echo "!" ... what's wrong with the exclamation point ?

[Mildred <ml.mildred593@xxxxxxxxx>]

Hi,

I'm using zsh for some time but I just needed to put an exclamation
point inside double quotes and I get something wierd:

$ echo "abc ! def"
abc ! def
$ echo "abc !"
dquote> "
abc

$ echo "abc !! def"
echo "abc echo "abc
" def"
abc echo abc
zsh: command not found:  def

What's wrong with those exclamation points, and why do they get
evaluated ?

Mildred
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