How to disable com.apple.quarantine on Catalina

Question

I am constantly downloading files from our servers and they get marked with the com.apple.quarantine attribute.

How can I forever (and ever, until the universe collapses) prevent the OS from setting this attribute?

• I know why it is there
• I know how to remove it
• There are other answers, that don't work on Catalina, regarding this, like Disable the use of the "com.apple.quarantine" extended attribute on Mojave so it is not a duplicate

It looks like on Catalina the 'defaults write com.apple.LaunchServices LSQuarantine -bool NO' solution doesn't work.

Answer 1

As a workaround, I'd create a Automator Folder Action, attached to the Downloads folder, with a Run AppleScript action, setting Shell: /bin/bash and Pass input: as arguments, using the example bash code below, until a more permanent answer comes about.

for f in "$@"
do
    [ ! -d "${f}.download" ] || continue
    xattr -d com.apple.quarantine "$f"
done

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_{Note: The example bash code contains limited error handling. The onus is upon the user to add any error handling as may be appropriate, needed or wanted.}