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Re: [AUCTeX-devel] This ascender bug in dvipng mode...
From: |
David Kastrup |
Subject: |
Re: [AUCTeX-devel] This ascender bug in dvipng mode... |
Date: |
Sun, 03 Apr 2005 17:44:01 +0200 |
User-agent: |
Gnus/5.11 (Gnus v5.11) Emacs/22.0.50 (gnu/linux) |
Jan-Åke Larsson <address@hidden> writes:
> David Kastrup wrote:
>> I now take care that the tightpage special does not show a negative
>> depth. This should make sure that superscripts like $^1$ get
>> displayed properly. It doesn't. For some reason, the tightpage lower
>> edge, in spite of being 0, does not get registered by dvipng. dvipng
>> still orients itself at the lower edge of the glyph.
>
> I knew I should have looked into this more thouroghly. I coded the
> tightpage code in dvipng to do exactly the same thing as your Postscript
> snippet, so it does do everything you want. You can just as well revert
> that last change, sorry for that extra work. The _real_ problem is that
> 'tightpage' is identified by looking at the postscript header at the
> beginning of the DVI and that changed in revision 1.65 of preview.dtx
> (before 0.7.3) with the innocent-looking log entry "Code cosmetics". In
> a preview-latex run there is now an ignored PS header in the DVI and no
> message "Preview-latex tightpage option detected". dvipng simply reverts
> to the default behaviour.
It is definitely a pity that we now have had two releases quite
unnecessarily which don't work properly with dvipng.
> Since this code may change again, may I suggest a -T tightpage
> option to dvipng?
That won't help us with past dvipng releases. And whether the
tightpage option actually is turned on depends on the version of
preview.sty and stuff: we detect its presence from parsing the log
output. And the combination tightpage/dvipng is used not only in
preview-latex...
So I am afraid this is something we need to address in preview.dtx as
fast as possible, regardless of whether you introduce a -T tightpage
option.
What heuristic do you exactly employ for detecting preview-latex? It
is quite likely possible to document this in preview.dtx so that it
won't get changed accidentally again. We should have communicated
better about that previously.
--
David Kastrup, Kriemhildstr. 15, 44793 Bochum
- [AUCTeX-devel] This ascender bug in dvipng mode..., David Kastrup, 2005/04/02
- Re: [AUCTeX-devel] This ascender bug in dvipng mode..., Jan-Åke Larsson, 2005/04/03
- Re: [AUCTeX-devel] This ascender bug in dvipng mode...,
David Kastrup <=
- Re: [AUCTeX-devel] This ascender bug in dvipng mode..., Jan-Åke Larsson, 2005/04/03
- Re: [AUCTeX-devel] This ascender bug in dvipng mode..., Jan-Åke Larsson, 2005/04/03
- Re: [AUCTeX-devel] This ascender bug in dvipng mode..., David Kastrup, 2005/04/04
- Re: [AUCTeX-devel] This ascender bug in dvipng mode..., Jan-Åke Larsson, 2005/04/04
- Re: [AUCTeX-devel] This ascender bug in dvipng mode..., David Kastrup, 2005/04/04
- Re: [AUCTeX-devel] This ascender bug in dvipng mode..., Jan-Åke Larsson, 2005/04/04
- Re: [AUCTeX-devel] This ascender bug in dvipng mode..., David Kastrup, 2005/04/04
- Re: [AUCTeX-devel] This ascender bug in dvipng mode..., Jan-Åke Larsson, 2005/04/04
- Re: [AUCTeX-devel] This ascender bug in dvipng mode..., David Kastrup, 2005/04/04
- Re: [AUCTeX-devel] This ascender bug in dvipng mode..., Jan-Åke Larsson, 2005/04/04