rbeezer
commented
3 months ago Well, that tex.se post is very interesting reading. ;-)
Looks like a good change. I'll likely drop in a code comment to explain the * so that nobody removes it later (including this forgetful somebody).
There is an issue that is difficult to reproduce, as it only arises under rare conditions. If you have a multicolumn exercisegroup, and the content of an exercise is a certain width that just barely fills up the available width, it leads to unwanted horizontal and vertical space.
I could try to mock up a PTX example, but I'm hoping that is not needed. This did come up in ORCCA, with out-of-the-box exercisegroup handling. Here is where I posted about this on tex.se. For that post, I took PTX tex output and pared it down to an MWE. You can see the unwanted space in the items where the content is a bit too wide: https://tex.stackexchange.com/questions/722329/unwanted-space-in-tcbraster
The accepted answer is to replace
\hspacewith\hspace*. Here is an explanation of the difference: https://tex.stackexchange.com/questions/89082/hspace-vs-hspaceWhat is happening is that when the content is an unfortunate width, it leads to LaTeX killing the negative space that we have here to outdent the number. And
\hspace*is a construction that refuses to let space like that be eaten up.