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373090
2017 Aug 16
3
Problem with a regular expression.
Hi...
I have come upon a problem with a regular expression which causes base-R to freeze. I have reproduced the phenomenon on several machines running R under Windows 10, and also under OSX on different Apple MACs.
The minimal example is:-
Oldterm is a vector of characters, e.g. "A", "B", "A", "*", "B"
The regular expression is