bug#19499: 11.88; preview-buffer with tikz and \newpage produces off by one image placement.

[Stephen Brennan]

When tikz is included and preview-buffer is run, the first math preview
after `\newpage' will have a blank preview image.  The subsequent image
will display the preview for the previous math expression, and so on.
For example, with this input file:

--- BEGIN EXAMPLE FILE
\documentclass{article}
\usepackage{tikz}
\begin{document}
$x^1$
\newpage
$x^2$
$x^3$
\end{document}
--- END EXAMPLE FILE

The preview for $x^1$ displays properly.  The preview for $x^2$ displays
a blank image, and the preview for $x^3$ displays an image of $x^2$.  If
you comment out the `\usepackage{tikz}' or the `\newpage', the previews
run correctly.

If you highlight a single expression and preview just the region, the
previews will display correctly.

I believe this was already reported a few months back in this [1]
thread.  However, that conversation went onto the topic of bug
trackers.  I checked debbugs, and that issue wasn't present, so I wanted
to make sure you are still aware of this issue.

[1]: http://lists.gnu.org/archive/html/bug-auctex/2014-06/msg00008.html

Emacs  : GNU Emacs 24.4.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.14.3)
 of 2014-10-21 on bitzer.hoetzel.info
Package: 11.88

current state:
==============
(setq
 AUCTeX-version "11.88"
 LaTeX-command-style '(("" "%(PDF)%(latex) %(extraopts) %S%(PDFout)"))
 image-types '(svg imagemagick png gif tiff jpeg xpm xbm pbm postscript)
 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 preview-gs-close))
                          (jpeg (open preview-gs-open) (place preview-gs-place)
                           (close preview-gs-close))
                          (pnm (open preview-gs-open) (place preview-gs-place)
                           (close preview-gs-close))
                          (tiff (open preview-gs-open) (place preview-gs-place)
                           (close preview-gs-close))
                          )
 preview-dvipng-image-type 'png
 preview-dvipng-command "dvipng -picky -noghostscript %d -o 
\"%m/prev%%03d.png\""
 preview-pdf2dsc-command "pdf2dsc %s.pdf %m/preview.dsc"
 preview-gs-command "/usr/bin/rungs"
 preview-gs-options '("-q" "-dDELAYSAFER" "-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.ps"
 preview-scale-function 'preview-scale-from-face
 preview-LaTeX-command '("%`%l \"\\nonstopmode\\nofiles\\PassOptionsToPackage{"
                         ("," . preview-required-option-list)
                         
"}{preview}\\AtBeginDocument{\\ifx\\ifPreview\\undefined"
                         preview-default-preamble "\\fi}\"%' %t")
 preview-required-option-list '("active" "tightpage" "auctex" 
(preview-preserve-counters "counters"))
 preview-preserve-counters nil
 preview-default-option-list '("displaymath" "floats" "graphics" "textmath" 
"sections" "footnotes")
 preview-default-preamble '("\\RequirePackage[" ("," . 
preview-default-option-list)
                            "]{preview}[2004/11/05]")
 preview-LaTeX-command-replacements nil
 preview-dump-replacements '(preview-LaTeX-command-replacements
                             ("\\`\\([^ ]+\\)\\(\\( +-\\([^ 
\\\\\"]\\|\\\\\\.\\|\"[^\"]*\"\\)*\\)*\\)\\(.*\\)\\'" "\\1 -ini 
-interaction=nonstopmode \"&\\1\" " preview-format-name ".ini \\5")
                             )
 preview-undump-replacements '(("\\`\\([^ ]+\\) .*? \"\\\\input\" \\(.*\\)\\'"
                                "\\1 -interaction=nonstopmode \"&" 
preview-format-name "\" \\2")
                               )
 preview-auto-cache-preamble 'ask
 preview-TeX-style-dir nil
 )

Output from running `/usr/bin/rungs -h':
GPL Ghostscript 9.15 (2014-09-22)
Copyright (C) 2014 Artifex Software, Inc.  All rights reserved.
Usage: gs [switches] [file1.ps file2.ps ...]
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: x11alpha
Available devices:
   alc1900 alc2000 alc4000 alc4100 alc8500 alc8600 alc9100 ap3250 appledmp
   atx23 atx24 atx38 bbox bit bitcmyk bitrgb bitrgbtags bj10e bj10v bj10vh
   bj200 bjc600 bjc800 bjc880j bjccmyk bjccolor bjcgray bjcmono bmp16 bmp16m
   bmp256 bmp32b bmpgray bmpmono bmpsep1 bmpsep8 ccr cdeskjet cdj1600 cdj500
   cdj550 cdj670 cdj850 cdj880 cdj890 cdj970 cdjcolor cdjmono cdnj500 cfax
   chp2200 cif cljet5 cljet5c cljet5pr coslw2p coslwxl cp50 cups declj250
   deskjet devicen dfaxhigh dfaxlow dj505j djet500 djet500c dl2100 dnj650c
   epl2050 epl2050p epl2120 epl2500 epl2750 epl5800 epl5900 epl6100 epl6200
   eplcolor eplmono eps2write eps9high eps9mid epson epsonc escp escpage
   faxg3 faxg32d faxg4 fmlbp fmpr fpng fs600 gdi hl1240 hl1250 hl7x0
   hpdj1120c hpdj310 hpdj320 hpdj340 hpdj400 hpdj500 hpdj500c hpdj510
   hpdj520 hpdj540 hpdj550c hpdj560c hpdj600 hpdj660c hpdj670c hpdj680c
   hpdj690c hpdj850c hpdj855c hpdj870c hpdj890c hpdjplus hpdjportable ibmpro
   ijs imagen inferno ink_cov inkcov itk24i itk38 iwhi iwlo iwlq jetp3852
   jj100 jpeg jpegcmyk jpeggray la50 la70 la75 la75plus laserjet lbp310
   lbp320 lbp8 lex2050 lex3200 lex5700 lex7000 lips2p lips3 lips4 lips4v
   lj250 lj3100sw lj4dith lj4dithp lj5gray lj5mono ljet2p ljet3 ljet3d ljet4
   ljet4d ljet4pjl ljetplus ln03 lp1800 lp1900 lp2000 lp2200 lp2400 lp2500
   lp2563 lp3000c lp7500 lp7700 lp7900 lp8000 lp8000c lp8100 lp8200c lp8300c
   lp8300f lp8400f lp8500c lp8600 lp8600f lp8700 lp8800c lp8900 lp9000b
   lp9000c lp9100 lp9200b lp9200c lp9300 lp9400 lp9500c lp9600 lp9600s
   lp9800c lps4500 lps6500 lq850 lxm3200 lxm5700m m8510 mag16 mag256
   md1xMono md2k md50Eco md50Mono md5k mgr4 mgr8 mgrgray2 mgrgray4 mgrgray8
   mgrmono miff24 mj500c mj6000c mj700v2c mj8000c ml600 necp6 npdl nullpage
   oce9050 oki182 oki4w okiibm oprp opvp paintjet pam pamcmyk32 pamcmyk4 pbm
   pbmraw pcl3 pcx16 pcx24b pcx256 pcx256 pcx2up pcxcmyk pcxgray pcxmono
   pdfwrite pdfwrite pdfwrite pgm pgmraw pgnm pgnmraw photoex picty180 pj
   pjetxl pjxl pjxl300 pkm pkmraw pksm pksmraw plan plan9bm planc plang
   plank planm png16 png16m png256 png48 pngalpha pnggray pngmono pnm pnmraw
   ppm ppmraw pr1000 pr1000_4 pr150 pr201 ps2write psdcmyk psdcmykog psdrgb
   pwgraster pxlcolor pxlmono r4081 rinkj rpdl samsunggdi sgirgb sj48
   spotcmyk st800 stcolor sunhmono t4693d2 t4693d4 t4693d8 tek4696 tiff12nc
   tiff24nc tiff32nc tiff48nc tiff64nc tiffcrle tiffg3 tiffg32d tiffg4
   tiffgray tifflzw tiffpack tiffscaled tiffsep tiffsep1 txtwrite uniprint
   x11 x11alpha x11cmyk x11cmyk2 x11cmyk4 x11cmyk8 x11gray2 x11gray4 x11mono
   xcf xes xpswrite
Search path:
   /home/stephen/.fonts : /usr/share/ghostscript/9.15/Resource/Init :
   /usr/share/ghostscript/9.15/lib :
   /usr/share/ghostscript/9.15/Resource/Font :
   /usr/share/ghostscript/fonts : /usr/share/fonts/Type1 : /usr/share/fonts
Ghostscript is also using fontconfig to search for font files
For more information, see /usr/share/ghostscript/9.15/doc/Use.htm.
Please report bugs to bugs.ghostscript.com.