Re: \setupinteraction v commas

[Hans Hagen <j.hagen@xs4all.nl>]

On 3/28/2020 3:00 PM, Tomas Hala wrote:
> Sat, Mar 28, 2020 ve 01:20:26PM +0100 Hans Hagen napsal(a):
> # On 3/27/2020 6:06 PM, Pablo Rodriguez wrote:
> # >On 3/26/20 6:54 PM, Tomas Hala wrote:
> # >>[...]
> # >>I would like to have commas in metadata attribute keywords
> # >>because space is confusing -- one cannot distinguish
> # >>a space as a separator from a space as a part of a keyword.
> # >
> # >Hi Tomáš,
> # >
> # >a workaround is contained in the following sample
> # >
> # >     \def\comma{‚}
> # >     \enabledirectives
> # >         [interaction.identity.preroll]
> # >
> # >     \setupinteraction
> # >       [title={a, b, c},
> # >        subtitle={a, b, c},
> # >        author={a, b, c},
> # >        keyword={a\comma\ b\comma\ c},
> # >     ]
> # >
> # >     \starttext
> # >     \null
> # >     \stoptext
> # >
> # >BTW, I’m faking the character with an opening single comma (such as the
> # >one used in German [and probably other languages 😅]).
> # >
> # >I don’t know how to insert the actual comma there, since it gets
> # >replaced when using the command.
> # >
> # >Just in case it might help,
> # It's no big deal to support
> #
> #   keyword={{a, b, c}},
> #
> # which then gives:
> #
> #   <pdf:Keywords>a, b, c</pdf:Keywords>
> #
> # but then you end up with
> #
> #   keyword={{a, b, c},{d, e, d}},
> #
> # becoming
> #
> #   <pdf:Keywords>a, b, c d, e, f</pdf:Keywords>
> #
> # i wonder what, after encountering this, the next request will be ...
> #
> # anyway, I suppose you will check what different viewers make of that
> # when they display/handle keywords and wikify it
> #
> # Hans
> 
> I am afraid that there is nothing to be wikified... I opened it
> (Mint 19.3/64b) in qpdfview and evince, print out by pdfinfo and mutool
> and in all cases there is "a b c" or "a, b, c" (, = single left quote)
> as was written. (My acroread is just broken and in xpdf and mupdf
> I guess there is no service to display it.)
> 
> What is the reason that keyword attribute does not accept commas whereas
> others (title, author...) do?
> 
> #   keyword={{a, b, c}},
> 
> As far as I know, key words (in papers, books etc.) are used only as a comma
> separated list of terms without further structuring so I cannot imagine
> who and why would need braces in normal cases.

Normally when something is applied (like here removing commas) there is 
a reason (here we're talking of very old features so i would not be 
surprised id some older acrobat liked it more when displaying them and 
often these older feature are made such that acrobat was served). And 
pdf data structures are not something typeset, which for means means: 
'word' is just that 'word'.

Hans


-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
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
___________________________________________________________________________________