From bug-octave-request at bevo dot che dot wisc dot edu Fri Nov 15 14:51:47 2002
Subject: Various points
From: "John W. Eaton" <jwe at bevo dot che dot wisc dot edu>
To: Remy Bruno <remy dot bruno at libertysurf dot fr>
Cc: bug-octave at bevo dot che dot wisc dot edu
Date: Fri, 15 Nov 2002 14:51:19 -0600

On 14-Nov-2002, Remy Bruno <remy dot bruno at libertysurf dot fr> wrote:

| I have some propositions to make octave even better, IMHO:
| * in liboctave/oct-shlib.cc: I added the option RTLD_GLOBAL to the call of the
|   function dlopen, because I made a .oct file that used other libraries (I
|   think it was for libalsa) that failed to load without this option

I've made this change.

| * in scripts/image/image.m: I added the option -raw to the arguments of the 
|   xv command (xv = sprintf ("xv -raw -expand %f %s", zoom, ppm_name);). Indeed,
|   I often use the image function to visualise matrices, and without this
|   option, xv adds blur to the image. But maybe the blur is a desired feature
|   for image()?

I've made this change.

| * when editing a command line (with readline), I often use CTRL-C to stop
|   editing the current line without erasing it. But CTRL-C kills all the xv
|   processes children of octave (but not the gnuplot processes) and even
|   sometimes makes octave exit, without dumping an octave-core (I didn't manage
|   to find out the precise conditions exactly)

I think this happens because signals are also sent to any child
processes.  I suppose xv responds to SIGINT by exiting.  If you don't
want that to happen, I suppose you could either fix xv, or wrap it in
a shell script that traps and ignores interrupts.

I have no way of debugging the cause of Octave exiting on interrupts
and without even creating an octave-core file unless you can provide
me with a precise set of instructions for reproducing the problem.

jwe



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