TCL - split string by arbitrary number of whitespaces to a list

Question

Say I have a string like this:

set str "AAA    B C     DFG 142               56"

Now I want to get a list as follows:

{AAA B C DFG 142 56}

For that I want to use split function, but in that case I get some extra empty lists {}. How I can get the list above?

Answer 1

set text "Some arbitrary text which might include \$ or {"
set wordList [regexp -inline -all -- {\S+} $text]

See this: Splitting a String Into Words.

Answer 2

You can always do the following:

set str "AAA    B C     DFG 142               56"
set newStr [join $str " "]

It will output the following:

{AAA B C DFG 142 56}

Answer 3

The textutil::split module from tcllib has a splitx proc that does exactly what you want

package require textutil::split
set result [textutil::split::splitx $str]