🚀 go-pugleaf

Is there a bug in PBMPLUS for VMS, as found on the VMSNET.SOURCES archives?
After copying the saveset, unpacking the files and doing @SETUP I want to
convert color PCX files to readable PBM files (I know that the color information
is lost, that is actually useful in this application). On a Unix machines I 
can use something like
"pcxtoppm file.pcx | ppmtopgm | pgmtopbm -threshold | pnmnoraw > file.pbm"
The corresponding sequence under VMS should be "@p2b file", where p2b.com is: 

$! pcx -> ppm
$ define/user sys$output 'p1'.ppm
$ pcxtoppm 'p1'.pcx
$! ppm -> pgm
$ define/user sys$output 'p1'.pgm
$ ppmtopgm 'p1'.ppm
$! pgm -> pbm
$ define/user sys$output 'p1'.pbm_raw
$ pgmtopbm -threshold 'p1'.pgm
$! pbm -> pbm (ASCII)
$ define/user sys$output 'p1'.pbm
$ pnmnoraw 'p1'.pbm_raw

The first step works fine, but then the ppmtopgm step breaks down and I get
a file with 3 lines of header and no data... What am I doing wrong?

-psi
 
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