How to change Arduino IDE menu font size?

On Linux, I was able to solve this by creating a file called "fontsettings" with the following content:

style "small" {
        font_name = "Sans Condensed 8"
}
class "GtkWidget" style "small"

Now I have to

export GTK2_RC_FILES=$GTK2_RC_FILES:./fontsettings

and then launch Arduino. Of course you can integrate the export statement into the Arduino launch script.

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