[NTG-context] Re: using an end of line as parameter

[Hans Hagen <j.hagen@xs4all.nl>]

On 2/19/2024 1:49 PM, Miguel Diaz wrote:
> Dear list,
> I want to format some language tests that different people are 
> preparing. Each one uses different software and there are always 
> problems in format that i want to solve.
> 
> for a a/b/c questions I receive text that I will format to a list 
> (comments are mine)
> 
> In den Büchereien gibt es auch … %the question
> … Kuchen. %option a
> … Theater. %option b
> … Workshops. %option c
> 
> I need to detect \par or whatever sign marks the newline character as an 
> argument delimiter so that I dont have to paste hundreds of times braces 
> for each argument.
> For the example, I use this macro definition (which does no work!)
> 
> \long\def\prueba 
> #1\par#2\par#3\par#4ñ{\framed[frame=off,width=0.8\textwidth,corner=round,offset=1em,align=flushleft]%
> {{\bf Beispiel}: #1\\
> \qquad  a) #2\\
> \qquad  b) {\bf #3}\\
> \qquad  c) #4
> }
> 
> I get: tex error on line 493 in file ./prueba.tex: The file ended when 
> scanning an argument.
> 
> the macro seems to  read to the end of file not detecting \par; I know 
> its the \par that causes the problem; I used ^^M also which I read is a 
> sinonym for return but it also does not work.
> 
> Help would be appreciated (my computer keyboard would appreciate it too...)
better start thinking something:

\starttext

\def\foo#1{<<<#1>>>>\par}

\startluacode
local s = [[
line 1
line 2
line 3
line 4
]]

-- local s - io.loaddata("yourfile.txt")

local lines = string.splitlines(s)

for i=1,#lines do
     if lines[i] ~= "" then
         context.foo(lines[i])
     end
end

\stopluacode

\stoptext


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