diff --git a/line-log.c b/line-log.c
index 3aff1849e7..9010e00950 100644
--- a/line-log.c
+++ b/line-log.c
@@ -737,6 +737,38 @@ static struct line_log_data *lookup_line_range(struct rev_info *revs,
return ret;
}
+static int same_paths_in_pathspec_and_range(struct pathspec *pathspec,
+ struct line_log_data *range)
+{
+ int i;
+ struct line_log_data *r;
+
+ for (i = 0, r = range; i < pathspec->nr && r; i++, r = r->next)
+ if (strcmp(pathspec->items[i].match, r->path))
+ return 0;
+ if (i < pathspec->nr || r)
+ /* different number of pathspec items and ranges */
+ return 0;
+
+ return 1;
+}
+
+static void parse_pathspec_from_ranges(struct pathspec *pathspec,
+ struct line_log_data *range)
+{
+ struct line_log_data *r;
+ struct argv_array array = ARGV_ARRAY_INIT;
+ const char **paths;
+
+ for (r = range; r; r = r->next)
+ argv_array_push(&array, r->path);
+ paths = argv_array_detach(&array);
+
+ parse_pathspec(pathspec, 0, PATHSPEC_PREFER_FULL, "", paths);
+ /* strings are now owned by pathspec */
+ free(paths);
+}
+
void line_log_init(struct rev_info *rev, const char *prefix, struct string_list *args)
{
struct commit *commit = NULL;
@@ -746,20 +778,7 @@ void line_log_init(struct rev_info *rev, const char *prefix, struct string_list
range = parse_lines(rev->diffopt.repo, commit, prefix, args);
add_line_range(rev, commit, range);
- if (!rev->diffopt.detect_rename) {
- struct line_log_data *r;
- struct argv_array array = ARGV_ARRAY_INIT;
- const char **paths;
-
- for (r = range; r; r = r->next)
- argv_array_push(&array, r->path);
- paths = argv_array_detach(&array);
-
- parse_pathspec(&rev->diffopt.pathspec, 0,
- PATHSPEC_PREFER_FULL, "", paths);
- /* strings are now owned by pathspec */
- free(paths);
- }
+ parse_pathspec_from_ranges(&rev->diffopt.pathspec, range);
}
static void move_diff_queue(struct diff_queue_struct *dst,
@@ -817,15 +836,29 @@ static void queue_diffs(struct line_log_data *range,
struct diff_queue_struct *queue,
struct commit *commit, struct commit *parent)
{
+ struct object_id *tree_oid, *parent_tree_oid;
+
assert(commit);
+ tree_oid = get_commit_tree_oid(commit);
+ parent_tree_oid = parent ? get_commit_tree_oid(parent) : NULL;
+
+ if (opt->detect_rename &&
+ !same_paths_in_pathspec_and_range(&opt->pathspec, range)) {
+ clear_pathspec(&opt->pathspec);
+ parse_pathspec_from_ranges(&opt->pathspec, range);
+ }
DIFF_QUEUE_CLEAR(&diff_queued_diff);
- diff_tree_oid(parent ? get_commit_tree_oid(parent) : NULL,
- get_commit_tree_oid(commit), "", opt);
- if (opt->detect_rename) {
+ diff_tree_oid(parent_tree_oid, tree_oid, "", opt);
+ if (opt->detect_rename && diff_might_be_rename()) {
+ /* must look at the full tree diff to detect renames */
+ clear_pathspec(&opt->pathspec);
+ DIFF_QUEUE_CLEAR(&diff_queued_diff);
+
+ diff_tree_oid(parent_tree_oid, tree_oid, "", opt);
+
filter_diffs_for_paths(range, 1);
- if (diff_might_be_rename())
- diffcore_std(opt);
+ diffcore_std(opt);
filter_diffs_for_paths(range, 0);
}
move_diff_queue(queue, &diff_queued_diff);
diff --git a/t/t4211-line-log.sh b/t/t4211-line-log.sh
index 1db7bd0f59..8319163744 100755
--- a/t/t4211-line-log.sh
+++ b/t/t4211-line-log.sh
@@ -132,4 +132,86 @@ test_expect_success '--raw is forbidden' '
test_must_fail git log -L1,24:b.c --raw
'
+test_expect_success 'setup for checking fancy rename following' '
+ git checkout --orphan moves-start &&
+ git reset --hard &&
+
+ printf "%s\n" 12 13 14 15 b c d e >file-1 &&
+ printf "%s\n" 22 23 24 25 B C D E >file-2 &&
+ git add file-1 file-2 &&
+ test_tick &&
+ git commit -m "Add file-1 and file-2" &&
+ oid_add_f1_f2=$(git rev-parse --short HEAD) &&
+
+ git checkout -b moves-main &&
+ printf "%s\n" 11 12 13 14 15 b c d e >file-1 &&
+ git commit -a -m "Modify file-1 on main" &&
+ oid_mod_f1_main=$(git rev-parse --short HEAD) &&
+
+ printf "%s\n" 21 22 23 24 25 B C D E >file-2 &&
+ git commit -a -m "Modify file-2 on main #1" &&
+ oid_mod_f2_main_1=$(git rev-parse --short HEAD) &&
+
+ git mv file-1 renamed-1 &&
+ git commit -m "Rename file-1 to renamed-1 on main" &&
+
+ printf "%s\n" 11 12 13 14 15 b c d e f >renamed-1 &&
+ git commit -a -m "Modify renamed-1 on main" &&
+ oid_mod_r1_main=$(git rev-parse --short HEAD) &&
+
+ printf "%s\n" 21 22 23 24 25 B C D E F >file-2 &&
+ git commit -a -m "Modify file-2 on main #2" &&
+ oid_mod_f2_main_2=$(git rev-parse --short HEAD) &&
+
+ git checkout -b moves-side moves-start &&
+ printf "%s\n" 12 13 14 15 16 b c d e >file-1 &&
+ git commit -a -m "Modify file-1 on side #1" &&
+ oid_mod_f1_side_1=$(git rev-parse --short HEAD) &&
+
+ printf "%s\n" 22 23 24 25 26 B C D E >file-2 &&
+ git commit -a -m "Modify file-2 on side" &&
+ oid_mod_f2_side=$(git rev-parse --short HEAD) &&
+
+ git mv file-2 renamed-2 &&
+ git commit -m "Rename file-2 to renamed-2 on side" &&
+
+ printf "%s\n" 12 13 14 15 16 a b c d e >file-1 &&
+ git commit -a -m "Modify file-1 on side #2" &&
+ oid_mod_f1_side_2=$(git rev-parse --short HEAD) &&
+
+ printf "%s\n" 22 23 24 25 26 A B C D E >renamed-2 &&
+ git commit -a -m "Modify renamed-2 on side" &&
+ oid_mod_r2_side=$(git rev-parse --short HEAD) &&
+
+ git checkout moves-main &&
+ git merge moves-side &&
+ oid_merge=$(git rev-parse --short HEAD)
+'
+
+test_expect_success 'fancy rename following #1' '
+ cat >expect <<-EOF &&
+ $oid_merge Merge branch '\''moves-side'\'' into moves-main
+ $oid_mod_f1_side_2 Modify file-1 on side #2
+ $oid_mod_f1_side_1 Modify file-1 on side #1
+ $oid_mod_r1_main Modify renamed-1 on main
+ $oid_mod_f1_main Modify file-1 on main
+ $oid_add_f1_f2 Add file-1 and file-2
+ EOF
+ git log -L1:renamed-1 --oneline --no-patch >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'fancy rename following #2' '
+ cat >expect <<-EOF &&
+ $oid_merge Merge branch '\''moves-side'\'' into moves-main
+ $oid_mod_r2_side Modify renamed-2 on side
+ $oid_mod_f2_side Modify file-2 on side
+ $oid_mod_f2_main_2 Modify file-2 on main #2
+ $oid_mod_f2_main_1 Modify file-2 on main #1
+ $oid_add_f1_f2 Add file-1 and file-2
+ EOF
+ git log -L1:renamed-2 --oneline --no-patch >actual &&
+ test_cmp expect actual
+'
+
test_done