From: Aditya Mahajan via ntg-context <ntg-context@ntg.nl>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Cc: Aditya Mahajan <adityam@umich.edu>
Subject: Disable reuse of figures
Date: Sat, 19 Feb 2022 01:30:31 -0500 (EST) [thread overview]
Message-ID: <nycvar.YAK.7.78.908.2202190110440.469458@nqv-guvaxcnq> (raw)
Hi,
This is related to a bug report for the filter module:
https://github.com/adityam/filter/issues/60
Normally, when the same figure is included twice, context only includes the figure once and refers to the included figure the second time. The option `object=no` to externalfigure is supposed to prevent that, but it doesn't work. For example, consider the following example the bug-report uses graphviz as the external program, but I have changed that to context to keep things self contained)
\usemodule[filter]
\defineexternalfilter
[graphviz]
[
filter=context --purge,
output=\externalfilterbasefile.pdf,
readcommand=\ReadPDF,
]
\def\ReadPDF#1%
{\externalfigure[#1][object=no]}
\starttext
Circle:
\startgraphviz
\startMPpage
draw fullcircle scaled 1cm;
\stopMPpage
\stopgraphviz
Square:
\startgraphviz
\startMPpage
draw fullsquare scaled 1cm;
\stopMPpage
\stopgraphviz
\stoptext
Behind the scenes, the first \startgraphviz ... \stopgraphviz environment writes the content to an external file (\jobname-temp-graphviz.tmp), runs `context --purge \jobname-temp-graphviz.tmp`, which creates `\jobname-temp-graphviz.pdf`. The `\ReadPDF` macro then includees the file (with object=no).
At the next \startgraphviz .. \stopgraphviz, the same process is repeated. The `\jobname-temp-graphviz.pdf` file is overwritten and the new file should have been included. But it is not. The output contains the first image twice.
I thought that object=no should have prevented the reuse. In fact, if I compile the file with luatex, I get an error message:
! error: (pdf inclusion): file has changed '12-two-outputs-temp-graphviz.pdf'
mtx-context | fatal error: return code: 256
Any idea why object=no is not working?
Thanks,
Aditya
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://context.aanhet.net
archive : https://bitbucket.org/phg/context-mirror/commits/
wiki : http://contextgarden.net
___________________________________________________________________________________
next reply other threads:[~2022-02-19 6:30 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-19 6:30 Aditya Mahajan via ntg-context [this message]
2022-02-19 10:26 ` Hans Hagen via ntg-context
2022-02-21 9:47 ` Aditya Mahajan via ntg-context
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=nycvar.YAK.7.78.908.2202190110440.469458@nqv-guvaxcnq \
--to=ntg-context@ntg.nl \
--cc=adityam@umich.edu \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).