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bug#57566: 13.1.4; Disappearing content when previewing inline math with

From: Braun, Michael
Subject: bug#57566: 13.1.4; Disappearing content when previewing inline math with LuaTeX
Date: Sat, 3 Sep 2022 18:40:09 +0000

I am experiencing  an issue using preview-latex with LuaTeX.  The problem 
relates to this part of the documentation for preview-at-point:  "The 
surroundings don’t extend into unmodified previews or past contiguous previews 
invalidated by modifications."  I am finding that they actually do.

Here's a MWE:


AA $\alpha$ BB $\beta$ GG $\gamma$ DD $\Delta$.


Let's say I open this file and (preview-buffer).    Then, I click on the gamma 
symbol (which auto-reveals), edit the preview area to $\gamma + 1$, and  run 
(preview-at-point).  The $\gamma+1$ renders correctly, but everything up to, 
but not including, AA disappears.  So all I see is "AA <\gamma+1> DD <\Delta>" 
(where < ... > is the rendered math expression).

The "$\alpha$ BB $\beta$ GG" is now hidden under the preview area for 
<gamma+1>.  I need to (preview-clearout-at-point) to get it all back.  It looks 
like when preview looks backwards, it is indeed extending through all 
unmodified previews back to the beginning of the line, but is showing only the 
rightmost preview that I edited.

It is also extending past contiguous previews invalidated by modifications.  
Say I edit both $\gamma$ and $\Delta$, and then preview-at-point.  Both the 
\gamma and \delta  are rendered, but "$\alpha$ BB $\beta$ GG" is now hidden 
under the preview area for <gamma>.

The  workaround is to  (preview-clearout-at-point)  before editing any inline 
math.  But it is an extra step, and I would be surprised if this is intended 

I am  using TeX Live 2022 (on Mac OS 12.5.1) and AucTeX 13.1.4, although have 
noticed this behavior for well over a  year.  I use Aquamacs 3.6  (based on 
emacs 25.3), but I can replicate it on Emacs 29. I do not have this problem 
with pdftex or xetex, but since it's behavior using an AucTeX function, this 
list seems like the right place to go.



Emacs  : Aquamacs 3.6  GNU Emacs (x86_64-apple-darwin20.6.0, NS 
appkit-2022.60 Version 11.6 (Build 20G165))
dated 2021-12-24 rev. 04752ba87a8f3f0677e904e833a1cef8fe38897a
Package: 13.1.4

current state:
AUCTeX-version "13.1.4"
LaTeX-command-style '(("" "%(PDF)%(latex) %(file-line-error) %(extraopts) 
%(output-dir) %S%(PDFout)"))
image-types '(svg png gif 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 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 %(O?pdf) %m/preview.dsc"
preview-gs-command "/usr/local/bin/gs"
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 
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 'mb-preview-scale
preview-LaTeX-command '("%`%l \"\\nonstopmode\\nofiles\\PassOptionsToPackage{" 
("," . preview-required-option-list)
                         "\\fi}\"%' \"\\detokenize{\" %(t-filename-only) \"}\"")
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" "showlabels")
preview-default-preamble '("\\RequirePackage[" ("," . 
preview-default-option-list) "]{preview}[2004/11/05]")
preview-LaTeX-command-replacements nil
preview-dump-replacements '(preview-LaTeX-command-replacements
                             ("\\`\\([^ ]+\\)\\(?: +\\(?:\\(--?kanji[= ][^ 
]+\\)\\|\\(--?output-directory[= ][^ ]+\\)\\|-\\(?:[^ 
\\\"]\\|\\\\.\\|\"[^\"]*\"\\)*\\)\\)*\\(.*\\)\\'" "\\1 -ini \\2 \\3 
-interaction=nonstopmode \"&\\1\" " preview-format-name ".ini \\4")
preview-undump-replacements '(("\\`\\([^ ]+\\)\\(?: +\\(?:\\(--?kanji[= ][^ 
]+\\)\\|\\(--?output-directory[= ][^ ]+\\)\\|-\\(?:[^ 
\\\"]\\|\\\\.\\|\"[^\"]*\"\\)*\\)\\)*.* \"\\\\input\" \"\\\\detokenize{\" 
\\(.*\\) \"}\"\\'" "\\1 \\2 \\3 -interaction=nonstopmode -file-line-error " 
preview-format-name " \"/AUCTEXINPUT{\" \\4 \"}\"")
preview-auto-cache-preamble nil
preview-TeX-style-dir "/Users/braunm/Library/Preferences/Aquamacs 

Output from running `/usr/local/bin/gs -h':
GPL Ghostscript 9.55.0 (2021-09-27)
Copyright (C) 2021 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 cups declj250 deskjet
   devicen dfaxhigh dfaxlow display dj505j djet500 djet500c dl2100 dnj650c
   docxwrite 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 hocr 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
   md1xMono md2k md50Eco md50Mono md5k mgr4 mgr8 mgrgray2 mgrgray4 mgrgray8
   mgrmono miff24 mj500c mj6000c mj700v2c mj8000c ml600 necp6 npdl nullpage
   oce9050 ocr oki182 oki4w okiibm oprp opvp paintjet pam pamcmyk32 pamcmyk4
   pbm pbmraw pcl3 pclm pcx16 pcx24b pcx256 pcxcmyk pcxgray pcxmono
   pdfimage24 pdfimage32 pdfimage8 pdfocr24 pdfocr32 pdfocr8 pdfwrite pgm
   pgmraw pgnm pgnmraw photoex picty180 pj pjetxl pjxl pjxl300 pkm pkmraw
   pksm pksmraw plan plan9bm planc plang plank planm plib plibc plibg plibk
   plibm png16 png16m png256 png48 pngalpha pnggray pngmono pngmonod pnm
   pnmraw ppm ppmraw pr1000 pr1000_4 pr150 pr201 ps2write psdcmyk psdcmyk16
   psdcmykog psdrgb psdrgb16 pwgraster pxlcolor pxlmono r4081 rinkj rpdl
   samsunggdi sj48 spotcmyk st800 stcolor t4693d2 t4693d4 t4693d8 tek4696
   tiff12nc tiff24nc tiff32nc tiff48nc tiff64nc tiffcrle tiffg3 tiffg32d
   tiffg4 tiffgray tifflzw tiffpack tiffscaled tiffscaled24 tiffscaled32
   tiffscaled4 tiffscaled8 tiffsep tiffsep1 txtwrite uniprint x11 x11alpha
   x11cmyk x11cmyk2 x11cmyk4 x11cmyk8 x11gray2 x11gray4 x11mono x11rg16x
   x11rg32x xcf xes xpswrite
Search path:
   /usr/local/share/ghostscript/9.55.0/Resource/Init :
   /usr/local/share/ghostscript/9.55.0/lib :
   /usr/local/share/ghostscript/9.55.0/Resource/Font :
   /usr/local/share/ghostscript/fonts :
   /usr/local/share/fonts/default/ghostscript :
   /usr/local/share/fonts/default/Type1 :
   /usr/local/share/fonts/default/TrueType : /usr/lib/DPS/outline/base :
   /usr/openwin/lib/X11/fonts/Type1 : /usr/openwin/lib/X11/fonts/TrueType :
For more information, see /usr/local/share/doc/ghostscript/9.55.0/Use.htm.
Please report bugs to bugs.ghostscript.com.

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