Am 13.06.2011 um 15:40 schrieb luigi scarso:

> Where is the difference ?

The TeX solution is faster.

\define[1]\ThisHelps
  {\handletokens#1\with{\hskip 0pt plus .1pt\firstofoneargument}}

\define[1]\ThisHelpsLuigi
  {\startluacode
   s='#1'
   s= string.gsub(s,'(.)',"\%1\\hskip 0sp plus .1pt")
   context(s)
   \stopluacode}

\showframe

\starttext

\testfeatureonce{10000}{\ThisHelps     {abcde123xyz}}%
\testfeatureonce{10000}{\ThisHelpsLuigi{abcde123xyz}}

\stoptext

Wolfgang

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