It is probably better to encode : characters as <dot> in MEI conversions. Example:

**mens data:
**mens
*clefC3
S:f
Sc
s:d
se
*-
If they are an augmentation dot, then probably adding P or p is best, and maybe :: would indicate an explicit dot of division (to be decided later). Rhythmic augmentation dots could be encoded as note@dots as currently, but they would not be displayed. But probably better to encode them as note@dots.ges. See issue rism-digital/verovio#757 related to this (note@dots.ges are not yet implemented).
If in circle mensuration, then the first dot above would function like an augmentation dot, and the second like a dot of division. So an explicit expression of the rhythm might be:
**mens
*met(O)
*clefC3
Sp:f
Sic
si:d
se
*-
The p would force a visual dot when converting to modern notation, and the i would suppress the dot in conversion to modern notation.
A problem is that the meaning of the dots depends on the mensuration. If the mensuration is changed, an augmentation dot might become a dot of division and vice-versa.
MEI conversion (develop-humdrum branch):
verovio -atmei input.mens
<?xml version="1.0" encoding="UTF-8"?>
<?xml-model href="http://music-encoding.org/schema/4.0.0/mei-all.rng" type="application/xml" schematypens="http://relaxng.org/ns/structure/1.0"?>
<?xml-model href="http://music-encoding.org/schema/4.0.0/mei-all.rng" type="application/xml" schematypens="http://purl.oclc.org/dsdl/schematron"?>
<mei xmlns="http://www.music-encoding.org/ns/mei" meiversion="4.0.0">
<meiHead>
<fileDesc>
<titleStmt>
<title />
</titleStmt>
<pubStmt />
</fileDesc>
<encodingDesc>
<appInfo>
<application isodate="2018-05-05T17:25:21" version="2.0.0-dev-686bba6-dirty">
<name>Verovio</name>
<p>Transcoded from Humdrum</p>
</application>
</appInfo>
</encodingDesc>
<workDesc>
<work>
<titleStmt>
<title />
</titleStmt>
</work>
</workDesc>
</meiHead>
<music>
<body>
<mdiv xml:id="mdiv-0000000704839692">
<score xml:id="score-0000000720906592">
<scoreDef xml:id="scoredef-0000000825967700" midi.bpm="400">
<staffGrp xml:id="staffgrp-0000001910231784">
<staffDef xml:id="staffdef-0000001223009082" clef.shape="C" clef.line="3" n="1" notationtype="mensural" lines="5">
<label xml:id="label-0000002033952917" />
</staffDef>
</staffGrp>
</scoreDef>
<section xml:id="section-0000000174355370">
<measure xml:id="measure-L1" right="invis" n="0">
<staff xml:id="staff-0000000225858390" n="1">
<layer xml:id="layer-L1F1N1" n="1">
<note xml:id="note-L3F1" dots="1" dur="brevis" oct="4" pname="f" accid.ges="n" />
<dot xml:id="dot-0000000793533560" />
<note xml:id="note-L4F1" dur="brevis" oct="4" pname="c" accid.ges="n" />
<note xml:id="note-L5F1" dots="1" dur="semibrevis" oct="4" pname="d" accid.ges="n" />
<dot xml:id="dot-0000001191947546" />
<note xml:id="note-L6F1" dur="semibrevis" oct="4" pname="e" accid.ges="n" />
</layer>
</staff>
</measure>
</section>
</score>
</mdiv>
</body>
</music>
</mei>
It is probably better to encode
:characters as<dot>in MEI conversions. Example:**mensdata:If they are an augmentation dot, then probably adding
Porpis best, and maybe::would indicate an explicit dot of division (to be decided later). Rhythmic augmentation dots could be encoded asnote@dotsas currently, but they would not be displayed. But probably better to encode them asnote@dots.ges. See issue rism-digital/verovio#757 related to this (note@dots.gesare not yet implemented).If in circle mensuration, then the first dot above would function like an augmentation dot, and the second like a dot of division. So an explicit expression of the rhythm might be:
The
pwould force a visual dot when converting to modern notation, and theiwould suppress the dot in conversion to modern notation.A problem is that the meaning of the dots depends on the mensuration. If the mensuration is changed, an augmentation dot might become a dot of division and vice-versa.
MEI conversion (
develop-humdrumbranch):