https://bugs.documentfoundation.org/show_bug.cgi?id=79695
Regina Henschel <[email protected]> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |[email protected] --- Comment #7 from Regina Henschel <[email protected]> --- A docx document is not helpful here, because it uses "http://schemas.openxmlformats.org/officeDocument/2006/math";, which requires a different filter. This is about the MathML import filter. Our own MathML is not imported from the pure MathML but from the embedded annotation, which contains the StarMath string. The part, which can read pure MathML, is in a bad state. The internal model is designed for StarMath and lacks many properties needed for MathML. The attached document is far too large. The formulas might have different problems and it would be good, to make a single issue for each problem, if not already existing. I have looked at the formula in the lower part of page 13. It is OLE-object "18" in the navigator. I can identify some problems: (1) StarMath does not allow an empty matrix cell. LibreOffice should insert a small space or an empty string for StarMath in such cases. (2) The brace for the case distinction is a <mml:mo>{</mml:mo>. It is imported as lbrace. That is bad, because it does not preserve the default "stretchy" attribute of this operator and prevents setting a closing "right none", which is needed for StarMath, because it requires balanced brackets. LibreOffice should use a "left lbrace" and insert a "right none", when the enclosed element is closed and no bracket follows. (3) The source uses <mml:mo>∣</mml:mo> to represent the lines of the abs function, where the ∣ is the unicode symbol "DIVIDES". A literal translation would result in StarMath operator "divides", which does not fit well in this context. StarMath itself uses the unicode symbol "VERTICAL LINE" for the lines of the abs function and imports them as "left lline" and "right lline" in case the annotation is missing. I don't know a save algorithm to detect whether a true "divides" is intended or not. The operators have no mathematical meaning in Presentation MathML, so it is not a direct fault, but it is at least bad style by Microsoft. -- You are receiving this mail because: You are the assignee for the bug.
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