Comments (4)
This ability is needed for computation-heavy interactive programs like my
Mandelbrot Explorer:
https://groups.google.com/d/topic/comp.lang.postscript/CZGwAun5Juo/discussion .
If the resolution is set too high, the drawing will be painfully slow, but
cancelling (in ghostscript) exits the entire interpreter, losing the active
program parameters.
interrupt signals -> /interrupt errors is the right thing to do, according to
the PLRM.
Original comment by luser.droog
on 30 Oct 2013 at 9:36
from xpost.
A later version of the same program:
http://code.google.com/p/xpost/downloads/detail?name=mandel2.ps .
Original comment by luser.droog
on 30 Oct 2013 at 9:39
from xpost.
This is a usability requirement for dealing with runaway programs. Infinite
loops and such. If not an interrupt signal per-se (depending upon application
requirements), There should be some mechanism for stopping a long-running
execution from the outside, gracefully. And this should manifest from the
postscript-level as an /interrupt error, sandwiched between the execution of
two normal objects, as described in the PLRM.
Original comment by luser.droog
on 2 Dec 2013 at 11:49
from xpost.
This one should probably be considered low priority. Ghostscript doesn't do this. When I filed a bug report with them, it was closed as "Confirmed. Won't Fix." So GS doesn't even do it, and has no plans to do it. And I suppose we've all gotten by well enough in the meantime without missing this feature very much.
OTOH it is something that GS doesn't do! So it's potentially a feature we have that GS doesn't, once implemented that is.
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