How to add a new word to QTextEdit with "append"

[yagabey]

Hello,

How can i append a line or word in QTextEdit with append(or another way) without making a new paragraph.I mean;
let's say in QTextEdit we have "Hello":

Hello

I wanna add "world":

textEdit->append("world")

textEdit->append("world")

To copy to clipboard, switch view to plain text mode 

will give the result:

Hello
world

but i want:

Hello world