[musicxml2ly] breath mark inside beam

[Andre Soares]

> I'm not top posting.
Hello!
I have this example file.xml:
<score-partwise>
    <part-list>
        <score-part id="1"/>
    </part-list>
    <part id="1">
        <measure>
            <note>
                <pitch>
                    <step>C</step>
                    <octave>4</octave>
                </pitch>
                <duration>2</duration>
                <beam>begin</beam>
            </note>
            <note>
                <pitch>
                    <step>E</step>
                    <octave>4</octave>
                </pitch>
                <duration>2</duration>
                <beam>end</beam>
                <notations>
                    <articulations>
                        <breath-mark/>
                    </articulations>
                </notations>
            </note>
        </measure>
    </part>
</score-partwise>


When i run "musicxml2ly file.xml" i got file.ly with something like this:
% file.ly begin
\version "2.18.0"
...
c2 [ e2 \breathe ]
...
% file.ly end


Notice that "\breathe" is before "]" causing an error when I run "lilypond 
file.ly":
teste.ly:14:22: error: syntax error, unexpected EVENT_IDENTIFIER
    c2 [ e2 \breathe 
                     ] }

Sorry for the long report. It was the tinyest example i could build.
I'm just willing to help lilypond community, which I love!