From a1dfa5448d583bbfd1ec45642a4495ad499970c9 Mon Sep 17 00:00:00 2001 From: Jeff King Date: Thu, 7 Aug 2025 22:52:58 +0200 Subject: diff: teach tree-diff a max-depth parameter 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 --- diff-lib.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'diff-lib.c') diff --git a/diff-lib.c b/diff-lib.c index 244468dd1a..b8f8f3bc31 100644 --- a/diff-lib.c +++ b/diff-lib.c @@ -115,6 +115,9 @@ void run_diff_files(struct rev_info *revs, unsigned int option) uint64_t start = getnanotime(); struct index_state *istate = revs->diffopt.repo->index; + if (revs->diffopt.max_depth_valid) + die(_("max-depth is not supported for worktree diffs")); + diff_set_mnemonic_prefix(&revs->diffopt, "i/", "w/"); refresh_fsmonitor(istate); @@ -560,6 +563,8 @@ static int diff_cache(struct rev_info *revs, opts.dst_index = NULL; opts.pathspec = &revs->diffopt.pathspec; opts.pathspec->recursive = 1; + if (revs->diffopt.max_depth_valid) + die(_("max-depth is not supported for index diffs")); init_tree_desc(&t, &tree->object.oid, tree->buffer, tree->size); return unpack_trees(1, &t, &opts); -- cgit v1.2.3