At Wolfgang’s request, a new thread for this subject. I have cleaned up the example from the July 5 posting, but the problems are the same as shown there. In July Alan suggested that there might a bug here, but nothing has been done to address it since then. Wolfgang suggested (http://www.mail-archive.com/ntg-context%40ntg.nl/msg35580.html) that method=font is required for proper protrusion handling for quotations.

1. When \setupdelimitedtext[quotation][method=font] is present and there is no citation in a footnote within a startquotation block and a bibliography is produced, compilation proceeds normally.
   
2. When \setupdelimitedtext[quotation][method=font] is present and there is a citation in a footnote within a startquotation block and a bibliography is produced, the compilation complains of a missing right curly. When allowed to continue to completion the protrusion for the opening quotation marks does not match the protrusion for similar marks not produced through \startquotation. Citations in footnotes outside quotation blocks are not a problem. Without a bibliography (\placelistofpublications)
   
3. When \setupdelimitedtext[quotation][method=font] is present, the [right] option of \startblockquotation is treated as text within the quotation. This can be resolved by adding “leftmargin=” to the \setupdelimitedtext[quotation] command (but that complicates matters when you want other alignments). Similarly, the [left] and [middle] options are ignored as options and appear as text.
   
4. When “method=font” is not present, protrusion for block quotations (\startblockquotation … \stopblockquotation) is greater than and not aligned with other protrusion.
5. When “method=font” is not present, protrusion for non-block quotations (\quotation{…}) is not done at all.
   
6. With the older bibliography system, footnotes in citations in quotation blocks do not cause a halt in compilation.
   
7. With the older bibliography system, item 3 is still a problem, that is, method=font appears to be inimical to the left, right, and middle options for \startblockquotation without regard to the bibliography system in use.
   

\showframe

\definefontfeature [default][protrusion=quality]
\setupalign        [hz,hanging]

% The next line should allow \startquotation to protrude quotes properly
\setupdelimitedtext[quotation][method=font]

%==================
% For testing with old regime, enable next and disable following
%\setupbibtex[database=sample.bib] % requires sample.bib in current directory
%------------------
% For testing with new regime, disable above and enable following
\definebtxdataset  [sample] % finds and uses distribution sample.bib
\usebtxdataset     [sample.bib]
%==================

\starttext
\startparagraph
  There is a citation in the footnote to this standard paragraph\footnote{This footnote has a citation \cite[Eijkhout1991].}
\stopparagraph

\startparagraph
\startquotation[right]
  There is a citation in the footnote to this block quotation\footnote{This footnote has a citation \cite[hh2010a].}
\stopquotation
\stopparagraph

\startparagraph
\startquotation[right]
  There is no citation in the footnote to this block quotation\footnote{This footnote has no citation.}
\stopquotation
\stopparagraph

\startparagraph
  \quotation{There is a citation in the footnote to this non-block quotation paragraph\footnote{This footnote has a citation \cite[Eijkhout1991].}}
\stopparagraph

\startparagraph
  \quotation{There is no citation in the footnote to this non-block quotation paragraph\footnote{This footnote has no citation.}}
\stopparagraph

\startparagraph
  “There is a citation in the footnote to this standard paragraph\footnote{This footnote has a citation \cite[Eijkhout1991].}”
\stopparagraph

\startparagraph
  “There is no citation in the footnote to this standard paragraph\footnote{This footnote has no citation.}”
\stopparagraph

\blank[big]

%==================
% For testing with old regime, enable next and disable following
%\placepublications
%------------------
% For testing with new regime, disable above and enable following
\placelistofpublications
%==================

\stoptext

--
Rik