View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0000286 | luatex | luatex bug | public | 2009-10-30 10:12 | 2009-12-24 17:13 |
| Reporter | Taco | Assigned To | Taco | ||
| Priority | normal | Severity | minor | Reproducibility | have not tried |
| Status | closed | Resolution | fixed | ||
| Target Version | 0.50.0 | Fixed in Version | 0.46.0 | ||
| Summary | 0000286: fix cambria script placement for large ops | ||||
| Description | it is rather obviously wrong now, as in this context file: \usetypescript[cambria] \setupbodyfont[cambria] \starttext $\displaystyle \int ^2_2$ \stoptext | ||||
| Tags | No tags attached. | ||||
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From Khaled: Office 2007 seems to handle sub/superscripts of big operators differently; superscript is placed immediately after base glyph while a negative kern equal to italic correction is inserted between base and subscript i.e. the reverse of what is described in the spec, and math kerning is ignored completely. |
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#3181 implemented this suggestion, however, now in context mkiv the placement of operator limits in latin modern became a mess (because the metrics do not agree). I will revert both #3181 and the original patch #3066 that did special code for variable delimiters, and Hans will somehow have to fix this in the cambria special settings overload |
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Both the font metrics and the spec on how to handle it are a mess, this will have to be patched by lua code. |
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Actually, the lack of horizontal displacement between super- and subscript were a luatex error that is now corrected by commit #3189 |
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And the way too much whitespace between integral and scripts also turned out to be a luatex problem, that is corrected by #3190. The result is now still too wide, but that is truly cambria's fault: the integrals have large italic corrections while in fact they fit in their bounding boxes. |
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Khaled asked Microsoft for clarification, and the result is the following rule: * If a character is part of an extensible list in any way, then use the italic correction only to tuck the subscript in (and ignore that ic for all other purposes). * If a character is not part of an extensible list, treat the italic correction as is normal in math mode. |
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Fixed by commit 3276. Context mkiv needs patching! |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2009-10-30 10:12 | Taco | New Issue | |
| 2009-10-30 10:12 | Taco | Status | new => assigned |
| 2009-10-30 10:12 | Taco | Assigned To | => Taco |
| 2009-11-02 09:43 | Taco | Note Added: 0000310 | |
| 2009-11-09 22:15 | Taco | View Status | private => public |
| 2009-11-20 12:13 | Taco | Note Added: 0000347 | |
| 2009-11-20 12:19 | Taco | Status | assigned => resolved |
| 2009-11-20 12:19 | Taco | Resolution | open => not fixable |
| 2009-11-20 12:19 | Taco | Note Added: 0000348 | |
| 2009-11-23 16:43 | Taco | Note Added: 0000352 | |
| 2009-11-23 16:59 | Taco | Note Added: 0000353 | |
| 2009-11-26 16:12 | Taco | Fixed in Version | => 0.46.0 |
| 2009-11-26 16:12 | Taco | Status | resolved => closed |
| 2009-12-11 13:24 | Taco | Note Added: 0000375 | |
| 2009-12-11 13:24 | Taco | Status | closed => assigned |
| 2009-12-11 13:24 | Taco | Resolution | not fixable => open |
| 2009-12-21 12:14 | Taco | Note Added: 0000376 | |
| 2009-12-21 12:14 | Taco | Status | assigned => resolved |
| 2009-12-21 12:14 | Taco | Resolution | open => fixed |
| 2009-12-24 17:13 | Taco | Status | resolved => closed |
