Re: [Plplot-devel] tcl binding now works on AT branch

[Maurice L. <mj...@ga...>]

Alan W. Irwin writes:
 > Actually the AT tcl binding was fine last night, but I just didn't know it.
 > 
 > I had a tough time finding what the problem was because somebody stripped
 > the error messages out of tclAPI.c so it just failed silently when the
 > extended search failed.  That is not a good situation since the extended
 > search is still unreliable.  This silent failure may be the reason why
 > nobody seems to be seriously trying the fundamentally important tclsh (or
 > wish) methods of running plplot commands.

If the extended search fails PlbasicInit() returns TCL_ERROR, which: (a) is
all the info you really need since you have a stack trace to find where the
error occured, and (b) there's no other info to give really -- at the point
of failure "libdir" is NULL after several tries to give it a value.  I suppose
one nice enhancement would be for PlbasicInit() to set its internal debug
variable using a Tcl global variable of the same name so you could get
immediate feedback w/o recompilation.

But anyway for now to get more info on the search process recompile with
debug=1 in PlbasicInit() and see what it tells you, that should help.

-- 
Maurice LeBrun    mj...@ga...
Research Organization for Information Science and Technology of Japan (RIST)