Re: XYpic

["luigi.scarso" <luigi.scarso@logosrl.it>]

Vit, the last things.
After that I consider this topic closed.

 >>+ limitation by substance: drawing is mostly done via fonts
Yes, I forget to write it.
 >>[XFIG]..Export to context is good news. But still no parametrization 
possible :-(
..maybe something to play this summer...

Now for metapost:

shell_escape= f
in texmf.cnf
so \write18 is disabled.


$>texexec --pdf f
No circle; it seems right, because f.log says
systems        : randomizer starts with 797065300
mpost  -progname=mpost -mem=metafun f-mpgraph
system()...disabled.

$> shell_escape=x ; texutil --purgeall; texexec --pdf f
As before.

$> shell_escape= ; texutil --purgeall; texexec --pdf f
As before.

$> shell_escape=t ; texutil --purgeall; texexec --pdf f
Circle ok; again it's right, f.log says
systems        : randomizer starts with 800565448
system(mpost  -progname=mpost -mem=metafun f-mpgraph)...executed.

$> shell_escape=f ; texutil --purgeall; texexec --pdf f
Strange:circle again.
I found into texexec.pl
if (($ENV{shell_escape} eq 'f') || ($ENV{SHELL_ESCAPE} eq 'f')) {
    $AutoMPRun = 1 ;
}
Hence texexec/texutil has called mpost instead of \write18; it's like 
shell_escape=t
(for this task, not in general sense, of course)
Hmm, it's not crystal clear:
shell_escape=f  means "shell_escape is  False"
shell_escape=t  means "shell_escape is  True"
but for processing f.tex 'True and False are the same'

$>shell_escape=; texutil --purge; texexec --pdf --automprun f
Circle ok; it seems right, because I force execution of mpost.

Again, many thanks
luigi