R-alpha: R-beta: regex

grep("([A-Za-z][^:]*):\\1","Ac:Ac",value=T)

character(0)

I strongly suspect that no number of \s will make it work as long as
do_grep() in main/character.c contains this line:

        eflags = REG_NOSUB; 

Is this a feature? If so, can it at least be made optional?


Thomas Lumley
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