Hello Thibault Charles, > I have the following text : > text <- ‘’ INFILTRATION INF_BASE > > AIRCHANGE=1 ‘’ becomes: text <- "INFILTRATION INF_BASE\nAIRCHANGE=1" > original <- "INFILTRATION INF_BASE \n AIRCHANGE=1" There are spaces around "\n". That's why text != original Try original <- "INFILTRATION INF_BASE *\n *AIRCHANGE=1" Bye, Sebastian