Support unified format like kubectl diff for difftool compatibility (Meld)

[Llyth]

Hello,

kubectl diff by default output in an unified format like diffutils does. It also supports KUBECTL_EXTERNAL_DIFF environment variable which can be used to pass a gui tool like Meld.

Is it possible to add an unified format option to --output ?

Resources:

• https://kubernetes.io/docs/reference/kubectl/generated/kubectl_diff/
• https://www.gnu.org/software/diffutils/manual/diffutils.html#Unified-Format
• https://meldmerge.org/

Best regards.