octave forge packages with current CVS

[Ben Barrowes]

On Friday 28 December 2007, Ben Barrowes wrote:
> On Monday 22 October 2007, David Bateman wrote:
> > Ben Barrowes wrote:
> > > I just compiled and installed the latest octave cvs, and then tried to install octave forge
> > > packages. However, after I downloaded the octave forge packages and cd'ed into the main
> > > directory and input:
> > > 
> > > pkg install specfun-1.0.3.tar.gz
> > > 
> > > I got sent straight to debug, whereupon lasterr told me:
> > > 
> > > octave:1> pkg install specfun-1.0.3.tar.gz 
> > > debug> lasterr
> > > ans = error: load: unable to find file /home/barrowes/.octave_packages
> > > debug> 
> > > 
> > > How does .octave_packages get created? What is its format? Did I skip a step?
> > > 
> > > 
> > > octave:2> ver
> > > ----------------------------------------------------------------------
> > > GNU Octave Version 2.9.15+
> > > GNU Octave License: GNU General Public License
> > > Operating System: Linux 2.6.22.9-server-1mdv #1 SMP Thu Sep 27 04:28:02 CEST 2007 i686
> > > ----------------------------------------------------------------------
> > > octave:3> 
> > > 
> > > 
> > > bb
> > 
> > Most odd, it should be created if it doesn't exist.. Does it exist? If
> > so remove it and try again..
> > 
> > D.
> > 
> > 
> 
> I have found out what is going on here. I had set:
> 
> debug_on_error(1)
> 
> so that in pkg.m, when it gets to:
> 
>   try
>     local_packages = load (local_list).local_packages;
>   catch
>     local_packages = {};
>   end_try_catch
> 
> it was throwing an error at the load line before the catch happened. Thus the error. When I
> turned debug_on_error off, the package installs fine.
> 
> I tested the behavior in ML. Consider a script, test2.m
> 
> clear all
> try
>  a(2)
> catch
>  'ccccccccccc'
> end
> a(3)
> 
> In ML, the output is:
> 
> >> test2
> ans =
> ccccccccccc
> ??? Index exceeds matrix dimensions.
> Error in ==> test2 at 7
> a(3)
> 7   a(3)
> K>> 
> 
> 
> So, ML ignores the equivalent of debug_on_error calls ("dbstop if error", BTW) when inside a
> try block.
> 
> 
> bb
> 
> 
> 

Dave,

Would the right thing to do here be do disable debug_on_error within a try block? I'm not
sure how hard that would be to do.

bb