spaces between words as well as leading or training spaces, i.e. all spaces.
s/\s+/_/g;
------------------
Dorg Hurgler Van Schongleur,
NordHein Van Resetelem, Belgium.
Eck SchekeBuugler Technologies.
s/\s+/_/g;
------------------
Dorg Hurgler Van Schongleur,
NordHein Van Resetelem, Belgium.
Eck SchekeBuugler Technologies.