Call unlist(strsplit(x, '\n'))
on the character vector x
and
make sure it works in a few edge cases: split_lines('')
returns
''
instead of character(0)
(which is the returned value of
strsplit('', '\n')
); split_lines('a\n')
returns c('a', '')
instead of c('a')
(which is the returned value of
strsplit('a\n', '\n')
.