R grep regular expression using elements in a vector (FOLLOW UP)

Question

Following up on this question, I have another example where I cannot use the accepted answer.

Again, I want to find each of the exact group elements in the

Answer 1

Try this from the stringr package. The "coll" option implements "human readable collation rules" which helps you match things that look identical, but for some reason, R resists matching them at first:

> library(stringr)
> str_detect(labs,coll(groups))
 [1]  TRUE FALSE FALSE  TRUE FALSE  TRUE  TRUE FALSE FALSE  TRUE FALSE  TRUE  
TRUE FALSE FALSE
[16]  TRUE FALSE FALSE  TRUE FALSE FALSE  TRUE FALSE FALSE