parlocs file processing gets confused by variable baselineskip #1117
Description
When text is set with a flexible baseline, then all calculations based on the baseline get confused.
At the moment, a warning is given, as it assumes rigid spacing. However, it is only expressly relevant for paragraphs needing to use it (e.g. those with a delayed item), and in other cases it's a notice that something unexpected has happened. (e.g. there's some extra spacing that needs accounting for in the parlocs file).
The correct thing to do, probably, is to (a) keep track of when the calculation is necessary and only give the warning if the baseline is rigid.
(b) compare the number of lines in a paragraph with the space used and record the effective baseline spacing, then use that in later runs to calculate cutout positions, etc.