Support MusicXML sample tutorial-percussion (#4)

README.md

@@ -11,13 +11,17 @@ MusicXML to MuseScore converter and back.
 - `npm run --silent convert:mscx /path/to/score.musicxml instrumentsFile=/path/to/MuseScore/share/instruments/instruments.xml styleFile=/path/to/MuseScore/stylesheet.mss`
 
 # Examples
-Screenshot of a score converted with a specialized stylesheet file.
+Screenshot of an official MusicXML example converted to MuseScore format. There are subtle differences from what MuseScore itself would import from MusicXML.
+
+![Screenshot of an official MusicXML example converted to MuseScore format.](https://github.com/infojunkie/musicxml-mscx/blob/main/doc/screenshots/tutorial-percussion.png?raw=true)
 
-![Screenshot of a score converted with a specialized stylesheet file.](https://github.com/infojunkie/musicxml-mscx/blob/main/9-20-special.png?raw=true)
+Screenshot of a Lilypond test snippet with microtonal accidentals. Not shown are the note tunings that are converted correctly and that MuseScore would miss when it imports the MusicXML.
 
-Screenshot of a score with accidentals, including microtonal accidentals.
+![Screenshot of a Lilypond test snippet with microtonal accidentals.](https://github.com/infojunkie/musicxml-mscx/blob/main/doc/screenshots/01f-Pitches-ParenthesizedMicrotoneAccidentals.png?raw=true)
+
+Screenshot of a score converted with a specialized stylesheet file.
 
-![Screenshot of a score with accidentals, including microtonal accidentals.](https://github.com/infojunkie/musicxml-mscx/blob/main/01f-Pitches-ParenthesizedMicrotoneAccidentals.png?raw=true)
+![Screenshot of a score converted with a specialized stylesheet file.](https://github.com/infojunkie/musicxml-mscx/blob/main/doc/screenshots/9-20-special.png?raw=true)
 
 # Theory of operation
 Why write a new converter between MusicXML and MuseScore, when MuseScore itself already does 2-way conversion?

package.json

@@ -1,6 +1,6 @@
 {
   "name": "musicxml-mscx",
-  "version": "0.3.1",
+  "version": "0.4.0",
   "description": "MuseScore to MusicXML converter and back.",
   "author": "Karim Ratib <[email protected]> (https://github.com/infojunkie)",
   "license": "GPL-3.0-only",

src/libmusicxml.xsl

@@ -113,6 +113,14 @@
     <xsl:accumulator-rule match="sound[@coda]" select="@coda"/>
   </xsl:accumulator>
 
+  <!--
+    State: Current measure repeat mode.
+  -->
+  <xsl:accumulator name="measureRepeat" as="element()*" initial-value="()">
+    <xsl:accumulator-rule match="measure/attributes/measure-style/measure-repeat[@type = 'start']" select="."/>
+    <xsl:accumulator-rule match="measure/attributes/measure-style/measure-repeat[@type = 'stop']" select="()"/>
+  </xsl:accumulator>
+
   <!--
     State: Map of measure number to index.
   -->