On 5/16/2021 2:52 PM, Otared Kavian wrote:
Hi Hans,
I have been noticing for some time that \setupsynctex does not work properly,
at least in TeXShop on MacOS.
A « filename.synctex » file is created but on most occasions it does not
contain many lines, and one cannot go from the PDF file to the right location
in the source file.
Has something changed in the way synctex used to work ?
Below I am sending you a test file with its PDF and .synctex files, for you to
see for yourself. Sorry for the disturbance…
irr texshoip has soem setting for it (you need to check with Dick) which
relates to a change in synctex
anyway, this whole synctex thing is a mess ... it's rather bound to the
way latex does things and way to complex due to these heuristics so it
could never work well for context
the reason you see little in the .synctex file is that context doesn't
use the synctec library at all: i produce just what is needed directly,
so we have a way more compact output (and also better 'real file'
tracking, plus avoiding generated stuff in the otr that makes no sense
to sync to because it has no file; we also protect styles from being
accessed that way)
now, in my opinion, the biggest drawback of synctex is that one needs to
compile it into the editor/viewer. Far better would have been to let the
viewer call out to an external program (configurable) that reports back
the file and line ... more flexible, better upward compatibility, no
need to have the synctex code on board, hardly any code and no fuzzy
heuristics to fight
but I gave up communicating that because i cannot reason with the guy
(different wavelengths .. years ago already)
now, here is something to think about:
>mtxrun --script synctex --list
mtx-synctex | invalid synctex log file %a
>mtxrun --script synctex --list synctex-broken.synctex
mtx-synctex | begin page: 1
mtx-synctex | end page: 1
mtx-synctex | begin page: 2
mtx-synctex | [ 71 135 177 149] : 9 : ./synctex-broken.tex
mtx-synctex | [ 181 135 224 149] : 2 : ./synctex-broken.tex
mtx-synctex | [ 71 163 290 178] : 14 : ./synctex-broken.tex
mtx-synctex | [ 71 178 290 193] : 17 : ./synctex-broken.tex
mtx-synctex | end page: 2
mtx-synctex | begin page: 3
mtx-synctex | [ 71 135 496 149] : 21 : ./synctex-broken.tex
mtx-synctex | [ 71 149 496 164] : 21 : ./synctex-broken.tex
mtx-synctex | [ 71 163 496 178] : 21 : ./synctex-broken.tex
mtx-synctex | [ 71 178 496 193] : 21 : ./synctex-broken.tex
mtx-synctex | [ 71 192 496 207] : 21 : ./synctex-broken.tex
mtx-synctex | [ 71 207 496 222] : 21 : ./synctex-broken.tex
mtx-synctex | [ 71 221 462 236] : 21 : ./synctex-broken.tex
mtx-synctex | end page: 3
>mtxrun --script synctex --report --page=3 --x=76 --y=140
synctex-broken.synctex --console
"./synctex-broken.tex" 21
see? the info is just there, so you can try to convince the texshop
creator to support this:
-- call an external program with these arrguments (the texhop editor
knows the positions as it has the viewer built in)
-- go to reported file and line
afaik synctex works for my collegue and scite/sumatra and actually he
uses the fact that in context it also goes to positions in xml files
because it tracks files and lines in xml nodes too (it's the reason why
i support synctex at all, personally I never use(d) it)
Hans
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Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
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