[GRASS-dev] Re: v.digit does not start from gis.m

[Maris Nartiss]

Hi Glynn,

Your idea works like charm. Attached it as patch for faster commiting.

Only thing that makes me wonder - that "spawn" call was there since
May 8 2006 [1] - why it was problem only for 6.3? Or noone was using
ever v.digit from gis.m??

Anyway - thanks for saving day (again),

Maris.

[1] http://freegis.org/cgi-bin/viewcvs.cgi/grass6/gui/tcltk/gis.m/runandoutput.tcl.diff?r1=1.6&r2=1.7

2007/2/22, Glynn Clements <glynn at gclements.plus.com>:
>
> Maciej Sieczka wrote:
>
> > Maris has submitted a patch with a hack/fix for this issue. Please see
> >
> http://wald.intevation.org/tracker/?func=detail&atid=204&aid=298&group_id=21.
> > It works for me, but it's hackish. Better ideas?
>
>  	spawn d.mon start=$xmon
>
> Rather than using "spawn", you could try "exec", but you need to
> redirect the standard descriptors, otherwise exec won't return. E.g.
> (untested):
>
> 	global devnull
> 	exec d.mon start=$xmon >$devnull 2>$devnull
>
> Although the d.mon process terminates once the monitor is accepting
> connections, the monitor will inherit the stdout/stderr pipes which
> Tcl's exec command creates, and exec won't return until these are
> closed (it returns the entire output from the command as its result).
>
> OTOH, I've been re-writing v.digit not to require a monitor, so
> hopefully this issue should soon be moot.
>
> --
> Glynn Clements <glynn at gclements.plus.com>
>
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