stringr::str_extract all elements of a list R

I’m trying to get all the "banana + word" ocurrences of a given object, but the str_extract returns only the first occurence. My code:

all_terms <- c("banana word2 word3 word4 banana split word2 word3 word4",
               "x y z",
               "banana ice cream")

banana_terms <- all_terms %>% 
  str_extract("banana.+") %>% 
  word(1,2)


banana_terms
Out: [1] "banana word2" NA             "banana ice"  

What I wanted:

Out: [1] "banana word2" "banana split", "banana ice" 

>Solution :

Use str_extract_all and \\w+ to get the word after banana (and banana).

all_terms %>% 
  str_extract_all("banana.\\w+") %>% 
  unlist()

# [1] "banana word2" "banana split" "banana ice"

Without unlist, you get a list:

str_extract_all(all_terms, "banana.\\w+")

[[1]]
[1] "banana word2" "banana split"

[[2]]
character(0)

[[3]]
[1] "banana ice"