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        Thu, 21 Jan 2016 08:20:01 -0800 (PST)
Date: Thu, 21 Jan 2016 19:19:58 +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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On Thu, Jan 21, 2016 at 03:41:42PM +0100, karl AT aspodata DOT se wrote:
...
> > Obviously, the script mistakenly assumes that the cache dir already
> > exist.
> ...
> 
> I don't mind that.
> 
> > If anybody want to do the same things in C, please do, it is doable,
> > and we'll compare results ;)
> 
> I published a patch
> 
>  http://archives.seul.org/geda/user/May-2011/msg00556.html
> 
> in c to allow the equiv. of 
> 
>  (component-library-search "/Net/cvs/cvs.gedasymbols.org/www/user" "cvs")
> 
> a few years ago. That patch was NAK'ed by P.Brett. Later someone
> else implemented the same thing in scheme, see link below and followups:
> 
>  http://www.delorie.com/archives/browse.cgi?p=geda-user/2011/11/29/10:18:18

Karl, please, no. Don't compare static C string "CVS" compiled in the
code of the program, which you've proposed, with the hi-level Scheme
function taking any argument. Peter Brett, IIUC, has apparently meant
this.

> 
> So to make this script in c I'll have to go through scheme anyhow,
> putting c at a disadvantage.
> 
> So my point is that c is treated like the "cousin from the country" as 
> we say here in Sweden. And the ability to do things in c is affected by 
> that, and any comparison wouldn't be fair.

No, I don't think so. Look, I like C very much, and most of my
contributions so far have been done in C. However, we will never
compare Scheme and C, as we wouldn't compare C and inline assembler. C
is a great language which nevertheless is not a silver bullet. It has
its own limitations.

> ///
> 
> Log window:
> 
> ==============
> Backtrace:
> In unknown file:
>    ?:  0* [invoke-macro "(cache-symbols)"]
> In /usr/local/share/gEDA/system-gschemrc:
>  707:  1  [gschem-log ...
>  707:  2* [simple-format #f "~s
> " ...
>  707:  3* [eval-string-protected "(cache-symbols)"]
> In unknown file:
>    ?:  4* [eval-string "(cache-symbols)"]
>    1:  5* [cache-symbols]
> In /home/karl/.gEDA/cache-symbols.scm:
>   60:  6  [for-each #<procedure cache-page-symbols (page)> (#<geda-page 0x8ba3000>)]
> In unknown file:
>    ?:  7* [cache-page-symbols #<geda-page 0x8ba3000>]
> In /home/karl/.gEDA/cache-symbols.scm:
>   54:  8* [for-each #<procedure cache-symbol #> #]
> In unknown file:
>    ?:  9* [cache-symbol "78xx.sym"]
> In /home/karl/.gEDA/cache-symbols.scm:
>   36: 10* (let ((page #) (component #)) (close-page! (page->file # #)))
>   38: 11  [%close-page! ...
>   39: 12* [page->file #<geda-page 0x8e8ba80> ...
>   44: 13* [get-cache-name "78xx.sym"]
>   22: 14  [string-append "sym_cache" ...
> 
> /home/karl/.gEDA/cache-symbols.scm:22:3: While evaluating arguments to string-append in expression (string-append cache-dir-name file-name-separator-string ...):
> /home/karl/.gEDA/cache-symbols.scm:22:3: Unbound variable:
> file-name-separator-string

Here.

You see, the function 'file-name-separator-string' doesn't work. It's
a stock guile 2.0 function. What's your version of guile? And what's
your version of geda-gaf?

> #f
> More than one component found with name [78xx.sym]
> ==============
> 
> Yes, mult. symbols with the same name is a problem. Just have a
> look at cvs.gedasymbols.org.

It's another question.

Cheers,
  Vladimir