z0 and Z0 for line break without custos

[eroux]

Original thread here. It would be useful to allow line break with no custo with z0 and Z0

[eroux]

1 might be better than 0 which is already taken...

[rpspringuel]

Actually, I think z- and Z- would be better if they won't screw up the parser. Along similar lines z+ and Z+ should force a custos, even in cases where one would not normally be printed.

[eroux]

good idea yes

[henryso]

z- and Z- would take precedence over an initio debilis immediately after the line break, with no spaces in between, in the same syllable. The user could probably override that with a !. I think that's probably acceptable.