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Subject: Is there a bug in lmt_shade[...=...,...=...]
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Hi

Has a bug appeared in the command lmt_shade[ ]?

This used to work before I upgraded.

\setuppapersize [A5, portrait][A4, landscape]

\setuparranging[2UP]

\starttext

\startMPpage

StartPage;

width := PaperWidth ; height := PaperHeight ; unit := cm ;

definecolor [ name = "MyColor1", r = 0.781, g = 0.5, b = 0.5 ] ;

definecolor [ name = "MyColor3", r = 1, g = 1, b = 0.7983 ] ;

draw lmt_shade [

path = unitsquare xscaled width yscaled height,

direction = "up",

alternative = "linear",

colors = { "MyColor1", "MyColor3" },

] ;

StopPage;

\stopMPpage

\stoptext

The console output gives this:

system >

system > ConTeXt ver: 2020.07.29 14:08 LMTX fmt: 2020.7.29 int: 
english/english

system >

metapost > log >

metapost > log > loading metafun, including plain.mp version 1.004 for 
metafun iv and xl

metapost > log >

metapost > log > ! Not a cycle.

metapost > log > <to be read again>

metapost > log > withprescript

metapost > log > <argument> ...i.fill.mfun_shade_path.withprescript

metapost > log > "sh_domain="&decimal.domai...

metapost > log >

metapost > log > image->...ture;currentpicture:=nullpicture;(TEXT3)

metapost > log > ;currentpicture.if.str(SUF...

metapost > log >

metapost > log > lmt_do_shade->...shed.evenly;fi.fi.popparameters;)

metapost > log > endgroup

metapost > log > <scantokens> lmt_do_shade

metapost > log >

metapost > log > <*> ...ar", colors = { "MyColor1", "MyColor3" }, ]

metapost > log > ; StopPage; ;

metapost > log >

system > print height forced to paper height

system > print width forced to paper width

Thanks

Keith


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<html>
  <head>

    <meta http-equiv="content-type" content="text/html; charset=UTF-8">
  </head>
  <body>
    <p>Hi</p>
    <p>Has a bug appeared in the command lmt_shade[ ]?</p>
    <p>This used to work before I upgraded.</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">\setuppapersize [A5, portrait][A4, landscape]</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">\setuparranging[2UP]</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">\starttext</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">\startMPpage</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">StartPage;</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">width := PaperWidth ; height := PaperHeight ; unit := cm ;</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">definecolor [ name = "MyColor1", r = 0.781, g = 0.5, b = 0.5 ] ;</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">definecolor [ name = "MyColor3", r = 1, g = 1, b = 0.7983 ] ;</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">draw lmt_shade [</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">path = unitsquare xscaled width yscaled height,</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">direction = "up",</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">alternative = "linear",</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">colors = { "MyColor1", "MyColor3" },</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">] ;</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">StopPage;</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">\stopMPpage</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">\stoptext</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">
</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">The console output gives this:</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">

</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">system          &gt; </p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">system          &gt; ConTeXt  ver: 2020.07.29 14:08 LMTX  fmt: 2020.7.29  int: english/english</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">system          &gt; 

</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">metapost        &gt; log &gt; </p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">metapost        &gt; log &gt; loading metafun, including plain.mp version 1.004 for metafun iv and xl</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">metapost        &gt; log &gt; </p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">metapost        &gt; log &gt; ! Not a cycle.</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">metapost        &gt; log &gt; &lt;to be read again&gt; </p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">metapost        &gt; log &gt;                    withprescript</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">metapost        &gt; log &gt; &lt;argument&gt; ...i.fill.mfun_shade_path.withprescript</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">metapost        &gt; log &gt;                                                   "sh_domain="&amp;decimal.domai...</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">metapost        &gt; log &gt; </p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">metapost        &gt; log &gt; image-&gt;...ture;currentpicture:=nullpicture;(TEXT3)</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">metapost        &gt; log &gt;                                                   ;currentpicture.if.str(SUF...</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">metapost        &gt; log &gt; </p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">metapost        &gt; log &gt; lmt_do_shade-&gt;...shed.evenly;fi.fi.popparameters;)</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">metapost        &gt; log &gt;                                                   endgroup</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">metapost        &gt; log &gt; &lt;scantokens&gt; lmt_do_shade</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">metapost        &gt; log &gt;                          </p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">metapost        &gt; log &gt; &lt;*&gt; ...ar", colors = { "MyColor1", "MyColor3" }, ]</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">metapost        &gt; log &gt;                                                    ; StopPage; ;</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">metapost        &gt; log &gt; </p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">system          &gt; print height forced to paper height</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">system          &gt; print width forced to paper width</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">
</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">Thanks</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">Keith
</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><style type="text/css">
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p, li { white-space: pre-wrap; }</style></p>
    <p><style type="text/css">
p, li { white-space: pre-wrap; }</style></p>
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