[bug #66054] [troff] permit special characters as source hyphenation codes

[Dave]

Follow-up Comment #13, bug #66054 (group groff):

[comment #10 comment #10:]
> [comment #7 comment #7:]
> > make more explicit what ".hcode a a" means in practical terms.
> 
> I kind of think it does...?
[...]
> Assigning the
> code of an ordinary character code to itself effectively creates a
> unique hyphenation code (which can then be copied to others).

Oh, I think I see it now.  I thought this sentence wasn't covering your
clarification in [comment #4 comment #4:]

> There's a subtlety: you might do this to move a letter from an
> equivalence class with another letter to its own equivalence class.

But in fact it is the act of creating a unique hyphenation code (for "B" in
your example) that decouples it from its previous mapping.


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