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From: ShengHuo ZHU <zsh@cs.rochester.edu>
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Subject: Re: problem whith abbrevs in message-mode
Date: Wed, 23 Jan 2002 22:29:22 -0500
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Harry Putnam <reader@newsguy.com> writes:

[...]

> I see an error when trying to enter a new abbrev while in message-mode
> but not other modes.
>
> For example:
> In the buffer, if I type abbrv_this and then the command `C-x a +'
>
> I get this error: add-mode-abbrev: No per-mode abbrev table
>
> Including backtrace here:
>
> Debugger entered--Lisp error: (error "No per-mode abbrev table")
>   signal(error ("No per-mode abbrev table"))
>   error("No per-mode abbrev table")
>   add-mode-abbrev(1)
>   call-interactively(add-mode-abbrev)
>
> If I temporarily change the major-mode to text, the error disappears
> and the command works.
>
> Calling M-x edit-abbrevs   I see:
>
> (message-mode-abbrev-table)
>
> "keyz"	       0    "Keywords:"
> "hped"	       0    "[NOTE: -ed HP"

I can not reproduce the bug. But maybe some settings make the
difference.  Your post is from oGnus and Emacs 21.1, therefore I guess
you produced this bug in the setting. message-mode is defined by
define-derived-mode in oGnus, but by defun in Gnus 5.9. Also, Stefan
Monnier's change on 2001-11-20 could make the difference.

I am not familiar with define-derived-mode, abbrev, mailabbrev, or
mail-abbrevs. Help?!

BTW, message-mode-abbrev-table is not (explicitly) defined in
message.el.  Is it a problem?

ShengHuo