unexpected line break within abc.123
Pango breaks line (if needed) at a dot joining letters and numbers (like "abc.123"), just as if there was a space after the dot ("abc. 123"). No line break is inserted in "abc.abc" nor "123.123" nor "123.abc". This odd behaviour is problematic if you have e.g. chapter numbers like "I.1.2.3", which are rendered as:
see the chapter I.
1.2.3
I'm not sure if this is a bug or intended behaviour; maybe there is such a typographic rule somewhere? In any case, the rule is not universal.
I faced the issue while using WeasyPrint: https://github.com/Kozea/WeasyPrint/issues/2015
Edited by staho