On Mon, 2 Nov 2009, Andreas Schneider wrote:
as it seems, some symbols in math mode seem to fail when put inside
MetaPost. In the example I tried, both "~" and "|" were causing processing
errors when used inside MetaPost (I tried both btex...etex as well as
\sometxt). It works fine in MKII however.
The minimal example is attached to this mail.
I don't know how to prevent expansion of ~ and | inside mp. Hans, can you
please check what is the right way to correct this.
However, note that ~ does not make sense in math mode anyways. As a
work-around, you can use $a\ b\vert c$ inside metapost.
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