[bug #61025] [me] want control of line height alteration when super-, subscripting

[G. Branden Robinson]

Update of bug #61025 (project groff):

              Item Group:     Incorrect behaviour => New feature            
                  Status:                    None => In Progress            
             Assigned to:                    None => gbranden               
                 Summary: [me] adjusts line heights when using superscripting
=> [me] want control of line height alteration when super-, subscripting

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Follow-up Comment #1:

The current behavior is in fact how me(7) is documented to work and has been
for a long time; see, e.g., the 4.4BSD meref.me
<https://svnweb.freebsd.org/csrg/share/doc/usd/20.meref/ref.me?revision=67302&view=markup#l1913>;
however, I agree that this should be configurable (in fact there is a hidden
knob register, "0x" that pic(1) uses to turn it off), and moreover that the
default is ugly and inconsistent with modern typesetting practices.

I propose to add a new me(7) Boolean-valued register, $x, to enable this
behavior, and to switch it off by default.  It will be _and_ed with 0x in the
super- and subscripting string definitions in troff mode.

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  <https://savannah.gnu.org/bugs/?61025>

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