Hello,

I’m currently writing an article for „Die TeXnische Komödie“ and discovers that 
my code is not working.

When the mode „change“ is set, the text should appear with a red line on the 
side,
that part is working.
When the mode is not set, it should disappear,
that’s the part that is not working.

My idea was to put the text into a buffer and ignore it, that didn’t work.


% !TEX TS-program = ConTeXt (LuaTeX 1.0.9)
% !TEX encoding = UTF-8 Unicode

%\enablemode[change]

% Paragraph removed
\definestartstop[ChangePR][
  before={\doifmodeelse{change}
  {\startsidebar[rulecolor=red]}
  {}},
  after={\doifmodeelse{change}
  {\stopsidebar}
  {}},
  ]
% Paragraph removed
%\definestartstop[ChangePR][
%  before={\doifmodeelse{change}
%    {\startsidebar[rulecolor=red]}
%    {\startbuffer[ignore]}},
%  after={\doifmodeelse{change}
%    {\stopsidebar}
%    {\stopbuffer}},
%  ]
  
\starttext

Before

\startChangePR
\input knuth
\stopChangePR

After

\stoptext

Greetings Axel
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