I have the following curve in an instance of Tikz:
\draw[->,snake=snake, segment amplitude=.2mm, segment length=1.5mm, line after snake=0.5mm] (2.8,0.9) -- (2.4,0.9);
Since Tikz's library Snakes has been superseeded by decorations, I would like to do the same drawing with decorations.pathmorphing. However I don't know how to do it. I would appreciate some help.