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bug#5026: 23.1; add-hook buffer local vs single func
From: |
Kevin Ryde |
Subject: |
bug#5026: 23.1; add-hook buffer local vs single func |
Date: |
Tue, 24 Nov 2009 08:04:41 +1100 |
User-agent: |
Gnus/5.110011 (No Gnus v0.11) Emacs/23.1 (gnu/linux) |
Evaluating
(progn
(defvar foo nil)
(defun func1 ()
(error "this is func 1"))
(defun func2 ()
(message "this if func 2"))
(setq foo 'func1)
(add-hook 'foo 'func2
nil ;; prepend
t) ;; buffer-local
(run-hooks 'foo))
returns nil, where I expected the run-hooks to run both func2 and func1,
raising the error in func1.
The elisp manual under "Setting Hooks" says
`add-hook' can handle the cases where ... its value is
a single function;
but that doesn't seem to be so when extending a single function to a
buffer-local value.
I suspect it's run-hooks which should be blamed rather than add-hook.
Should run-hooks allow a single-function global value when it follows a
`t' from a local value?
I expect this arises only rarely. But if it does then it's a pretty
subtle way to miss out on a function you thought you had in a hook.
In GNU Emacs 23.1.1 (i486-pc-linux-gnu, GTK+ Version 2.16.5)
of 2009-09-14 on raven, modified by Debian
configured using `configure '--build=i486-linux-gnu' '--host=i486-linux-gnu'
'--prefix=/usr' '--sharedstatedir=/var/lib' '--libexecdir=/usr/lib'
'--localstatedir=/var/lib' '--infodir=/usr/share/info'
'--mandir=/usr/share/man' '--with-pop=yes'
'--enable-locallisppath=/etc/emacs23:/etc/emacs:/usr/local/share/emacs/23.1/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/23.1/site-lisp:/usr/share/emacs/site-lisp:/usr/share/emacs/23.1/leim'
'--with-x=yes' '--with-x-toolkit=gtk' '--with-toolkit-scroll-bars'
'build_alias=i486-linux-gnu' 'host_alias=i486-linux-gnu' 'CFLAGS=-DDEBIAN -g
-O2' 'LDFLAGS=-g' 'CPPFLAGS=''
Important settings:
value of $LC_ALL: nil
value of $LC_COLLATE: nil
value of $LC_CTYPE: nil
value of $LC_MESSAGES: nil
value of $LC_MONETARY: nil
value of $LC_NUMERIC: nil
value of $LC_TIME: nil
value of $LANG: en_AU
value of $XMODIFIERS: nil
locale-coding-system: iso-latin-1-unix
default-enable-multibyte-characters: t
- bug#5026: 23.1; add-hook buffer local vs single func,
Kevin Ryde <=