> On 20 Feb 2024, at 12:59, madiazm.eoicc@gmail.com wrote:
> 
> no, I just want to split at the end of each sentence to get the four arguments: now I pass this four lines to my macro \tareaAbc (with the dirty trick of ñ)
> 
> In den Büchereien gibt es auch …ñ 
> … Kuchen.ñ       
> … Theater.ñ       
> … Workshops.ñ 
> 
> and I wish your context.foo(lines[i]) iteration would become a single context.tareaAbc(the four arguments somehow separated so that I can manage each line with the corresponding context formatting)
> 
> As you see my definition is: \def\tareaAbc #1ñ#2ñ#3ñ#4ñ{...context formating for each #)}; Its the clue to pass each sentence as an independent argument that I don't get to work.
> thanks again
> 

A variation on Hans original suggestion is to use a buffer instead of a separate text file, combined with Lua.

\startluacode
  userdata = userdata or {}
  
  function userdata.formatTestQuestions()
    local the_buffer = buffers.getlines("TestQuestions")
    local tracker = 0
    local the_question = {}
    local letters = {"-", "a", "b", "c"}
    
    -- Go through the buffer of questions one line at a time
    for i = 1,#the_buffer do

      -- Skip blank lines but 'collect' non-blank lines until we have four
      -- (which is assumed to be a whole question)
      if  string.strip(the_buffer[i]) == "" then
        tracker = 0
        the_question = {}
      else
        tracker = tracker + 1
        the_question[tracker] = the_buffer[i]
      end
      
      -- If tracker has got to 4 then we've read four lines
      if tracker == 4 then
        context.startlines()
        context("{\\bf Beispiel:} %s", the_question[1])
        context(true)
        for answer = 2,4 do
          context("\\qquad %s) %s", letters[answer], the_question[answer])
          context(true)
        end
        context.stoplines()
                  
        -- Reset for the next question (in case no blank line)
        tracker = 0
        the_question = {}
      end
      
    end
  end
\stopluacode

\def\startTestQuestions
  {\dostartbuffer[TestQuestions][startTestQuestions][stopTestQuestions]}
\def\stopTestQuestions
  {\ctxlua{userdata.formatTestQuestions()}}

\starttext
Here are some questions:

\startTestQuestions
In den Büchereien gibt es auch … 
… Kuchen.
… Theater.
… Workshops.

In den Büchereien gibt es auch … 
… Kuchen.
… Theater.
… Workshops.
In den Büchereien gibt es auch … 
… Kuchen.
… Theater.
… Workshops.
\stopTestQuestions

How do you think you did on that test? Here's another one.

\startTestQuestions
In den Büchereien gibt es auch … 
… Kuchen.
… Theater.
… Workshops.
\stopTestQuestions

\stoptext

—
Bruce Horrocks
Hampshire, UK