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[AUCTeX] preserving images, and image contrast

From: Rajneesh Hegde
Subject: [AUCTeX] preserving images, and image contrast
Date: Thu, 2 Jun 2005 03:50:14 +0000 (UTC)
User-agent: Loom/3.14 (

I had two questions about preview-latex:

1. Currently, when I kill emacs, all the preview images (and IIRC, the .efmt
file too), are deleted. I have customized the auto-cache variable to be on, but
I suppose the cache is only on a per-session basis? Is there a way to make
previe-latex not delete all those images at the end of the session? If the
previews are up-to-date (or even reasonably so) at the end of the session, I'd
like a way to reuse them at the next start-up, instead of going through the
whole thing again.

2. Currently, images for inline math are low on contrast, and somewhat blurry. I
compensate for that somewhat by setting preview-scale-function to the number
1.25. Even so, I'd be interested to know a way to address the problem directly.
(The background for my default face in emacs is beige, but the problems persist
even for a white background.)

This is on CVS emacs (precompiled binary from running on WinXP.


Here's the state info, in case it's useful. sorry for any bad indentation, gmane
complains if any lines are longer than 80 characters(?!). I tried filling it
sensibly in emacs before posting, but didn't do a very good job.

Emacs  : GNU Emacs (i386-mingw-nt5.1.2600)
 of 2005-04-16 on LAPTOP
Package: rel-0-9-1

current state:

Output from running `gswin32c -h':
AFPL Ghostscript 8.51 (2005-04-18)
Copyright (C) 2005 artofcode LLC, Benicia, CA.  All rights reserved.
Usage: gs [switches] [ ...]
Most frequently used switches: (you can use # in place of =)
 -dNOPAUSE           no pause after page   | -q       `quiet', fewer messages
 -g<width>x<height>  page size in pixels   | -r<res>  pixels/inch resolution
 -sDEVICE=<devname>  select device         | -dBATCH  exit after last file
 -sOutputFile=<file> select output file: - for stdout, |command for pipe,
                                         embed %d or %ld for page #
Input formats: PostScript PostScriptLevel1 PostScriptLevel2
PostScriptLevel3 PDF
Default output device: display
Available devices:
   bbox bit bitcmyk bitrgb bj10e bj200 bjc600 bjc800 bmp16 bmp16m bmp256
   bmp32b bmpgray bmpmono bmpsep1 bmpsep8 cdeskjet cdj550 cdjcolor cdjmono
   declj250 deskjet devicen display djet500 djet500c eps9high eps9mid epson
   epsonc epswrite ibmpro ijs jetp3852 jpeg jpeggray laserjet lbp8 lj250
   ljet2p ljet3 ljet3d ljet4 ljet4d ljetplus m8510 mswindll mswinpr2 necp6
   nullpage pbm pbmraw pcx16 pcx24b pcx256 pcxcmyk pcxgray pcxmono pdfwrite
   pgm pgmraw pgnm pgnmraw pj pjxl pjxl300 pkmraw png16 png16m png256
   pngalpha pnggray pngmono pnm pnmraw ppm ppmraw psdcmyk psdrgb psmono
   pswrite pxlcolor pxlmono r4081 spotcmyk st800 stcolor t4693d2 t4693d4
   t4693d8 tek4696 tiff12nc tiff24nc tiff32nc tiffcrle tiffg3 tiffg32d
   tiffg4 tiffgray tifflzw tiffpack tiffsep uniprint
Search path:
   . ; D:\Programs\ghostgum\gs\gs8.51\lib ; D:\Programs\ghostgum\gs\fonts ;
   D:\Programs\ghostgum\gs\gs8.51\Resource ; c:/gs/gs8.51/lib ;
   c:/gs/gs8.51/Resource ; c:/gs/fonts
For more information, see c:/gs/gs8.51/doc/Use.htm.
Report bugs to address@hidden, using the form in Bug-form.htm.

 AUC-TeX-version "11.55"
 LaTeX-command-style '(("" "%(PDF)%(latex) %S%(PDFout)"))
 image-types '(png tiff jpeg xpm xbm pbm)
 preview-image-type 'png

 preview-image-creators '((dvipng (open preview-gs-open
 preview-dvipng-process-setup) (place preview-gs-place)
                           (close preview-dvipng-close))
                          (png (open preview-gs-open) (place
                          preview-gs-place) (close
                          (jpeg (open preview-gs-open) (place
                          preview-gs-place) (close
                          (pnm (open preview-gs-open) (place
                          preview-gs-place) (close
                          (tiff (open preview-gs-open) (place
                          preview-gs-place) (close

 preview-dvipng-image-type 'png
 preview-dvipng-command "dvipng -picky -noghostscript %d -o
 preview-pdf2dsc-command "pdf2dsc %s.pdf %m/preview.dsc"
 preview-gs-command "gswin32c"
 preview-gs-options '("-q" "-dSAFER" "-dNOPAUSE" "-DNOPLATFONTS"
 "-dPrinted" "-dTextAlphaBits=4" "-dGraphicsAlphaBits=4")
 preview-gs-image-type-alist '((png png "-sDEVICE=png16m") (dvipng png
 "-sDEVICE=png16m") (jpeg jpeg "-sDEVICE=jpeg") (pnm pbm
 "-sDEVICE=pnmraw") (tiff tiff "-sDEVICE=tiff12nc"))
 preview-fast-conversion t
 preview-prefer-TeX-bb nil
 preview-dvips-command "dvips -Pwww -i -E %d -o %m/preview.000"
 preview-fast-dvips-command "dvips -Pwww %d -o %m/"
 preview-scale-function 1.25
 preview-LaTeX-command '("%l
                         ("," . preview-required-option-list)
 preview-required-option-list '("active" "tightpage" "auctex")
 preview-default-option-list '("displaymath" "floats" "graphics"
 "textmath" "sections" "footnotes") preview-default-preamble
 '("\\RequirePackage[" ("," . preview-default-option-list)
 preview-LaTeX-command-replacements nil
 preview-dump-replacements '(preview-LaTeX-command-replacements
                             ("\\`\\([^ ]+\\)\\(\\( -\\([^
                             "\\1 -ini \"&\\1\" " preview-format-name
                             ".ini \\5") )
 preview-undump-replacements '(("\\`\\([^ ]+\\)\\(\\( -\\([^
                                "\\1 \"&" preview-format-name "\"
                                \\5") )
 preview-auto-cache-preamble t

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