In theory, only operators like those mentioned in http://www.w3.org/TR/MathML3/appendixc.html#oper-dict.entries-table should be exported as <mo> elements. Symbols like emptyset, aleph, setN that are more like variables should use <mi> elements instead.
NEW right away :). Kind regards, Joren
I've submitted a patch for review: https://gerrit.libreoffice.org/#/c/4595/
Marking these bugs assigned since I've already taken them.
Frederic Wang committed a patch related to this issue. It has been pushed to "master": http://cgit.freedesktop.org/libreoffice/core/commit/?id=43cf39adff66d20862956869d11fbcc184eb5702 fdo#66088 Export some math symbols as <mi> elements. The patch should be included in the daily builds available at http://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: http://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.
Reopening this bug as it seems that I overlooked the NSPECIAL and NGLYPH_SPECIAL cases. NGLYPHSPECIAL correspond to the commands uoper, boper, oper to define operators and so should still be exported as <mo> elements. NSPECIAL correspond to the %xxxx commands. Most of them are greek letters like %alpha so should be exported as <mi> elements. Other correspond to binary operators (without syntax verification) like %and so should be exported as <mo> elements. I think users can define their own %xxxx commands so a generic way to detect whether a character is an operator is needed (bug 66279)
Frederic Wang committed a patch related to this issue. It has been pushed to "master": http://cgit.freedesktop.org/libreoffice/core/commit/?id=9bb74686b1f857e791235381db632d1b5ac58296 fdo#66088 - follow-up: handle NGLYPHSPECIAL and NSPECIAL too. The patch should be included in the daily builds available at http://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: http://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.
This is not completely fixed and depends on bug 66279. %xxx are now exported as <mi>'s rather than <mo>'s which is OK since most of them are Greek letters. But a few commands like %noelement should be <mo>. Users can also define their own commands with the Catalog menu. See comment 5.
OK, I overlooked that.
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