On Wednesday 24 June 2009 12:28:05 Alex Schuster wrote:

> man sed answers your second question :)

 s/regexp/replacement/
     Attempt to match regexp against the pattern space. If successful,
     replace that portion matched with replacement. The replacement may
     contain the special character & to refer to that portion of the pattern
     space which matched, and the special escapes \1 through \9 to refer to
     the corresponding matching sub-expressions in the regexp.

No mention of using a different separator, and I couldn't find any other 
reference either. I did look before asking.

-- 
Rgds
Peter

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