Re: [Lilypond-auto] Issue 3619 in lilypond: Patch: Make markup commands \super and \sub produce correct placement

[lilypond]

Comment #5 on issue 3619 by address@hidden: Patch: Make markup commands \super  
and \sub produce correct placement
http://code.google.com/p/lilypond/issues/detail?id=3619

Regarding comment #3: we have _several_ functions for formatting  
chordnames.  In my opinion, most of them suck visually, and in particular  
the definitions can't deal with changes of font-size.  But as long as the  
functions use super/sub, one can't change the latter without reviewing the  
effects on the former.

The C7 superscript clearly is too low for comfort: it's lower than a  
mathematician would place it (though it may be acceptable in chemistry).   
If we take a look at the output from the following plain TeX file (which is  
more or less the reference for Knuth style maths):
$${\rm C}^7$$
${\rm C}^7$
\end
we'll see two different positions for the superscript.  The first is for  
display math, the second is for inline math and is consequently a "cramped"  
style aiming not to cause overtall lines.

LilyPond is not primarily concerned with inline typesetting, so I don't  
think we need a cramped style (one possible exception is the positioning of  
footnote anchors in top-level markup, but I doubt we need to make amends  
for that).

So in my opinion, the proposed styles look too cramped.  When taking a leaf  
from TeX, one should rather refer to display math super/subscript  
positioning.  This will admittedly make chemical formulae take more  
vertical space than typical PhD theses grant them, but that's not the  
primary focus of LilyPond.

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