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From: Keith McKay <mckaymeister@gmail.com>
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Subject: Problem with show command in MetaFun
Date: Thu, 7 Jan 2021 15:11:45 +0000
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In the MWE below I would expect the "show" command to print the value of 
p in the console output (I use Texworks), however this does not seem to 
be happening. I haven't used "show" in MetaFun for a while, am I 
implementing it correctly?

Best Wishes

Keith McKay

%%%%%%%% MWE %%%%%%%%%

\setuppapersize[A4, portrait]

\starttext

\startMPpage

StartPage;

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

numeric p;

p := 0;

for q = 0 step 1 until 10:

show p;

p := p + 1;

fill fullcircle xyscaled(3cm,4cm) shifted ((p +2)*cm, (p + 2)*cm) 
withcolor red ;

endfor;

StopPage;

\stopMPpage

\stoptext


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<html>
  <head>

    <meta http-equiv="content-type" content="text/html; charset=UTF-8">
  </head>
  <body>
    <p>In the MWE below I would expect the "show" command to print the value of p in the console output (I use Texworks), however this does not seem to be happening. I haven't used "show" in MetaFun for a while, am I implementing it correctly?</p>
    <p>Best Wishes</p>
    <p>Keith McKay</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">%%%%%%%% MWE %%%%%%%%%</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">\setuppapersize[A4, portrait]</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;">numeric p;</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">p := 0;</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">for q = 0 step 1 until 10:</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">show p;</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">p := p + 1;</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">fill fullcircle  xyscaled(3cm,4cm) shifted ((p +2)*cm, (p + 2)*cm) withcolor red ;</p>
    <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">endfor;</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 type="text/css">p, li { white-space: pre-wrap; }</style></p>
  </body>
</html>

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