# Extra blank lines in reledpar within paragraph

I am formatting a facing-page translation using reledmac/reledpar and I am seeing occasional (apparently random) extra blank lines in mid-paragraph where there is no break in the source text. You can see this in the example at line 15 on the left-hand page and between 12R and 13R on the right-hand page.

(edit) This is the output of \showputput around the word "Ybor" towards the end of line 12R on the right-hand side.

....\EU1/antpoltlt(0)/m/n/10 Ybor,
....\penalty 10000
....\hbox(8.18507+0.0)x10.30273
.....\mathon
.....\hbox(4.55615+0.0786)x10.30273, shifted -3.62892
......\EU1/Junicode(0)/m/n/7 237
.....\mathoff
....\kern -0.00005
....\kern 0.00005
....\glue 2.95622 plus 1.84763 minus 0.78831
....\EU1/antpoltlt(0)/m/n/10 the
....\glue(\rightskip) 0.0
...\glue(\baselineskip) 9.5018
...\hbox(0.0+0.0)x312.0


There is also a problem in that there is an extra blank line after the first line of every section (on both sides), although this looks like less than one \baselineskip.

Before I start stripping everything back to the bare metal for an MWE, has anyone seen this before, or got pointers to where I might start looking?

I am using XeTeX, Version 3.14159265-2.6-0.99992 (TeX Live 2015/Debian) (preloaded format=xelatex 2018.8.15) under Linux Mint 18.3 with reledmac 2016/02/27 v2.8.2 and reledpar 2016/03/06 v2.7.1

• \showoutput then the log would show what the space is, (eg parskip or lineskip or baselineskip etc) – David Carlisle Sep 24 '18 at 7:57
• from your image I would guess the superscript citation macros are doing something.... – David Carlisle Sep 24 '18 at 7:58
• without MWE, it is difficul to say. But did you try with newest version of reledmac/reledpar. Maybe one bug has ben correct. – Maïeul Sep 24 '18 at 8:23
• Thanks for reminding me about \showoutput. I'll edit this in above. I suspected the superscripts, but I'll check again. Today: try new versions, if that doesn't break other dependencies. – Peter Flynn Sep 24 '18 at 8:44
• That superscript on p.271 line 12R is just a plain \footnote{238}; removing it fixed the problem, so the error must be in reledpar as I don't redefine \footnote anywhere, However, updating reledmac and reledpar to the CTAN latest breaks on other dependencies in xparse, so I'll need to find another way round as I don't want to screw with the Ubuntu TL distro. – Peter Flynn Sep 24 '18 at 21:01