https://bugs.documentfoundation.org/show_bug.cgi?id=104753
--- Comment #4 from Regina Henschel <[email protected]> ---
Created attachment 129786
--> https://bugs.documentfoundation.org/attachment.cgi?id=129786&action=edit
Use of mpadded in MathML
(In reply to sergio.callegari from comment #3)
> Note that the issue can be solved in different ways:
>
> 1) Assuring that ' is treated as a proper superscript, so that a subscript
> is placed below it and not also to the side of it;
There is no problem using an apostrophe (' U+0027) or a prime (′ U+2032) as
superscript and stacking of superscript and subscript works too. But for these
two characters the tick is rendered high in itself, so it looks as if it is
placed very high, in case the character is set to superscript in addition.
To get a better looking solution, you need an option to get influence on the
position, and that would be way "2". The currently possible setting in Format >
Spacing > Category: Indexes is a global setting. A setting per character or
group is needed.
>
> 2) providing the concept of "negative space" to LibO Math, so that one can
> remove the horizontal space taken by the prime sign.
I would go with this proposal, because the normative language is not StarMath
but MathML. And MathML has already the attributes lspace and voffset in its
<mpadded> element and allows negative values for them. The request here would
be to extend StarMath to support this element and its attributes.
I have attached MathML examples, where you can see, how <mpadded> works. Look
at it in a browser like SeaMonkey (or perhaps Firefox; I have not tried). You
can open the examples in an editor and alter the attribute values.
Would this solve your request? If yes, then I suggest, to alter the subject
accordingly.
>
> 3) providing the concept of "object taking no space" to LibO Math, so that
> the prime sign can be inserted without it taking any horizontal space.
I do not see the difference to way "2".
>
> Note that 1) is what LaTeX does seamlessly. And I must admit that I am
> spoiled by LaTeX.
What does LaTeX, if you do not use a prime but a different character, for
example a "T"? Would you please attach an image, how LaTeX renders these
examples, in a large zoom?
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