> Date: Sat, 12 Nov 2022 13:28:17 +0100 > From: Vincent Lefevre <vinc...@vinc17.net> > Cc: gavinsmith0...@gmail.com, bug-texi...@gnu.org, 989...@bugs.debian.org > > > > But "down" is the reverse of "up". > > > > No, it isn't. It is only the reverse of "up" if the node structure is > > a perfect tree. > > But if the node structure is not a perfect tree, prev-line is > not well-defined. Or perhaps it could just be defined as the > reverse of next-line. That would be an alternative solution.
Why do we need an alternative solution, when a good solution already exists, and has been in use for decades? Just because some package fails to produce a tree-structured Info file, when they generate Info from source that is not Texinfo, i.e. don't even use 'makeinfo' and friends? That makes no sense to me. Their manual is broken, that's all. I hope you reported this to them, or will do so soon.