),
+			ExpectedResult: []byte("/one/two/three/four.php"),
+			ExpectedRest:         []byte("\r"),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("/once/twice/thrice/fource.php?apple=1&banana=2.0&cherry=three\r"),
+			ExpectedResult: []byte("/once/twice/thrice/fource.php?apple=1&banana=2.0&cherry=three"),
+			ExpectedRest:      []byte("\r"),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("http://example.com/\r"),
+			ExpectedResult: []byte("http://example.com/"),
+			ExpectedRest:       []byte("\r"),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("https://example.com/.well-known/webfinger?resource=acct:joeblow@example.com\r"),
+			ExpectedResult: []byte("https://example.com/.well-known/webfinger?resource=acct:joeblow@example.com"),
+			ExpectedRest:        []byte("\r"),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("urn:sha1:3I42H3S6NNFQ2MSVX7XZKYAYSCX5QBYJ\r"),
+			ExpectedResult: []byte("urn:sha1:3I42H3S6NNFQ2MSVX7XZKYAYSCX5QBYJ"),
+			ExpectedRest:       []byte("\r"),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("joeblow@example.com\r"),
+			ExpectedResult: []byte("joeblow@example.com"),
+			ExpectedRest:      []byte("\r"),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("acct:joeblow@example.com\r"),
+			ExpectedResult: []byte("acct:joeblow@example.com"),
+			ExpectedRest:        []byte("\r"),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("joeblow@example.com/the/path.md\r"),
+			ExpectedResult: []byte("joeblow@example.com/the/path.md"),
+			ExpectedRest:       []byte("\r"),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("^joeblow@example.com/this/is/the/way.html\r"),
+			ExpectedResult: []byte("^joeblow@example.com/this/is/the/way.html"),
+			ExpectedRest:     []byte("\r"),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte(`()<>@,;:\"/[]?={} `),
+			ExpectedResult: []byte(`()<>@,;:\"/[]?={}`),
+			ExpectedRest:                    []byte(` `),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("😈\r"),
+			ExpectedResult: []byte(`😈`),
+			ExpectedRest:     []byte("\r"),
+			ExpectedOK: true,
+		},
+
+
+
+		{
+			Value:          []byte("/\n"),
+			ExpectedResult: []byte("/"),
+			ExpectedRest:          []byte("\n"),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("/one/two/three/four.php\n"),
+			ExpectedResult: []byte("/one/two/three/four.php"),
+			ExpectedRest:         []byte("\n"),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("/once/twice/thrice/fource.php?apple=1&banana=2.0&cherry=three\n"),
+			ExpectedResult: []byte("/once/twice/thrice/fource.php?apple=1&banana=2.0&cherry=three"),
+			ExpectedRest:      []byte("\n"),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("http://example.com/\n"),
+			ExpectedResult: []byte("http://example.com/"),
+			ExpectedRest:       []byte("\n"),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("https://example.com/.well-known/webfinger?resource=acct:joeblow@example.com\n"),
+			ExpectedResult: []byte("https://example.com/.well-known/webfinger?resource=acct:joeblow@example.com"),
+			ExpectedRest:        []byte("\n"),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("urn:sha1:3I42H3S6NNFQ2MSVX7XZKYAYSCX5QBYJ\n"),
+			ExpectedResult: []byte("urn:sha1:3I42H3S6NNFQ2MSVX7XZKYAYSCX5QBYJ"),
+			ExpectedRest:       []byte("\n"),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("joeblow@example.com\n"),
+			ExpectedResult: []byte("joeblow@example.com"),
+			ExpectedRest:      []byte("\n"),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("acct:joeblow@example.com\n"),
+			ExpectedResult: []byte("acct:joeblow@example.com"),
+			ExpectedRest:        []byte("\n"),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("joeblow@example.com/the/path.md\n"),
+			ExpectedResult: []byte("joeblow@example.com/the/path.md"),
+			ExpectedRest:       []byte("\n"),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("^joeblow@example.com/this/is/the/way.html\n"),
+			ExpectedResult: []byte("^joeblow@example.com/this/is/the/way.html"),
+			ExpectedRest:     []byte("\n"),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte(`()<>@,;:\"/[]?={} `),
+			ExpectedResult: []byte(`()<>@,;:\"/[]?={}`),
+			ExpectedRest:                    []byte(` `),
+			ExpectedOK: true,
+		},
+		{
+			Value:          []byte("😈\n"),
+			ExpectedResult: []byte(`😈`),
+			ExpectedRest:     []byte("\n"),
+			ExpectedOK: true,
+		},
+	}
+
+	for testNumber, test := range tests {
+
+		actualResult, actualRest, actualOK := requesturi.BytesTolerant(test.Value)
+
+		{
+			expected := test.ExpectedOK
+			actual   := actualOK
+
+			if expected != actual {
+				t.Errorf("For test #%d, the actual ok-result is not what was expected." , testNumber)
+				t.Logf("EXPECTED: %t", expected)
+				t.Logf("ACTUAL:   %t", actual)
+				t.Logf("VALUE: %q (%#v)", test.Value, test.Value)
+				continue
+			}
+		}
+
+		{
+			expected := test.ExpectedResult
+			actual   := actualResult
+
+			if !bytes.Equal(expected, actual) {
+				t.Errorf("For test #%d, the actual result is not what was expected." , testNumber)
+				t.Logf("EXPECTED: %q (%#v)", expected, expected)
+				t.Logf("ACTUAL:   %q (%#v)", actual, actual)
+				t.Logf("VALUE: %q (%#v)", test.Value, test.Value)
+				continue
+			}
+		}
+
+		{
+			expected := test.ExpectedRest
+			actual   := actualRest
+
+			if !bytes.Equal(expected, actual) {
+				t.Errorf("For test #%d, the actual rest is not what was expected." , testNumber)
+				t.Logf("EXPECTED: %q (%#v)", expected, expected)
+				t.Logf("ACTUAL:   %q (%#v)", actual, actual)
+				t.Logf("VALUE: %q (%#v)", test.Value, test.Value)
+				continue
+			}
+		}
+	}
+}