On 11/15/2012 12:27 PM, Alan BRASLAU wrote:

! MetaPost capacity exceeded, sorry [expansion depth=10000].

this normally points to an error in mp code, not to instances

I have come across this error previously with run-away \dorecurse loops

I now have this message with a document that makes VERY heavy use of MetaPost; I just have too many figures.

Is there some way to "flush" the running instance of MetaPost, that is to force MPlib to respawn or something like that? (Of course, I would then have to be careful not to rely on the reuse of any previous MP instances...)

yes: \starttext \defineMPinstance [myfun-a] [format=metafun] \defineMPinstance [myfun-b] [format=metafun] \startMPdefinitions{myfun-a} color MyColor ; MyColor := (1,0,0) ; \stopMPdefinitions \startMPdefinitions{myfun-b} color MyColor ; MyColor := (0,1,0) ; \stopMPdefinitions \startuseMPgraphic{myfun-a::test-1} fill fullcircle scaled 1cm withcolor MyColor ; \stopuseMPgraphic \startuseMPgraphic{myfun-a::test-2} fill fullcircle scaled 1cm withcolor MyColor ; \stopuseMPgraphic \startuseMPgraphic{myfun-b::test-1} fill fullcircle scaled 1cm withcolor MyColor ; \stopuseMPgraphic \startuseMPgraphic{myfun-b::test-2} fill fullcircle scaled 1cm withcolor MyColor ; \stopuseMPgraphic \useMPgraphic{myfun-a::test-1} \useMPgraphic{myfun-b::test-1} \useMPgraphic{myfun-a::test-2} \useMPgraphic{myfun-b::test-2} \stoptext however, during some cleanup stage something got lost ... so you need to fix this: \unprotect \def\meta_use_graphic#1#2% {\meta_begin_graphic_group{#1}% \doifsomething{#2}{\setupMPvariables[\currentMPgraphicname][#2]}% \getvalue{\??mpgraphic#1}% \meta_end_graphic_group} \protect there are few more places where \getvalue{\??mpgraphic ... needs a #1 (I'll fix it). So indeed you can have multiple independent instances. For instance we could have one for the chemical stuff which then cannot be messed up by other instances. 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 -----------------------------------------------------------------