[gscan2pdf-help] Exit status of user defined tools?

[Alistair G. <akg...@gm...>]

Hi Jeff,

Is the exit status of user defined tools checked?  And where does stderr go?

I'm currently trying to get gscan2pdf running inside a docker image.
It appears to be mostly working, I can scan, delete pages, renumber,
save, etc., but attempting to running textcleaner as a user defined
task fails:

DEBUG - Free space in /tmp/gscan2pdf-pcQB (Mb): 42126.60546875 (warning at 10)
INFO - textcleaner -e stretch -f 23 -o 6 -T
/tmp/gscan2pdf-pcQB/QZp0Rf3RmN.pnm /tmp/gscan2pdf-pcQB/lPP177XrQd.pnm
ERROR - Exception 425: improper image header
`/tmp/gscan2pdf-pcQB/lPP177XrQd.pnm' @ error/pnm.c/ReadPNMImage/282
ERROR - Error reading /tmp/gscan2pdf-pcQB/lPP177XrQd.pnm: Exception
425: improper image header `/tmp/gscan2pdf-pcQB/lPP177XrQd.pnm' @
error/pnm.c/ReadPNMImage/282.

The improper image header is raised because the output file,
lPP177XrQd.pnm, is 0 bytes long.

If I copy and paste the textcleaner command in a separate shell it
succeeds, i.e. I can view lPP177XrQd.pnm successfully.

The entire log file is 879K, but let me know if you want it.

Thanks!
Alistair