I have  a dictionary of keys and values.

I have a text string in which the keys are marked with before and ending 
symbols.

In ruby to replace the key with the value in the text string is reasonably 
simple.  (eg Dictionary.each { key,value | string.gsub!(key,value) }  - or 
similar to this.

While I don't mind rolling my version of this in Smalltalk, just exploring the 
regex code and the streams code it is not obvious where is the easiest place to 
start.

If someone would put their comments on where to start I will build the 
functionality and put it up on squeaksource since I think it is common 
requirement.

S.

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