Removing last skip or insert negative space to captions of figures

[Jaroslav Hajtmar <hajtmar@gyza.cz>]

Hello,
Inasmuch as I dont fix the problem with stoppers in MkIV (in MkII is OK) 
(settings \setupcaption[figure][stopper={*}] and
\setuplist[figure][stopper={:}]  isnt doesn't work), therefore I want be 
resolving it throught very beastly way:
It is removing last skip (it is remove space after number of figure) 
from caption of figure
or inserting negative space with stoppers to captions of figures by 
example:

\placefigure{\negspacewithstopper Caption 1}
               {\externalfigure[figure1]}

Definition of \negspacewithstopper is:
\def\negspacewithstopper{$\!\!\!\!$:\quad }

It seem to me, that removing last skip is clearer method, but I dont 
know, if any like this command exist in context. PlainTeX macro \unskip 
hasnt effect.

Is there any way to removing last skip in Context (MkIV)??

Thankx Jaroslav





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