preview-latex (was: Re: AUCTeX 12.2 released)

[Joost Kremers]

On Fri, Nov 01 2019, Ikumi Keita wrote:
> > > > > > Joost Kremers <address@hidden> writes:
>
> > I have gs 9.26, but with  `preview-pdf-color-adjust-method' set 
> > to
> > `compatible', I don't get any images at all. Or, more 
> > precisely, I get
> > blank images of maybe 2x2cm, see first screenshot:
>
> Doesn't a redisplay (typing C-l) make the expected image appear 
> there?
> I sometimes get similar blank rectangles and they turn into 
> expected
> images when I type C-l.  (Though my gs is not 9.26, I expect it 
> doesn't
> make difference.)

No, unfortunately it doesn't. I just checked the _region_.prv/ 
directory where the images should reside, and all there is is a 
single preview.dsc file. When `preview-pdf-color-adjust-method` is 
set to t, it contains a bunch of png files.

So it seems that for some reason the conversion from dsc to png 
doesn't work. I included the output of `C-c C-p C-b` in both cases 
below. The only difference seems to be the `-dDELAYBIND` argument 
passed to `rungs`.

The preview.dsc file that's created in the bad case 
(preview-pdf-color-adjust-method) seems far too small to contain 
any useful information (I included it below as well), but because 
the preview.dsc file seems to be deleted in a successful run, I 
can't compare the two.

HTH

Joost



Bad:

========================================

TeX Output exited as expected with code 1 at Fri Nov  1 14:08:59
Running `Preview-PDF2DSC' with ``pdf2dsc _region_.pdf 
_region_.prv/tmpIP7VXy/preview.dsc''

Preview-PDF2DSC finished at Fri Nov  1 14:08:59
Running `Preview-Ghostscript' with 
``/usr/local/texlive/2019/bin/x86_64-linux/rungs 
-sOutputFile\=_region_.prv/tmpIP7VXy/pr1-\%d.png -q -dDELAYSAFER 
-dNOPAUSE -DNOPLATFONTS -dPrinted -dTextAlphaBits\=4 
-dGraphicsAlphaBits\=4 -sDEVICE\=png16m -r134.249x134.309''

Preview-Ghostscript finished at Fri Nov  1 14:08:59

========================================

Good:

========================================

Tex Output exited as expected with code 1 at Fri Nov  1 14:10:27
Running `Preview-PDF2DSC' with ``pdf2dsc _region_.pdf 
_region_.prv/tmpa9ckEg/preview.dsc''

Preview-PDF2DSC finished at Fri Nov  1 14:10:27
Running `Preview-Ghostscript' with 
``/usr/local/texlive/2019/bin/x86_64-linux/rungs 
-sOutputFile\=_region_.prv/tmpa9ckEg/pr1-\%d.png -q -dDELAYSAFER 
-dNOPAUSE -DNOPLATFONTS -dPrinted -dTextAlphaBits\=4 
-dGraphicsAlphaBits\=4 -sDEVICE\=png16m -r134.249x134.309 
-dDELAYBIND''

Preview-Ghostscript finished at Fri Nov  1 14:10:28

========================================


preview.dsc:

========================================

%!PS-Adobe-3.0
%%CreationDate: (D:20191101140451+01'00')
%%DocumentMedia: y34x50 50 34 70 white ()
%%+ y1x1 1 1 70 white ()
%%+ y100x223 223 100 70 white ()
%%+ y54x102 102 54 70 white ()
%%+ y143x189 189 143 70 white ()
%%+ y252x340 340 252 70 white ()
%%+ y63.17x276.52 276.52 63.17 70 white ()
%%+ y133x291 291 133 70 white ()
%%+ y55.23x92.98 92.98 55.23 70 white ()
%%+ y86x169 169 86 70 white ()
%%Pages: 12
%%EndComments
%%BeginProlog
/Page null def
/Page# 0 def
/PDFSave null def
/DSCPageCount 0 def
/DoPDFPage {dup /Page# exch store dup dopdfpages } def
%%EndProlog
%%BeginSetup
(_region_.pdf) (r) file { DELAYSAFER { .setsafe } if } stopped pop
runpdfbegin
process_trailer_attrs
%%EndSetup
%%Page: 1 1
%%PageMedia: y1x1
1 DoPDFPage
%%Page: 2 2
%%PageMedia: y252x340
2 DoPDFPage
%%Page: 3 3
%%PageMedia: y34x50
3 DoPDFPage
%%Page: 4 4
%%PageMedia: y55.23x92.98
4 DoPDFPage
%%Page: 5 5
%%PageMedia: y100x223
5 DoPDFPage
%%Page: 6 6
%%PageMedia: y63.17x276.52
6 DoPDFPage
%%Page: 7 7
%%PageMedia: y133x291
7 DoPDFPage
%%Page: 8 8
%%PageMedia: y54x102
8 DoPDFPage
%%Page: 9 9
%%PageMedia: y86x169
9 DoPDFPage
%%Page: 10 10
%%PageMedia: y133x291
10 DoPDFPage
%%Page: 11 11
%%PageMedia: y100x223
11 DoPDFPage
%%Page: 12 12
%%PageMedia: y143x189
12 DoPDFPage
%%Trailer
runpdfend
%%EOF

========================================

--
Joost Kremers
Life has its moments