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keyboard
2007 Jun 28
3
: regular expressions: escaping a dot
What's really the problem with:
> regexpr( '\.odt$', "xxxxYodt", perl=TRUE )
Warning: '\.' is an unrecognized escape in a character string
Warning: unrecognized escape removed from "\.odt$"
[1] 5
attr(,"match.length")
[1] 4
I know that I could use:
> regexpr( '[.]odt$', "xxxxYodt", perl=TRUE )
But it seems to me that