% engine=luatex

%D \module
%D   [       file=mtx-context-ideas,
%D        version=2009.03.21,
%D          title=\CONTEXT\ Extra Trickry,
%D       subtitle=Placeholder File,
%D         author=Hans Hagen,
%D           date=\currentdate,
%D      copyright=\PRAGMA]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.

% The hard coded goodies in texexec are now external. We also use this
% opportunity to explore mixed tex/lua user interfacing so you will see
% some old and new tricks here that might disappear or become extended.
%
% if users want to add their own ... go ahead but use a different
% namespace:
%
% mtx-context-third-somename.tex
% mtx-context-user-somename.tex

% \startluacode
%     -- some day we might move the whole ui to lua
%     context = context or { }
%     function interfaces.tosetups(setups)
%         if not setups then
%             return ""
%         elseif type(setups) == "table" then
%             local t = { }
%             for k,v in next, setups do
%                 t[k] = "{" .. v .. "}"
%             end
%             return table.concat(t,",")
%         else
%             return setups
%         end
%     end
%     function context.setuplayout(category,setups)
%         setups = setups or category
%         tex.sprint(string.format("\\setuplayout[%s]",interfaces.tosetups(setups))
%     end
%     local topspace = document.arguments["topspace"] or 0
%     if dimen(topspace) > dimen(0) then
%         context.setuplayout { topspace = dimen(topspace) }
%     end
%     local backspace = document.arguments["backspace"] or 0
%     if dimen(topspace) > dimen(0) then
%         context.setuplayout { backspace = dimen(backspace) }
%     end
% \stopluacode
