diff --git a/readlfcr.go b/readlfcr.go
new file mode 100644
index 0000000..ae3adf1
--- /dev/null
+++ b/readlfcr.go
@@ -0,0 +1,50 @@
+package eol
+
+import (
+	"io"
+
+	"sourcecode.social/reiver/go-opt"
+
+	"sourcecode.social/reiver/go-eol/cr"
+	"sourcecode.social/reiver/go-eol/lf"
+	"sourcecode.social/reiver/go-eol/lfcr"
+)
+
+// ReadLFCR tries to read the "\r\n" (i.e., carriage-return line-feed) end-of-line sequence.
+//
+// If successful, it returns the number-of-bytes read (to read in end-of-line sequence "\r\n").
+//
+// If the first character read is not a '\n', then ReadLFCR will try to unread the character.
+// If the second character read is not a '\r', then ReadLFCR will also try to unread the second character, but will not be able to unread the first character (i.e., '\n') it already read.
+//
+// Example usage:
+//
+//	size, err := eol.ReadLFCR(runescanner)
+func ReadLFCR(runescanner io.RuneScanner) (size int, err error) {
+
+	var size0 int
+	{
+		var err error
+
+		const characterNumber uint64 = 1
+		var circumstance internalCircumstance = specifyCircumstance(opt.Something(lfcr.String), characterNumber)
+		size0, err = readthisrune(circumstance, runescanner, lf.Rune)
+		if nil != err {
+			return size0, err
+		}
+	}
+
+	var size1 int
+	{
+		var err error
+
+		const characterNumber uint64 = 2
+		var circumstance internalCircumstance = specifyCircumstance(opt.Something(lfcr.String), characterNumber)
+		size1, err = readthisrune(circumstance, runescanner, cr.Rune)
+		if nil != err {
+			return size1+size0, err
+		}
+	}
+
+	return size1+size0, nil
+}
diff --git a/readlfcr_test.go b/readlfcr_test.go
new file mode 100644
index 0000000..f1fba2c
--- /dev/null
+++ b/readlfcr_test.go
@@ -0,0 +1,215 @@
+package eol_test
+
+import (
+	"testing"
+
+	"io"
+	"strings"
+
+	"sourcecode.social/reiver/go-utf8"
+
+	"sourcecode.social/reiver/go-eol"
+)
+
+func TestReadLFCR(t *testing.T) {
+
+	tests := []struct{
+		Value string
+		ExpectedSize int
+	}{
+		{
+			Value: "\n\r",
+			ExpectedSize: 2,
+		},
+
+
+
+		{
+			Value: "\n\rapple banana cherry",
+			ExpectedSize: 2,
+		},
+	}
+
+	for testNumber, test := range tests {
+
+		var reader io.Reader = strings.NewReader(test.Value)
+		var runescanner io.RuneScanner = utf8.NewRuneScanner(reader)
+
+		actualSize, err := eol.ReadLFCR(runescanner)
+		if nil != err {
+			t.Errorf("For test #%d, did not expect an error but actually got one.", testNumber)
+			t.Logf("ERROR: (%T) %s", err, err)
+			t.Logf("VALUE: %q", test.Value)
+			continue
+		}
+
+		{
+			expected := test.ExpectedSize
+			actual   := actualSize
+
+			if expected != actual {
+				t.Errorf("For test #%d, the actual size is not what was expected.", testNumber)
+				t.Logf("EXPECTED: %d", expected)
+				t.Logf("ACTUAL:   %d", actual)
+				t.Logf("VALUE: %q", test.Value)
+				continue
+			}
+		}
+
+	}
+}
+
+func TestReadLFCR_fail(t *testing.T) {
+
+	tests := []struct{
+		Value string
+		ExpectedError string
+		ExpectedSize int
+	}{
+		{
+			Value: "",
+			ExpectedError: `eol: problem reading character №1 of end-of-line sequence "\n\r": EOF`,
+		},
+
+
+
+		{
+			Value: "\r",
+			ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found for end-of-line sequence "\n\r" character №1 — instead found '\r' (U+000D)`,
+		},
+		{
+			Value: "\n",
+			ExpectedError: `eol: problem reading character №2 of end-of-line sequence "\n\r": EOF`,
+			ExpectedSize: 1,
+		},
+		{
+			Value: "\u0085",
+			ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found for end-of-line sequence "\n\r" character №1 — instead found '\u0085' (U+0085)`,
+		},
+		{
+			Value: "\u2028",
+			ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found for end-of-line sequence "\n\r" character №1 — instead found '\u2028' (U+2028)`,
+		},
+
+
+
+		{
+			Value: "😈",
+			ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found for end-of-line sequence "\n\r" character №1 — instead found '😈' (U+1F608)`,
+		},
+
+
+
+		{
+			Value: "\rapple banana cherry",
+			ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found for end-of-line sequence "\n\r" character №1 — instead found '\r' (U+000D)`,
+		},
+		{
+			Value: "\u0085apple banana cherry",
+			ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found for end-of-line sequence "\n\r" character №1 — instead found '\u0085' (U+0085)`,
+		},
+		{
+			Value: "\u2028apple banana cherry",
+			ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found for end-of-line sequence "\n\r" character №1 — instead found '\u2028' (U+2028)`,
+		},
+
+
+
+		{
+			Value: "😈apple banana cherry",
+			ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found for end-of-line sequence "\n\r" character №1 — instead found '😈' (U+1F608)`,
+		},
+
+
+
+		{
+			Value: " \r",
+			ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found for end-of-line sequence "\n\r" character №1 — instead found ' ' (U+0020)`,
+		},
+		{
+			Value: " \n",
+			ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found for end-of-line sequence "\n\r" character №1 — instead found ' ' (U+0020)`,
+		},
+		{
+			Value: " \u0085",
+			ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found for end-of-line sequence "\n\r" character №1 — instead found ' ' (U+0020)`,
+		},
+		{
+			Value: " \u2028",
+			ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found for end-of-line sequence "\n\r" character №1 — instead found ' ' (U+0020)`,
+		},
+
+
+
+		{
+			Value: " 😈",
+			ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found for end-of-line sequence "\n\r" character №1 — instead found ' ' (U+0020)`,
+		},
+
+
+
+		{
+			Value: ".\n",
+			ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found for end-of-line sequence "\n\r" character №1 — instead found '.' (U+002E)`,
+		},
+		{
+			Value: ".\r",
+			ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found for end-of-line sequence "\n\r" character №1 — instead found '.' (U+002E)`,
+		},
+		{
+			Value: ".\u0085",
+			ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found for end-of-line sequence "\n\r" character №1 — instead found '.' (U+002E)`,
+		},
+		{
+			Value: ".\u2028",
+			ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found for end-of-line sequence "\n\r" character №1 — instead found '.' (U+002E)`,
+		},
+
+
+
+		{
+			Value: ".😈",
+			ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found for end-of-line sequence "\n\r" character №1 — instead found '.' (U+002E)`,
+		},
+	}
+
+	for testNumber, test := range tests {
+
+		var reader io.Reader = strings.NewReader(test.Value)
+		var runescanner io.RuneScanner = utf8.NewRuneScanner(reader)
+
+		actualSize, err := eol.ReadLFCR(runescanner)
+		if nil == err {
+			t.Errorf("For test #%d, expected an error but did not actually get one.", testNumber)
+			t.Logf("EXPECTED-ERROR: %q", test.ExpectedError)
+			t.Logf("VALUE: %q", test.Value)
+			continue
+		}
+
+		{
+			expected := test.ExpectedError
+			actual   := err.Error()
+
+			if expected != actual {
+				t.Errorf("For test #%d, the actual error is not what was expected.", testNumber)
+				t.Logf("EXPECTED: %q", expected)
+				t.Logf("ACTUAL:   %q", actual)
+				t.Logf("VALUE: %q", test.Value)
+				continue
+			}
+		}
+
+		{
+			expected := test.ExpectedSize
+			actual   := actualSize
+
+			if expected != actual {
+				t.Errorf("For test #%d, the actual size is not what was expected.", testNumber)
+				t.Logf("EXPECTED: %d", expected)
+				t.Logf("ACTUAL:   %d", actual)
+				t.Logf("VALUE: %q", test.Value)
+				continue
+			}
+		}
+	}
+}