words -package:text-zipper -package:cabal-install-solver -package:hledger -package:ghc package:xmonad-contrib

words breaks a string up into a list of words, which were delimited by white space (as defined by isSpace). This function trims any white spaces at the beginning and at the end.

Examples

>>> words "Lorem ipsum\ndolor"
["Lorem","ipsum","dolor"]

>>> words " foo bar "
["foo","bar"]

unwords joins words with separating spaces (U+0020 SPACE). unwords is neither left nor right inverse of words:

>>> words (unwords [" "])
[]

>>> unwords (words "foo\nbar")
"foo bar"

Examples

>>> unwords ["Lorem", "ipsum", "dolor"]
"Lorem ipsum dolor"

>>> unwords ["foo", "bar", "", "baz"]
"foo bar  baz"

Join words with spaces, and wrap the result in delimiters unless there was exactly one element.

Examples

>>> wrapUnwords "{" "}" ["A", "B"]
"{A B}"

>>> wrapUnwords "{" "}" ["A"]
"A"

>>> wrapUnwords "{" "}" []
""

Add a string to the right, prepending a space to it if necessary

Remove a number of words from the left

Remove a number of words from the right

Keep a number of words from the left

Keep a number of words from the right

Add a string to the left, appending a space to it if necessary