diff: teach tree-diff a max-depth parameter

2025-08-07T22:29:35Z

When you are doing a tree-diff, there are basically two options: do not recurse into subtrees at all, or recurse indefinitely. While most callers would want to always recurse and see full pathnames, some may want the efficiency of looking only at a particular level of the tree. This is currently easy to do for the top-level (just turn off recursion), but you cannot say "show me what changed in subdir/, but do not recurse". This patch adds a max-depth parameter which is measured from the closest pathspec match, so that you can do: git log --raw --max-depth=1 -- a/b/c and see the raw output for a/b/c/, but not those of a/b/c/d/ (instead of the raw output you would see for a/b/c/d). Co-authored-by: Toon Claes Signed-off-by: Toon Claes Signed-off-by: Junio C Hamano

git/t/t4072-diff-max-depth.sh, branch jch

diff: teach tree-diff a max-depth parameter