There are a couple almost-empty segments, pli-tv-bi-vb-ss4:2.1.27 and 2.1.28:
roo:~/Development/bilara-data(unpublished)$ ag "pli-tv-bi-vb-ss4:2.1.27"
html/pli/ms/vinaya/pli-tv-bi-vb/pli-tv-bi-vb-ss/pli-tv-bi-vb-ss4_html.json
62: "pli-tv-bi-vb-ss4:2.1.27": "<dt>{}</dt>",
root/pli/ms/vinaya/pli-tv-bi-vb/pli-tv-bi-vb-ss/pli-tv-bi-vb-ss4_root-pli-ms.json
62: "pli-tv-bi-vb-ss4:2.1.27": "",
reference/pli/ms/vinaya/pli-tv-bi-vb/pli-tv-bi-vb-ss/pli-tv-bi-vb-ss4_reference.json
21: "pli-tv-bi-vb-ss4:2.1.27": "ms2V_2287",
roo:~/Development/bilara-data(unpublished)$ ag "pli-tv-bi-vb-ss4:2.1.28"
html/pli/ms/vinaya/pli-tv-bi-vb/pli-tv-bi-vb-ss/pli-tv-bi-vb-ss4_html.json
63: "pli-tv-bi-vb-ss4:2.1.28": "<dd>{}</dd></dl></section>",
root/pli/ms/vinaya/pli-tv-bi-vb/pli-tv-bi-vb-ss/pli-tv-bi-vb-ss4_root-pli-ms.json
63: "pli-tv-bi-vb-ss4:2.1.28": "",
It came from this discussion, but I’m wondering if perhaps these two empty segments were added erroneously due to something else being funny in the data to begin with. Perhaps the ms2V_2287 reference was supposed to get stuck to a different segment?
edit: This empty root segment seems to have been added erroneously: pli-tv-bi-vb-pc18:2.3.1.2 (but the rest in that file added from 57c4bfaf0c1a seem fine)