Using a fresh install of ConTeXt Minimals today (ConTeXt version 2011.07.14 16:09, luatex version beta-0.70.1-2011051918) I am trying to build the following MetaPost graphics: ---8<--- file: test.mp fontmapfile "=lm-math.map" ; beginfig(1) draw fullcircle scaled 3cm ; endfig ; beginfig(2) ; fill fullcircle scaled 5cm withcolor red ; endfig ; beginfig(3); numeric u; u = 1cm; draw (0,2u)--(0,0)--(4u,0); pickup pencircle scaled 1pt; draw (0,0){up} for i=1 upto 8: ..(i/2,sqrt(i/2))*u endfor; label.lrt(btex $\sqrt x$ etex, (3,sqrt 3)*u); label.bot(btex $x$ etex, (2u,0)); label.lft(btex $y$ etex, (0,u)); endfig; end . ---8<--- Building the file using "mpost test.mp" I get the following: This is MetaPost, version 1.504 (kpathsea version 6.0.0) (mpost.mp (/opt/tools/ConTeXt/beta/tex/texmf/metapost/base/plain.mp Preloading the plain mem file, version 1.004)) (./test.mp{pdftex.map}{lm-math.map} [1] [2]/opt/tools/ConTeXt/beta/tex/texmf-context/scripts/context/ruby/base/switch.rb:570:in `locateseries': undefined method `each' for "tex":String (NoMethodError) from /opt/tools/ConTeXt/beta/tex/texmf-context/scripts/context/ruby/base/switch.rb:397:in `block in expand' from /opt/tools/ConTeXt/beta/tex/texmf-context/scripts/context/ruby/base/switch.rb:392:in `each' from /opt/tools/ConTeXt/beta/tex/texmf-context/scripts/context/ruby/base/switch.rb:392:in `expand' from /opt/tools/ConTeXt/beta/tex/texmf-context/scripts/context/ruby/texexec.rb:789:in `<main>'
test.mp test.mpx ! Unable to make mpx file. l.18 label.lrt(btex $\sqrt x$ etex, (3,sqrt 3)*u); 2 output files written: test.1 .. test.2
The first two graphics are produced correctly, but there is no output for the third graphic with the labels. Building the file using "texexec --mptex test.mp" all three graphics are produced, but the label $\sqrt x$ does not produce the square root symbol. Am I doing something obviously wrong? Can anyone reproduce this? Thanks, Kevin