* buffers (append) @ 2013-01-14 8:00 Alan BRASLAU 2013-01-14 8:34 ` Wolfgang Schuster 0 siblings, 1 reply; 4+ messages in thread From: Alan BRASLAU @ 2013-01-14 8:00 UTC (permalink / raw) To: mailing list for ConTeXt users Hello, In addition to \startbuffer \stopbuffer it would be nice to have \startappendbuffer \stopappendbuffer. I see that the lua function buffer.append() exists but I have not worked-out how to add this functionality cleanly as conTeXt macros. I imagine that this might be quite trivial for our TeX programming experts... (for once, a [useful?] suggestion that in the end will not entail many hours of work? :) Alan ___________________________________________________________________________________ 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://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: buffers (append) 2013-01-14 8:00 buffers (append) Alan BRASLAU @ 2013-01-14 8:34 ` Wolfgang Schuster 2013-01-14 13:48 ` Alan BRASLAU 0 siblings, 1 reply; 4+ messages in thread From: Wolfgang Schuster @ 2013-01-14 8:34 UTC (permalink / raw) To: mailing list for ConTeXt users Am 14.01.2013 um 09:00 schrieb Alan BRASLAU <alan.braslau@cea.fr>: > Hello, > > In addition to \startbuffer \stopbuffer > it would be nice to have \startappendbuffer \stopappendbuffer. > > I see that the lua function buffer.append() exists but I have not > worked-out how to add this functionality cleanly as conTeXt macros. > I imagine that this might be quite trivial for our TeX programming > experts... (for once, a [useful?] suggestion that in the end will not > entail many hours of work? :) \startbuffer[a] Line 1 \stopbuffer \startbuffer[b] Line 2 \stopbuffer \starttext \startlines \getbuffer[a,b] \stoplines \stoptext Wolfgang ___________________________________________________________________________________ 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://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: buffers (append) 2013-01-14 8:34 ` Wolfgang Schuster @ 2013-01-14 13:48 ` Alan BRASLAU 2013-01-15 13:41 ` Sietse Brouwer 0 siblings, 1 reply; 4+ messages in thread From: Alan BRASLAU @ 2013-01-14 13:48 UTC (permalink / raw) To: mailing list for ConTeXt users; +Cc: wolfgang.schuster On Mon, 14 Jan 2013 09:34:08 +0100 Wolfgang Schuster <wolfgang.schuster@gmail.com> wrote: > > Am 14.01.2013 um 09:00 schrieb Alan BRASLAU <alan.braslau@cea.fr>: > > > Hello, > > > > In addition to \startbuffer \stopbuffer > > it would be nice to have \startappendbuffer \stopappendbuffer. > > > > I see that the lua function buffer.append() exists but I have not > > worked-out how to add this functionality cleanly as conTeXt macros. > > I imagine that this might be quite trivial for our TeX programming > > experts... (for once, a [useful?] suggestion that in the end will > > not entail many hours of work? :) > > > \startbuffer[a] > Line 1 > \stopbuffer > > \startbuffer[b] > Line 2 > \stopbuffer > > \starttext > > \startlines > \getbuffer[a,b] > \stoplines > > \stoptext > > Wolfgang Thank you Wolfgang, this is useful. However, it would still be helpful to be able to generically add to a buffer without having to rename a new one. Shouldn't be very difficult but I did not find that anything like this already exists. I often think this way when I teach, adding steps to an example while repeating the previous steps. \startbuffer[a] Line 1 \stopbuffer \getbuffer[a] \startaddtobuffer[a] Line 2 \stopaddtobuffer \getbuffer[a] Alan ___________________________________________________________________________________ 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://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: buffers (append) 2013-01-14 13:48 ` Alan BRASLAU @ 2013-01-15 13:41 ` Sietse Brouwer 0 siblings, 0 replies; 4+ messages in thread From: Sietse Brouwer @ 2013-01-15 13:41 UTC (permalink / raw) To: mailing list for ConTeXt users Hi Alan, >> > In addition to \startbuffer \stopbuffer >> > it would be nice to have \startappendbuffer \stopappendbuffer. >> > >> > I see that the lua function buffer.append() exists but I have not >> > worked-out how to add this functionality cleanly as conTeXt macros. Here you go! % We want to join appended pieces with a newline % but '\n' is a bit rotten to pass inside \ctxlua % so we simply prepare the appending function inside \startluacode, instead \startluacode userdata = userdata or { } function userdata.addTempToBuffer(buffername) buffers.append( buffername, '\n' .. buffers.getcontent('APPENDTEMP') ) end \stopluacode \def\startappendbuffer[#1]% {% 1: create a \stopappendbuffer that appends APPENDTEMP to the buffer #1 \def\stopappendbuffer% {\ctxlua{userdata.addTempToBuffer('#1')}} % 2: write the buffer to APPENDTEMP instead of overwriting buffer #1 % then addTempToBuffer will take care of the appending. \dostartbuffer[APPENDTEMP][startappendbuffer][stopappendbuffer]} %%% --- And here is an example --- %%% %%% --- With my respects to Dorothy L. Sayers --- %%% \setuplayout[backspace=6cm, leftmargin=5cm, width=11cm] \showframe \starttext \startbuffer[x] \inmargin{Harriet Vane} Here then at home, by no more storms distrest, Folding laborious hands we sit, wings furled; Here in close perfume lies the rose-leaf curled, Here the sun stands and knows not east nor west, Here no tide runs; we have come, last and best, From the wide zone through dizzying circles hurled, To that still centre where the spinning world Sleeps on its axis, to the heart of rest. \stopbuffer \startlines \getbuffer[x] \stoplines ------ \startappendbuffer[x] \inmargin{Lord Peter Wimsey} Lay on thy whips, O Love, that we upright, Poised on the perilous point, in no lax bed May sleep, as tension at the verberant core Of music sleeps; for, if thou spare to smite, Staggering, we stoop, stooping, fall dumb and dead, And, dying so, sleep our sweet sleep no more. \stopappendbuffer \startlines \getbuffer[x] \stoplines ------ \typebuffer[x] \stoptext ___________________________________________________________________________________ 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://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2013-01-15 13:41 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2013-01-14 8:00 buffers (append) Alan BRASLAU 2013-01-14 8:34 ` Wolfgang Schuster 2013-01-14 13:48 ` Alan BRASLAU 2013-01-15 13:41 ` Sietse Brouwer
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