Re: Check the character after a macro

["Sam Ḥilluc" <shilluc@gmx.com>]

On 2015-05-01 19:38, Otared Kavian wrote:
> Hi,
> 
> You have several commands in ConTeXt doing what you are seeking to do: please look at the examples below:
> 
> %%% begin do-if-inset.tex
> \starttext
> \type{\doifinset{A}{A,B,C}{should go}:} \doifinset{A}{A,B,C}{should go}
> 
> \type{\doifinset{D}{A,B,C}{should go}:}  \doifinset{D}{A,B,C}{should participate}
> 
> 
> \type{\doifnotinset{}{A,B,C}{not in the set}:} \doifnotinset{}{A,B,C}{not in the set}
> 
> \type{\doifnotinset{D}{A,B,C}{not in the set}:} \doifnotinset{D}{A,B,C}{not in the set}
> 
> \doifinsetelse{D}{A,B,C}{it is in the set}{it is not in the set}
> 
> \define\test{B}
> 
> \type{\doifinsetelse{\test}{A,B,C}{\test\ is in the set}{\test\ is not in the set}}
> 
> \doifinsetelse{\test}{A,B,C}{\test\ is in the set}{\test\ is not in the set}
> \stoptext
> %%% end do-if-inset.tex
> 
> Best regards: OK

This works for testing if a given character is in a set, but how can I retrieve
that character just after the defined macro.

To give an example, a macro that adds a dot if the next character is not a
comma.

    \MyMacro{text1} text2     ->      text1. text2
    \MyMacro{text1}, text2    ->      text1, text2

Thanks.
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