On 8/13/2018 15:52, Wolfgang Schuster wrote:
>
>
> Rik Kabel schrieb am 13.08.18 um 20:27:
>> On 8/13/2018 13:46, Wolfgang Schuster wrote:
>>>
>>> \starttext
>>>
>>> \BeforePar{\dontleavehmode\llap{? }}\GotoPar
>>>
>>> \input knuth
>>>
>>> \startnarrower
>>>
>>> \BeforePar{\dontleavehmode\llap{? }}\GotoPar
>>>
>>> \input knuth
>>>
>>> \stopnarrower
>>>
>>> \stoptext
>>>
>>> Wolfgang
>>
>> I am applying it incorrectly, or it does not work with the buffers 
>> created by \grabbufferdata:
>>
>>     \setupwhitespace[none]
>>     \setupindenting[none]
>>     \starttexdefinition unexpanded startBufTest
>>       \bgroup
>>       \dosingleempty\dostartBufTest
>>     \stoptexdefinition
>>     \starttexdefinition dostartBufTest [#SETUPS]
>>       \getrawparameters[BufTest][xx=yy,#SETUPS]
>>       \grabbufferdata[TestBuffer][startBufTest][stopBufTest]
>>     \stoptexdefinition
>>     \starttexdefinition stopBufTest
>>       \startnarrower[left,right]
>>       \startparagraph
>>         \BeforePar{\dontleavehmode\llap{? }}\GotoPar
>>         \inlinebuffer[TestBuffer]
>>       \stopparagraph
>>       \stopnarrower
>>       \egroup
>>     \stoptexdefinition
>>
>
> \starttexdefinition stopBufTest
>   \startnarrower[left,right]
>   \startparagraph
>     \dontleavehmode\llap{? }%
>     \blank[overlay]
>     \inlinebuffer[TestBuffer]
>   \stopparagraph
>   \stopnarrower
>   \egroup
> \stoptexdefinition
>
>
> Wolfgang

Thank you, Wolfgang. That does it. Note that the % escaping the line end 
is not needed (    although it might be needed outside a 
\starttexdefinition environment) – the following works as well:


    \starttexdefinition stopBufTest

       \startnarrower[left,right]

       \startparagraph

         \dontleavehmode{\llap{? }}

         \blank[overlay]

         \inlinebuffer[TestBuffer]

       \stopparagraph

       \stopnarrower

       \egroup

    \stoptexdefinition


-- 
Rik