Thanks, Hans. In my test file I now have

\mainlanguage[en]
\unexpanded\def\ {\mathortext\normalspaceprimitive\space}

\starttext

x. x, x x\crlf
x, x. x x\crlf
x,\ x.\ x\ x\crlf
x.\ x,\ x\ x\crlf
X. X, X X\crlf
X, X. X X\crlf
X,\ X.\ X\ X\crlf
X.\ X,\ X\ X

\stoptext

Unfortunately, I do not see any effect in the output (under MKII).  The space after a period looks the same as the space after “.\ ”, though it should be bigger.

Alan

On Aug 3, 2008, at 12;05,30 , Hans Hagen wrote:

Alan Bowen wrote:
I apologize to all, but circumstances oblige me to pick up a very  
pedestrian thread for the third time.

As Peter Münster noted: in the following test-file

\starttext
x. x, x x\crlf
x, x. x x\crlf
x,\ x.\ x\ x\crlf
x.\ x,\ x\ x\crlf
X. X, X X\crlf
X, X. X X\crlf
X,\ X.\ X\ X\crlf
X.\ X,\ X\ X
\stoptext

you see 2 bugs:

- in MKIV there is no bigger space after "x."
- in MKII the space after "x.\ " is a big one

The problem remains in ConTeXt  ver: 2008.07.31 16:30 for MKII (which  
I am using). I am do not know if here have been any changes in MKIV.

Is there a fix for this in the works?  I am about to publish a series  
of pages which will look vastly better if this is fixed.

\unexpanded\def\ {\mathortext\normalspaceprimitive\space}

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