The trim whitespace icon is really out of place because:

• Larger than surrounding icons
• Lines are bolder than surrounding icons
• Not very clear what it means
• When it is disabled it looks like the equality sign

I am also not convinced if an icon is needed for this since it is very hard to describe visually what this action is supposed to do. Why not put it under the elipses where you can have text so it is much clearer?

fyi @chryw @joaomoreno for ux feedback