Could and error call 'keyboard' automatically?

[Joao Cardoso]

Hi

After several hours of processing, an hidden script bug, data dependent,
can leave us... helpless.

Would it be possible that, on occurrence of an error, 'keyboard' be
called automatically, so one could examine variables, etc? Without this
facility it is almost hopeless to debug a script.

In my case, after surrounding the (sometimes--once in a million?)
offending statement in a 'try/catch' statement and rerunning the script,
produces no error. Until the next time, of course.

What I suggest is (still) another user preference that, on occurrence of
an error, would call 'keyboard'. Reasonable?

Thanks,
Joao

error: invalid vector index = 2
error: assignment failed for `scalar *= scalar'
error: evaluating assignment expression near line 28, column 11
error: evaluating if command near line 24, column 5
error: evaluating for command near line 21, column 4
error: evaluating for command near line 19, column 3
error: evaluating for command near line 16, column 2
error: called from `nbayes_clas' in file
`/u/qual/src/classificadores/nbayes_cla
s.m'
error: called from `feat_err_rate_clas' in file
`/u/qual/src/feature_sel/feat_er
r_rate_clas.m'
error: called from `leaveN' in file
`/u/qual/src/classificadores/leaveN.m'
error: called from `forward_search' in file
`/u/qual/src/feature_sel/forward_sea
rch.m'
error: evaluating switch command near line 222, column 7
error: called from `feature_sel' in file
`/u/qual/src/feature_sel/feature_sel.m



-----------------------------------------------------------------------
Octave is freely available under the terms of the GNU GPL.

Octave's home on the web:  http://www.che.wisc.edu/octave/octave.html
How to fund new projects:  http://www.che.wisc.edu/octave/funding.html
Subscription information:  http://www.che.wisc.edu/octave/archive.html
-----------------------------------------------------------------------