Fix python multiline EOF error (#309)

ini_test.go

@@ -1562,3 +1562,26 @@ func TestPythonMultiline(t *testing.T) {
 		testData.Value3,
 	)
 }
+
+func TestPythonMultiline_EOF(t *testing.T) {
+	if runtime.GOOS == "windows" {
+		t.Skip("Skipping testing on Windows")
+	}
+
+	path := filepath.Join("testdata", "multiline_eof.ini")
+	f, err := LoadSources(LoadOptions{
+		AllowPythonMultilineValues: true,
+		ReaderBufferSize:           64 * 1024,
+	}, path)
+	require.NoError(t, err)
+	require.NotNil(t, f)
+	assert.Len(t, f.Sections(), 1)
+
+	defaultSection := f.Section("")
+	assert.NotNil(t, f.Section(""))
+
+	var testData testData
+	err = defaultSection.MapTo(&testData)
+	require.NoError(t, err)
+	assert.Equal(t, "some text here\n\tsome more text here 2", testData.Value1)
+}

parser.go

@@ -304,12 +304,7 @@ func (p *parser) readPythonMultilines(line string, bufferSize int) (string, erro
 
 	for {
 		peekData, peekErr := peekBuffer.ReadBytes('\n')
-		if peekErr != nil {
-			if peekErr == io.EOF {
-				p.debug("readPythonMultilines: io.EOF, peekData: %q, line: %q", string(peekData), line)
-				return line, nil
-			}
-
+		if peekErr != nil && peekErr != io.EOF {
 			p.debug("readPythonMultilines: failed to peek with error: %v", peekErr)
 			return "", peekErr
 		}

testdata/multiline_eof.ini

@@ -0,0 +1,2 @@
+value1 = some text here
+	some more text here 2