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Re: [AUCTeX-devel] This ascender bug in dvipng mode...
From: |
Jan-Åke Larsson |
Subject: |
Re: [AUCTeX-devel] This ascender bug in dvipng mode... |
Date: |
Mon, 04 Apr 2005 21:36:12 +0200 |
User-agent: |
Debian Thunderbird 1.0 (X11/20050116) |
David Kastrup wrote:
Well, actually I think that
7{currentfile token not{stop}if 65781.76 div
should be a dead giveaway if you find a way to search for it
efficiently. It fishes 7 numeric tokens from the PostScript file
itself and converts them into TeX units. I think this has always been
in this form in preview-latex.
Correct. And the code just after this snippet has changed. dvipng now
tests for "!userdict" followed by
"7{currentfile token not{stop}if 65781.76 div", in addition to
"!(preview version-string)" followed by "(tightpage)"
The previous test used a long string, which should match the \special
exactly. I suppose (given my minimal Postscript knowledge) that the
following might give the "right" Postscript:
\special{!(}
\special{!userdict begin/bop-hook{7{currentfile token not{stop}if
65781.76 div DVImag mul}repeat 72 add 72 2 copy gt{exch}if 4 2 roll neg
2 copy lt{exch}if dup 0 gt{pop 0 exch}{exch dup 0 lt{pop 0}if}ifelse 720
add exch 720 add 3 1 roll 4{5 -1 roll add 4 1 roll}repeat <</PageSize[5
-1 roll 6 index sub 5 -1 roll 5 index sub]/PageOffset[7 -2 roll [1 1
dtransform exch]{0 ge{neg}if exch}forall]>>setpagedevice//bop-hook
exec}bind def end}
\special{!)pop}
But that depends on what dvips does to the specials, I guess. In any
case, the string in the middle special is the one used by dvipng<=1.5 to
identify tightpage mode. Any newlines in the string, generated by mail
transfer should be single spaces.
I have prepared for the release, but I'll wait until I get a "go" from
you. I might want to add code to avoid "ignored header" messages for the
surrounding "(...)pop" if you decide to use the above approach.
/JÅ
- Re: [AUCTeX-devel] This ascender bug in dvipng mode..., (continued)
- 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
- 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...,
Jan-Åke Larsson <=