Re: How to suppress title attribute in a CommonMark image link?

[Jennifer Bryan <jenny.f.bryan-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

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My problem is occurring at arm's length inside an R Markdown workflow (.R 
or .Rmd --> .md --> .html). I guess there's something else we're doing that 
causes ?URL encoding? of the image link. This is the pandoc error I 
ultimately see at the conversion to html stage for the affected image links:

pandoc: Could not fetch fooabcdefghijklmnopqrstuvwxyz_files/figure-markdown_strict/unnamed-chunk-1-1.png%20%22fig:%22
fooabcdefghijklmnopqrstuvwxyz_files/figure-markdown_strict/unnamed-chunk-1-1.png "fig:": openBinaryFile: does not exist (No such file or directory)
Error: pandoc document conversion failed with error 67



On Friday, October 13, 2017 at 11:05:11 AM UTC-7, John MacFarlane wrote:
>
> +++ Jennifer Bryan [Oct 13 17 10:57 ]: 
> >   From my narrow view of the world, changing the CommonMark writer to 
> >   match the rest here would be great! 
>
> Done. 
>
> >   In my real problem, the presence of this "fig:" makes image links 
> >   vulnerable to breakage via the insertion of a hard line break at the 
> >   space before "fig:". Therefore I have to also manipulate text 
> wrapping, 
> >   i.e. set --wrap=none or --wrap=preserve to protect the links. 
>
> I don't get that.  This is a perfectly valid image in 
> CommonMark: 
>
> ![](foo.png 
> "fig:") 
>
>
>
> >   On Friday, October 13, 2017 at 10:31:12 AM UTC-7, John MacFarlane 
> >   wrote: 
> > 
> >     It's a kludge we use to distinguish images that should be 
> >     treated as figures.  You can turn off the extension 
> >     entirely using 
> >         -f markdown-implicit_figures 
> >     I can also change the CommonMark writer so that the "fig:" 
> >     prefix is removed, as it is in the other Markdown writers. 
> >     +++ Jennifer Bryan [Oct 13 17 09:44 ]: 
> >     >   Why does the title "fig:" get inserted into this image link and, 
> >     more 
> >     >   importantly, how can I prevent that? 
> >     >   $ echo '![](foo.png)' | pandoc -f markdown -t commonmark 
> >     >   ![](foo.png "fig:") 
> >     >   It appears to be fairly specific to CommonMark, i.e. it's not 
> >     there for 
> >     >   other flavours of markdown. 
> >     >   $ echo '![](foo.png)' | pandoc -f markdown -t markdown_github 
> >     >   ![](foo.png) 
> >     > 
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> >     >   1. mailto:[6]pandoc-discuss+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org 
> <javascript:> 
> >     >   2. mailto:[7]pandoc-...-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org 
> >     >   3. [8]https://groups.google.com/d/msgid/pandoc-discuss/892c5a25- 
> >     086a-4e19-b4c1-8975cea8df0f-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org?utm_medium= 
> >     email&utm_source=footer 
> >     >   4. [9]https://groups.google.com/d/optout 
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> >   For more options, visit [13]https://groups.google.com/d/optout. 
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> >References 
> > 
> >   1. javascript:/ 
> >   2. javascript:/ 
> >   3. 
> https://groups.google.com/d/msgid/pandoc-discuss/892c5a25-086a-4e19- 
> >   4. http://40googlegroups.com/ 
> >   5. https://groups.google.com/d/optout 
> >   6. javascript:/ 
> >   7. javascript:/ 
> >   8. 
> https://groups.google.com/d/msgid/pandoc-discuss/892c5a25-086a-4e19-b4c1-8975cea8df0f-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org?utm_medium=email&utm_source=footer 
> >   9. https://groups.google.com/d/optout 
> >  10. mailto:pandoc-discuss+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org <javascript:> 
> >  11. mailto:pandoc-...-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org <javascript:> 
> >  12. 
> https://groups.google.com/d/msgid/pandoc-discuss/3dcce503-9815-4a2d-aad9-b884f0e023aa-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org?utm_medium=email&utm_source=footer 
> >  13. https://groups.google.com/d/optout 
>
>

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