Of course, you have to escape the percent character if you do not want it to be interpreted as a comment... however, in the example below, the URL does not get rendered properly, nor does using \letterpercent, so there is something that we need to fix in our treatment of URLs. \startbuffer[references] @misc{kraft, author = "Kraft, Nathan", title = "Mr Kraft's Virtual Filing Cabinet", year = "2015", url = "http://mrkraft.wikispaces.com/Mr+Kraft\%27s+Virtual+Filing+Cabinet" } \stopbuffer \usebtxdefinitions[apa] \usebtxdataset[references.buffer] \starttext \nocite[kraft] \placelistofpublications \showbtxdatasetcompleteness \stoptext On Tue, 9 May 2017 09:44:01 +1200 Henri Menke wrote:

Dear list,

The percent character in btx field is taken as a comment characters which leads to the rest of the field being discarded.  In the MWE below, the URL is cut off at the % sign and everything after it is lost.

Cheers, Henri

---

\startbuffer[references] @misc{kraft,   author = "Kraft, Nathan",   title = "Mr Kraft's Virtual Filing Cabinet",   year = "2015",   url = "http://mrkraft.wikispaces.com/Mr+Kraft%27s+Virtual+Filing+Cabi net" } \stopbuffer

\usebtxdataset[references.buffer] \usebtxdefinitions[apa]

\starttext

\nocite[kraft] \placelistofpublications

\stoptext ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki!

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-- Alan Braslau CEA DSM-IRAMIS-SPEC CNRS UMR 3680 Orme des Merisiers 91191 Gif-sur-Yvette cedex FRANCE tel: +33 1 69 08 73 15 fax: +33 1 69 08 87 86 mailto:alan.braslau@cea.fr

On Tue, 9 May 2017 11:27:51 +1200 Henri Menke wrote:

However, I wonder whether the treatment of % in bib files is correct, as regular BibTeX does treat the % verbatim.  Because the following LaTeX example works just fine, with unescaped %.  In my opinion this behaviour should be adopted by ConTeXt.

From BibTeXing: 7. For Scribe compatibility, the database files allow an @COMMENT command; it’s not really needed because BibTEX allows in the database files any comment that’s not within an entry. If you want to comment out an entry, simply remove the ‘@’ character preceding the entry type. ... 14. LATEX’s comment character ‘%’ is not a comment character in the database files. From Tame the BeaST: New entries always start with @. Anything outside the “argument” of a “command” starting with an @ is considered as a comment. This gives an easy way to comment a given entry: just remove the initial @. As usual when a language allows comments, don’t hesitate to use them so that you have a clean, ordered, and easy-to-maintain database. Conversely, anything starting with an @ is considered as being a new entry. ---- There is a special entry type named @comment. The main use of such an entry type is to comment a large part of the bibliography easily, since anything outside an entry is already a comment, and commenting out one entry may be achieved by just removing its initial @. So bibtex has a funny way of dealing with comments, and do we really care about Scribe? We made the choice NOT to remain *strictly* bibtex compatible, after all bibtex is limited to ASCII 7-bit! The % comment is *universal* in TeX, Metapost, etc. so we chose to respect this, much stronger in my opinion, convention. Alan -- Alan Braslau CEA DSM-IRAMIS-SPEC CNRS UMR 3680 Orme des Merisiers 91191 Gif-sur-Yvette cedex FRANCE tel: +33 1 69 08 73 15 fax: +33 1 69 08 87 86 mailto:alan.braslau@cea.fr

On Mon, 2017-05-08 at 20:15 -0400, Rik Kabel wrote:

On 2017-05-08 17:44, Henri Menke wrote:

...

Dear list,

The percent character in btx field is taken as a comment characters which leads to the rest of the field being discarded.  In the MWE below, the URL is cut off at the % sign and everything after it is lost.

Cheers, Henri

---

\startbuffer[references] @misc{kraft,   author = "Kraft, Nathan",   title = "Mr Kraft's Virtual Filing Cabinet",   year = "2015",   url = "http://mrkraft.wikispaces.com/Mr+Kraft%27s+Virtual+Filing+ Cabi net" } \stopbuffer

\usebtxdataset[references.buffer] \usebtxdefinitions[apa]

\starttext

\nocite[kraft] \placelistofpublications

\stoptext  The bibtex entry in this example is provided in a buffer. The buffer mechanism does not handle characters any differently than other text in the file, and % in a ConTeXt buffer has to be escaped if it does not signify a comment.

That is simply not true!  Content inside ConTeXt buffers is as verbatim as reading an external file.  Try \typebuffer instead of \getbuffer your example below and observe that the comment sign is perfectly preserved.

If you specify an external (.bib or .bibtex) file to supply the data,  % does not need to be escaped. So, this part is simple user error. (With \starttext \startbuffer   abc%def

  ghi\%jkl \stopbuffer \getbuffer \stoptext you do not get %def in the output. Why do you expect different behavior if the buffer holds a bibtex entry?)

The way hyphenatedurl handles things may well be worthy of improvement.

--  Rik _____________________________________________________________________ ______________ 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/nt g-context webpage  : http://www.pragma-ade.nl / http://context.aanhet.net archive  : https://bitbucket.org/phg/context-mirror/commits/ wiki     : http://contextgarden.net _____________________________________________________________________ ______________

Am Mon, 8 May 2017 17:56:08 -0600 schrieb Alan Braslau:

So bibtex has a funny way of dealing with comments, and do we really care about Scribe?

biber handles comments differently than bibtex, see e.g. https://tex.stackexchange.com/questions/261261/are-comments-discouraged-in-a... As a thumbrule one can sum the rule up that *inside* field text comment chars should be input according the tex rule for the field *type*. That means that normal textfields should use \%, while url's and other verbatim-like field can use %.

We made the choice NOT to remain *strictly* bibtex compatible, after all bibtex is limited to ASCII 7-bit!

That's not true bibtex has no real problem with 8-bit-encodings, and works even quite often quite good with utf8 (when you don't try to use at places where it can be broken into parts. -- Ulrike Fischer http://www.troubleshooting-tex.de/