`<gap reason="lost" extent="unknown" unit="line"/>` sometimes becomes `lost<gap reason="illegible" extent="unknown" unit="character"/>lin`

[ryanfb]

Example:

<gap reason="lost" extent="unknown" unit="line"/>

Becomes:

lost<gap reason="illegible" extent="unknown" unit="character"/>lin

Files already exhibiting this phenomenon:

DDB_EpiDoc_XML/cpr/cpr.4/cpr.4.43.xml
DDB_EpiDoc_XML/p.koeln/p.koeln.11/p.koeln.11.443.xml
DDB_EpiDoc_XML/stud.pal/stud.pal.3(2).1/stud.pal.3(2).1.55.xml

Files which would exhibit this phenomenon with an idempotent Leiden+ transform:

DDB_EpiDoc_XML/bgu/bgu.15/bgu.15.2476.xml
DDB_EpiDoc_XML/bgu/bgu.3/bgu.3.942.xml
DDB_EpiDoc_XML/cpr/cpr.1/cpr.1.83.xml
DDB_EpiDoc_XML/cpr/cpr.14/cpr.14.52.xml
DDB_EpiDoc_XML/cpr/cpr.15/cpr.15.27.xml
DDB_EpiDoc_XML/o.stras/o.stras.1/o.stras.1.645.xml
DDB_EpiDoc_XML/p.ashm/p.ashm.1/p.ashm.1.22.xml
DDB_EpiDoc_XML/p.bad/p.bad.2/p.bad.2.28.xml
DDB_EpiDoc_XML/p.fouad/p.fouad.50.xml
DDB_EpiDoc_XML/p.freib/p.freib.4/p.freib.4.65.xml
DDB_EpiDoc_XML/p.iand.zen/p.iand.zen.68.xml
DDB_EpiDoc_XML/p.oslo/p.oslo.3/p.oslo.3.129.xml
DDB_EpiDoc_XML/p.oxy/p.oxy.67/p.oxy.67.4615.xml
DDB_EpiDoc_XML/p.oxy/p.oxy.68/p.oxy.68.4689.xml
DDB_EpiDoc_XML/p.sijp/p.sijp.12c.xml
DDB_EpiDoc_XML/p.tebt/p.tebt.2/p.tebt.2.291.xml
DDB_EpiDoc_XML/sb/sb.1/sb.1.4870.xml
DDB_EpiDoc_XML/sb/sb.24/sb.24.16129.xml
DDB_EpiDoc_XML/sb/sb.24/sb.24.16220.xml
DDB_EpiDoc_XML/sb/sb.26/sb.26.16417.xml