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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] Gschem refdes autonumber over multiple pages?
Date: Thu, 02 May 2024 00:02:36 +0300
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Hi Richard,

"Richard Rasker (rasker AT linetec DOT nl) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com> writes:
...
> Yes, this works, great! Although right now it just outputs a list of numbers, and I haven't found out how to add something like Rfree= to the
> number for the R prefix. 
>
>  If you want to see its output, say, in the log window (e.g. in case you
> don't use any terminal for launching the GUI), you'll have to replace
> the "(display ...)" commands with something like
>   (log! 'message "Counter for R is ~A\n" (lookup-counter-by-prefix "R"))
>
> Hm, that doesn't seem to work yet. Here's what happens in gschem's Status Dock:
>
> Executing guile script [/home/richard/scripts/refdes-counter.scm]
>
> Tracing:
>            6 (apply-smob/1 #<catch-closure 564014dc1220>)
>            5 (apply-smob/1 #<catch-closure 56401672f6a0>)
> In ice-9/eval.scm:
>    202:27  4 (_ #f)
>    223:20  3 (proc #<directory (guile-user) 564014e55140>)
> In unknown file:
>            2 (%resolve-variable (7 . log!) #<directory (guile-user) …>)
> In ice-9/boot-9.scm:
>    751:25  1 (dispatch-exception 0 unbound-variable (#f "Unbound …" …))
> In unknown file:
>            0 (apply-smob/1 #<catch-closure 56401672f660> # #f "Unbo…" …)
>
> ERROR: In procedure apply-smob/1:
> Unbound variable: log!
>
> So from the Guile Reference I assume that I need to define log!, is that correct?

Not really, you have to import the module (geda log), I think.
Something like this:
(use-modules (srfi srfi-1)
             (geda log)  ; <= This one
             (geda page)
             (geda object)
             (geda attrib))

HTH,
  Vladimir