Dear Maintainer,

When debdiff is comparing two packages where a symbolic link was added,
it shows the entire contents of the target. This can clutter the debdiff
unnecessarily.

It would be preferred if debdiff could do this as Git does it. Attached
are two patches which demonstrates the difference. While one was
uploaded to Ubuntu and the other was in a Salsa MP, the point still stands.

Scaled up to the size of patches.ubuntu.com, Launchpad, or a similar
service, this would definitely save some space.

It is also worth noting that patch(1) applies the two patch files I gave
differently.

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$ patch -p1 < ../current-functionality.diff
patching file debian/changelog
patching file scripts/focal

$ ls -lah scripts/focal
-rw-rw-r-- 1 tsimonq2 tsimonq2 7.7K Oct 18 15:06 scripts/focal

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$ patch -p1 < ../intended-functionality.diff
patching file debian/changelog
patching symbolic link scripts/focal

$ ls -lah scripts/focal
lrwxrwxrwx 1 tsimonq2 tsimonq2 5 Oct 18 15:09 scripts/focal -> gutsy

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That could definitely make an impact in a sponsorship workflow.