Last modified: 2014-07-24 21:25:57 UTC
I understand this was partly discussed in Bug 51175 (with suggestions about how to handle the issue), but whatever happened next didn't seem to affect this :) If you check out the source of https://it.wikipedia.org/w/index.php?title=Utente:Elitre_(WMF)/Sandbox_VE&oldid=64531360 , you'll notice a couple of templates at the top. Those were added with VE, and are collapsed, whereas editors on it.wp would want those kind of templates (which are basically infoboxes) to always display one parameter per line, no matter what the length of the template is.
This will require TemplateData annotations since other editors will complain if we started rendering cite templates (for ex.) with 1 parameter per line always. So, parsoid needs information about what templates use what style. To be discussed whether Parsoid will read this info from TemplateData sources directly or whether VE will pass along this info to Parsoid.