[Libreoffice-bugs] [Bug 114493] In Math Formula the spacing around operators, numbers, identifiers etc should be adjustable

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=114493

Jean-Baptiste Faure  changed:

   What|Removed |Added

 Status|UNCONFIRMED |NEW
 Ever confirmed|0   |1

--- Comment #5 from Jean-Baptiste Faure  ---
Thank you very much Regina for your answer. So setting as NEW.

Best regards. JBF

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[Libreoffice-bugs] [Bug 114493] In Math Formula the spacing around operators, numbers, identifiers etc should be adjustable

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=114493

--- Comment #4 from Regina Henschel  ---
This is a valid request. Unfortunately type setting of formulas are not
strongly standardized. But the values in the operator dictionary are suitable
as default in LibreOffice. https://www.w3.org/TR/MathML3/appendixc.html.

There exists some bugs about spacing, e.g. 66279, 107379, 104194. But they are
not really duplicate. I think we should keep this issue for the spacing aspects
in StarMath and the related UI. Of cause import from and export to MathML has
to be implemented at the same time.

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[Libreoffice-bugs] [Bug 114493] In Math Formula the spacing around operators, numbers, identifiers etc should be adjustable

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=114493

Jean-Baptiste Faure  changed:

   What|Removed |Added

 CC||rb.hensc...@t-online.de
   Severity|normal  |enhancement

--- Comment #3 from Jean-Baptiste Faure  ---
Hi Regina,

I think you are the right person to evaluate this enhancement request :-)
What do you think ?

Best regards. JBF

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[Libreoffice-bugs] [Bug 114493] In Math Formula the spacing around operators, numbers, identifiers etc should be adjustable

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=114493

--- Comment #2 from Vladislav Ivanistsev  ---
Sure, one can use "`" or "~". 

Yet, take a look on the implementation in mathml. For the mo element there is
an "lspace" and "rspace" parameters. Both depend on the form of an element --
prefix (eg "("), infix (eg "+") or postfix (eg ")".

Your solution is equivalent of adding manually mspace element in mathml. A more
elegant solution rely of the https://www.w3.org/TR/mathml-for-css/#mo, where
several types are defined:

mi  identifier
mn  number
mo  operator, fence or separator
mtext   text
mspace  space
ms  string literal

Using these types it is possible to define and redefine difference space values
in a more flexible way than it is currently done in LO formula editor.

Herewith, padding is set only in the following cases:
mo[largeop="true"]
{font-size:1.3em;
vertical-align:-0.1ex;}
mo[form="infix"], * + mo
{padding:0 0.3ex;}
mo[form="prefix"]
{padding:0 0 0 0.5ex;}
mo[form="postfix"]
{padding:0 0.5ex 0 0;}
mo[fence="true"], mo[separator="true"]
{padding:0;}

I propose distinguishing fences and separators from other operators, and allow
adjusting space around them in a separate way.

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[Libreoffice-bugs] [Bug 114493] In Math Formula the spacing around operators, numbers, identifiers etc should be adjustable

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=114493

Jean-Baptiste Faure  changed:

   What|Removed |Added

 CC||jbfa...@libreoffice.org

--- Comment #1 from Jean-Baptiste Faure  ---
(In reply to Vladislav Ivanistsev from comment #0)
[...]
> Mark that the spacing around operators + and = too small.

It's a matter of taste.

You can add small or normal spaces around + and = if you want :

code : f(2`+`2) `=` 4
or code : f(2~+~2) ~=~ 4

Best regards. JBF

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