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Re: 22.1.50; newsticker and buffer-invisibility-spec:
From: |
Ulf Jasper |
Subject: |
Re: 22.1.50; newsticker and buffer-invisibility-spec: |
Date: |
Sat, 25 Aug 2007 17:32:04 +0200 |
User-agent: |
Gnus/5.11 (Gnus v5.11) Emacs/22.1 (gnu/linux) |
> "T. V. Raman" <address@hidden> writes:
>> Its bizarre use of buffer-invisibility-spec was triggering a bug
>> in the context of Emacspeak. I've fixed my code to work around it
>> -- but it would be good to get newsticker fixed up to match
>> emacs' use of buffer-invisibility-spec.
Newsticker sets `buffer-invisibility-spec´ to a list like '(ATOM1
ATOM2 ... ATOMn). It also sets the 'invisible text property to a list
like ´(ATOMi ... ATOMk). If I understand the Elisp manual (for GNU
Emacs 22.1) correctly,
----------------------------------------------------------------------
-- Variable: buffer-invisibility-spec
This variable specifies which kinds of `invisible' properties
actually make a character invisible. Setting this variable makes
it buffer-local.
`t'
A character is invisible if its `invisible' property is
non-`nil'. This is the default.
a list
Each element of the list specifies a criterion for
invisibility; if a character's `invisible' property fits any
one of these criteria, the character is invisible. The list
can have two kinds of elements:
`ATOM'
A character is invisible if its `invisible' property
value is ATOM or if it is a list with ATOM as a member.
`(ATOM . t)'
A character is invisible if its `invisible' property
value is ATOM or if it is a list with ATOM as a member.
Moreover, if this character is at the end of a line and
is followed by a visible newline, it displays an
ellipsis.
----------------------------------------------------------------------
the usage of `buffer-invisibility-spec' and the 'invisible text
property is valid. In which case it is not "bizarre", not even "odd".
Ulf
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