Fixes go-yaml#166 - ability to disable multi line string outputs

encode.go

@@ -388,3 +388,7 @@ func (e *encoder) emitScalar(value, anchor, tag string, style yaml_scalar_style_
 	e.must(yaml_scalar_event_initialize(&e.event, []byte(anchor), []byte(tag), []byte(value), implicit, implicit, style))
 	e.emit()
 }
+
+func (e *encoder) setWidth(width int) {
+	yaml_emitter_set_width(&e.emitter, width)
+}

yaml.go

@@ -220,6 +220,13 @@ func NewEncoder(w io.Writer) *Encoder {
 	}
 }
 
+// SetLineWidth sets the preferred line width.
+// To disable long line breaks set width lower than zero.
+// By default, line width is set to 80.
+func (e *Encoder) SetLineWidth(width int) {
+	e.encoder.setWidth(width)
+}
+
 // Encode writes the YAML encoding of v to the stream.
 // If multiple items are encoded to the stream, the
 // second and subsequent document will be preceded