re = /(?<=,\s*)(?:([A-Z])\.?[a-üA-Z{\\'}]*(?:(-)| )?)(?:([A-Z])(\.?)[a-üa-zA-Z{\\'}]*(?:(-)| )?)?(?:([A-Z])(\.)?[a-zA-Z{\\'}]*(?:(-)| )?)?(?= and|$)/m
str = 'Copiez votre liste d\'auteur ici. Elle doit être sous la forme
Bennett, Elena M. and Baird, Julia and Baulch, Helen and Chaplin-Kramer, Rebecca and Fraser, Evan and Loring, Phil and Morrison, Peter and Parrott, Lael and Sherren, Kate and Winkler, Klara J. and Cimon-Morin, Jérôme and Fortin, Marie-Josée and Kurylyk, Barret L. and Lundholm, Jeremy and Poulin, Monique and Rieb, Jesse T. and Gonzalez, Andrew and Hickey, Gordon M. and Humphries, Murray and Krishna {Bahadur KC} and Lapen, David
Certain prénoms composés (ici Ruel, Jean-Claude) doivent être terminé à l\'aide du deuxième outil:
'
subst = '$1.$2$3$4$5$6$7'
result = str.gsub(re, subst)
# Print the result of the substitution
puts result
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Ruby, please visit: http://ruby-doc.org/core-2.2.0/Regexp.html