[NTG-context] Escaping a special character in a MetaPost figure within a ConTeXt document fails

Raymond LeClair raymond.leclair at synterein.com
Wed Nov 30 16:15:26 CET 2011


I have escaped the '#' character in the usual way, using a backslash, as '\#' in a btex...etex picture as part of a MetaPost figure created within a ConTeXt document, but the escaped character still causes the ConTeXt processing to fail.

Here is an example...

\pdfminorversion=5

\definepapersize[LG1][width=4.25in,height=6.875in]
\definepapersize[LP1][width=4.25in,height=6.875in]

\setuppapersize[LG1][LP1]

\definelayout[frontmatter]
             [topspace=0.222222222222in,header=0.555555555556in,height=6.43055555556in,footer=0.694444444444in,
              backspace=1.05555555556in,width=2.86111111111in,location=middle,
              leftmargindistance=0.222222222222in,rightmargindistance=0.222222222222in,
              leftmargin=0.833333333333in,rightmargin=0.111111111111in]

\definefont[TitleFont][Serif sa 3.5]

\definecolor[TransparentWhite][b=1,t=0,a=1]

\def \FrontMatterTitle {
  \startreusableMPgraphic{frontmattertitle:\overlaywidth:\overlayheight}
    matter_paper_width := 4.25in;
    matter_paper_height := 6.875in;
    front_left_margin := 0.388888888889in;
    top_margin := 0.347222222222in;
    draw (0, 0)--(matter_paper_width, matter_paper_height)
      withpen pencircle scaled 1bp withcolor white;
    picture titleText;

    % == HERE IS THE SOURCE OF THE PROBLEM ==

    titleText := btex {\vbox{\hsize 2.72916666667in \baselineskip 38.0pt
                                \setupalign[flushleft,hyphenated,verytolerant]
                                \TitleFont THE BEGINNINGS OF \#BOOM}} etex;
    labeloffset := 0bp;
    label.lrt(titleText, (front_left_margin,
                          matter_paper_height - top_margin));
  \stopreusableMPgraphic
  \reuseMPgraphic{frontmattertitle:\overlaywidth:\overlayheight}
}

\defineoverlay[frontmattertitle][\FrontMatterTitle]

\starttext

\setuplayout[frontmatter]

{\TransparentWhite\title{...}}
\setupbackgrounds[page][background={{frontmattertitle}},state=repeat]
{\TransparentWhite\midaligned{...}}

\stoptext



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