On 2016-03-16 08:04-0000 Arjen Markus wrote:

>> So for this case it appears there are consistent
>>
>> Matrix operator "x" already in use
>>
>> basic error messages between the two methods. but that basic error message is
>> not at all consistent with the above naive interpretation of what should 
>> happen due
>> to the above one-line change.  Also I don't understand at all why the 
>> scripted test
>> adds so much additional information to the basic error message while the 
>> direct test
>> does not do that!
>>

> This is a characteristic feature of the Tcl shell: in interactive
mode it produces a more concise error message than in "batch" mode,
i.e. when running a script. So there is nothing wrong there.

Thanks for that explanation of the concise versus expanded error
messages.  It still leaves two big question though
which is why the artificial error in Tcl_GetMatrixPtr generated
by my local one-line change never gave the expected
message (in either direct or script mode)

No matrix operator named...

and why when there is a real Tcl_GetMatrixPtr error which should
generate some variant of

No matrix operator named...

that message is completely suppressed in script mode as occurred
recently before my fix to stop using GetEntries for the last argument
(which is scalar) in plmaptexCmd.

Alan
__________________________
Alan W. Irwin

Astronomical research affiliation with Department of Physics and Astronomy,
University of Victoria (astrowww.phys.uvic.ca).

Programming affiliations with the FreeEOS equation-of-state
implementation for stellar interiors (freeeos.sf.net); the Time
Ephemerides project (timeephem.sf.net); PLplot scientific plotting
software package (plplot.sf.net); the libLASi project
(unifont.org/lasi); the Loads of Linux Links project (loll.sf.net);
and the Linux Brochure Project (lbproject.sf.net).
__________________________

Linux-powered Science
__________________________

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