Re: [Geiser-users] Leaving the REPL-buffer: Warnings about coding systems

[Jose A. Ortega Ruiz]

Hi,

On Sun, Sep 30 2012, Dr. Ludwig Meier wrote:

> Hello everybody,
>
> when I am leaving Guile in the REPL-buffer by ,q or (exit), Emacs
> yields following warning and promts for selecting a coding system:
>
> ;;;;;;;;;;;;;;;;;;;;
>
> These default coding systems were tried to encode "(run-serve...":
>   (utf-8-unix (6866 . 4194243) (6867 . 4194204) (6909 . 4194243) (6910
>   . 4194204) (6957 . 4194243) (6958 . 4194204) (8949 . 4194243) (8950
>   . 4194204) (8982 . 4194243) (8983 . 4194204) (9024 . 4194243))
> However, each of them encountered characters it couldn't encode:
>   utf-8-unix cannot encode these: \303 \234 \303 \234 \303 \234 \303
> \234 ...
>
> Select coding system (default raw-text):
>
> ;;;;;;;;;;;;;;;;;;;;
>
> Killing the buffer after leaving Guile yields the message
> again. Emacs’ language environment is set to UTF-8. I am using the
> recent Version 0.2.2 installed via ELPA on Emacs 24.2 (Ubuntu 12.04),

I have a very similar setup (except this is Debian), and never seen this
before.  What version of Guile are you using?  Did you customize any
Geiser setting?

The error above usually makes the offending characters clickable and one
can follow them and go to the buffer where they are: is that the case
for you? If so, in what buffer are those characters?

Does this happen in fresh new REPLs without any ouput, or only when
there has been some interaction?

Does moving ~/.geiser_history.guile away fix the problem? (that's the
file where the REPL history is automatically saved; if it got corrupted
somehow and cannot be saved in UTF-8, one would get a message like yours
on closing the REPL, because then the history is written down to disk).

Cheers,
jao
-- 
You err by thinking simplicity and elegance are mostly
cosmetic.  Simplicity and elegance are overwhelmingly
practical virtues.
  - William D Clinger, comp.lang.scheme