The brackets for simple items like < S > sit too low and are too big

[stefan11]

The following code produces:

\avm{[arg-st & < S > \+ \2]}

But it should produce:

[kopeckyf]

This isn't a bug, everything is as it should be given current langsci-avm. The approach to solve this issue would be to introduce special treatment for singletons, i.e. for sub-structures that contain only one item. Introducing this special treatment is something we should do, but the optimal solution for it is as of yet unclear.

[stefan11]

Ah. avm.sty had \q< \q> or something similar for this. I used \sliste{ S } so far but dreamed of something that does everything automatically.

[kopeckyf]

There are several possibilities how the automatic solution could achieve special treatment. One of them is to set \arraystretch to 0. You can do this now, if you like, using

\avm[stretch=0]{[arg-st & < S > \+ \2]}

But beware that this will produce a very tight AVM as the outer [ ... ] are affected as well. One could also apply \def\arraystretch{0} to the innermost structure only, but I think this kind of "hack" is something one should always avoid.

[stefan11]

What I would like to have is that the package determines what it sees. If there is just an NP or an S in the brackets, it should do it right. Everything else does not solve the problem of proper typesetting since author will start to fiddle with stuff. This is not what we want. Experience tells us that this actually causes more work. (on both sides)