| Summary: | it is impossible to typeset an overlapping overbrace and underbrace pair | ||
|---|---|---|---|
| Product: | LibreOffice | Reporter: | Andras Timar <timar74> |
| Component: | Formula Editor | Assignee: | Not Assigned <libreoffice-bugs> |
| Status: | NEW --- | ||
| Severity: | enhancement | CC: | xiscofauli |
| Priority: | medium | ||
| Version: | unspecified | ||
| Hardware: | Other | ||
| OS: | All | ||
| Whiteboard: | |||
| Crash report or crash signature: | Regression By: | ||
| Bug Depends on: | |||
| Bug Blocks: | 39750 | ||
| Attachments: |
scanned image of the formula
Screenshot showing formula and rendering in v4.1.3.2. |
||
Created attachment 89113 [details]
Screenshot showing formula and rendering in v4.1.3.2.
I am confirming this bug. Status set to NEW. There remains no elegant way to typeset the indicate formula in Math. Attached is a screenshot (taken under Crunchbang 11 linux running v4.1.3.2) showing an inelegant workaround, but the line spacing remains too great. Formula in the screenshot:
stack {
alignl { { phantom { a "+" b } } overbrace x } #
a "+" b "+" c #
alignr { { phantom { b "+" c } } underbrace y }
}
Summary edited for clarity. You're right, but I'm not sure it can be implemented with the starmath actual system. I've been making further research on the matter. The nodes system may support it, but not the parser. Maybe it can be done. I'll try to do it, but gonna take at least one month. Removing Assignee. No action done in a while (In reply to Xisco Faulí from comment #5) > Removing Assignee. No action done in a while This bug is impossible. It is easy to introduce code for it in parser. But I can't find any way to make it compatible with mathml. <math display="block">
<mrow>
<mpadded width="0px">
<mrow>
<mover>
<mover>
<mphantom>
<mi>a</mi>
<mo>+</mo>
<mi>b</mi>
</mphantom>
<mo stretchy="true" style="math-depth:0;">⏞</mo>
</mover>
<mi>x</mi>
</mover>
</mrow>
</mpadded>
<mi>a</mi>
<mo>+</mo>
<mrow>
<munder>
<munder>
<mrow>
<mi>b</mi>
<mo>+</mo>
<mi>c</mi>
</mrow>
<mo stretchy="true" style="math-depth:0;">⏟</mo>
</munder>
<mi>y</mi>
</munder>
</mrow>
</mrow>
</math>
|
Created attachment 67370 [details] scanned image of the formula It is impossible to typeset the attached formula in Math, while it is possible in LaTeX: \documentclass[12pt]{article} \usepackage{amsmath} \begin{document} \[ \rlap{$\overbrace{\phantom{a+b}}^x$}a +\underbrace{b+c}_y \] \end{document} The formatting command like \rlap is missing from Math.