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        Fri, 22 Jan 2016 09:13:33 -0800 (PST)
Date: Fri, 22 Jan 2016 20:13:30 +0300
From: "Vladimir Zhbanov (vzhbanov AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
To: geda-user AT delorie DOT com
Subject: Re: [geda-user] should we broaden scope of libgeda
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Karl,

On Fri, Jan 22, 2016 at 12:06:32PM +0100, karl AT aspodata DOT se wrote:
...
> > IMO, 3 is the consequence of non-2. It is much more easy for
> > mere gEDA user to change order of looking through the directories
> > in rc-files (which are Scheme code) rather than in C code.
> 
> a, I asked about 3 in
> 
>    http://archives.seul.org/geda/user/May-2011/msg00646.html
> 
>    and provided a way to sort the list.

OK, I have seen that.

> 
> b, And I still don't understand why libgeda adds component-libs in reverse 
>    order of appearance in rc file. If ordering is important, order in 
>    sym-browser should be the same as order in rc file

Probably for the same reason for which gschem opens first the last
specified file? I would better fix this in Scheme by doing just
(reverse file-list) rather than in gschem.c. Now, as I know Scheme
a little, I consider hacking C code much more difficult, if we
would not count trivial cases which are simple in both languages,
of course. Another reason is probably no one has filed a bug
report on this yet?

> 
> c, It cannot be that difficult to provide a way to change order "after 
>    the fact" so to say
> 
> > We should make things simpler for users, right?
> 
> Simple and better means differnt things in different contexts.
> I think the goal should be
> . respect the local users way of working
> . don't place obstacles in his/her way
> and such.

Sure

> 
> > OTOH, I don't think that even glib is simpler than guile or less
> > error-prone. However, it also depends on what you already know.
> 
> Don't know much about glib, except they have the now redundant types 
> gint etc. instead of stdint.h, and that when malloc fails they abort().
> abort() makes glib off limits for daemon developments and therefore I
> haven't worked with it.
> 
> How does guile handle out of mem. condition ?

It uses garbage collector and frees developer from memory
management. OTOH, it has other mechanisms to avoid such
conditions, e.g. tail call recursion instead of the plain one. As
many of modern toplevel languages it has exception handling and I
believe, if such a condition would be met, guile will throw an
exception.

Cheers,
  Vladimir