how to get to interesting part of pattern match

Hi,

I am looking for a way to extract an "interesting" part of the match to
a regular expression. For example the pattern "[./](*.)" matches a
substring that begins with either "." or "/" followed by anything. I am
interested in this "anything" w/o the "." or "/" prefix. If say I match
the pattern against "abc/foo" I want to get "foo", not "/foo". In Perl
one can simply wrap the "interesting" part in () and get it out of the
match. Is it possible to do a similar thing in R?

There seems to be a way to refer to the match, see below, but I couldn't
figure out how to make gsub return it.

gsub("[./](*.)", "\\1", "abc/foo")

[1] "abcfoo"

Thanks,
Vadim

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what about:

gsub(".*[./](*.)", "\\1", "abc/foo")

output-start
[1] "foo"
output-end

or try:

strsplit("abc/foo","/")[[1]][2]

output-start
[1] "foo"
output-end

Peter Wolf

how to get to interesting part of pattern match

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