file-coding-system-alist and shell endless loop problem

[William Xu]

Hi all,

I find that `M-x shell' would end in some endless loop when
`file-coding-system-alist' has been set to something like

,----
| (setq file-coding-system-alist
|       '(("\\.dz\\'" no-conversion . no-conversion)
|       ("\\.g?z\\(~\\|\\.~[0-9]+~\\)?\\'" no-conversion . no-conversion)
|       ;; [...]
|       ("" utf-8 . utf-8)))
`----

namely, set the default coding system for file I/O operation to
utf-8.

If i replace it with some other values, like undecided(the default
value), gb2312, etc. It has no such problem.

Emacs is built from cvs 20070515.


        William