On 1/14/2014 12:13 AM, Elspeth McGullicuddy wrote:
Hi,
1- I put here a far too long example to show difficulties that I have with formulas in conjunction with framed: I haven't find a way to insert a formula (displaystyle, vertical mode), at the beginning of a \framed.
Here is a small example: \nopdfcompression \startTEXpage[offset=3cm] \hbox{$ x+y $} \stopTEXpage If you look in the pdf file you will see the following: /FontBBox [-1042 -3060 4082 3560] /Ascent 3560 /CapHeight 683 /Descent -3060 /ItalicAngle 0 /StemV 93 /XHeight 431 The less clever viewer can use that information for the selection dimensions. Acrobat instead uses the glyph properties. If you run instead \starttext \hbox{$$ x+y $$} \stoptext you will not get math at all because the $$ == an empty inline math so there a text font is used: /FontBBox [-422 -280 1394 1127] /Ascent 1127 /CapHeight 683 /Descent -280 /ItalicAngle 0 /StemV 91 /XHeight 431 In context, \hbox{\startformula x+y \stopformula} boils down to \hbox{\par $$ x+y $$ \par} plus some more so i decided to turn this into \hbox{\par \Ustartdisplaymath x+y \Ustopdisplaymath \par} Now, believe it it not, when I tested that one luatex crashed as we never thought about the fact that $$ is catched in the main loop and \Ustartdisplaymath falls through and creates havoc. So, after some debugging Luigi and I figured out that this was too messy to catch. Math magician Taco will fix it in luatex's parser part. So, be warned, don't this this trickery now. In the meantime, i fixed context to deal with such matters. Of course that bug doesn't relate to your observations. Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------