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Merge branch 'jk/ext-diff-with-relative' into maint-2.39

Browse Source 
"git diff --relative" did not mix well with "git diff --ext-diff",
which has been corrected.

* jk/ext-diff-with-relative:
  diff: drop "name" parameter from prepare_temp_file()
  diff: clean up external-diff argv setup
  diff: use filespec path to set up tempfiles for ext-diff
This commit is contained in:
Junio C Hamano 2023-02-14 14:15:50 -08:00
commit f8382a6396
2 changed files with 42 additions and 17 deletions
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30
diff.c
View File

@ -4213,7 +4213,6 @@ static void prep_temp_blob(struct index_state *istate,
}
static struct diff_tempfile *prepare_temp_file(struct repository *r,
const char *name,
struct diff_filespec *one)
{
struct diff_tempfile *temp = claim_diff_tempfile();
@ -4231,18 +4230,18 @@ static struct diff_tempfile *prepare_temp_file(struct repository *r,
if (!S_ISGITLINK(one->mode) &&
(!one->oid_valid ||
reuse_worktree_file(r->index, name, &one->oid, 1))) {
reuse_worktree_file(r->index, one->path, &one->oid, 1))) {
struct stat st;
if (lstat(name, &st) < 0) {
if (lstat(one->path, &st) < 0) {
if (errno == ENOENT)
goto not_a_valid_file;
die_errno("stat(%s)", name);
die_errno("stat(%s)", one->path);
}
if (S_ISLNK(st.st_mode)) {
struct strbuf sb = STRBUF_INIT;
if (strbuf_readlink(&sb, name, st.st_size) < 0)
die_errno("readlink(%s)", name);
prep_temp_blob(r->index, name, temp, sb.buf, sb.len,
if (strbuf_readlink(&sb, one->path, st.st_size) < 0)
die_errno("readlink(%s)", one->path);
prep_temp_blob(r->index, one->path, temp, sb.buf, sb.len,
(one->oid_valid ?
&one->oid : null_oid()),
(one->oid_valid ?
@ -4251,7 +4250,7 @@ static struct diff_tempfile *prepare_temp_file(struct repository *r,
}
else {
/* we can borrow from the file in the work tree */
temp->name = name;
temp->name = one->path;
if (!one->oid_valid)
oid_to_hex_r(temp->hex, null_oid());
else
@ -4269,7 +4268,7 @@ static struct diff_tempfile *prepare_temp_file(struct repository *r,
else {
if (diff_populate_filespec(r, one, NULL))
die("cannot read data blob for %s", one->path);
prep_temp_blob(r->index, name, temp,
prep_temp_blob(r->index, one->path, temp,
one->data, one->size,
&one->oid, one->mode);
}
@ -4278,10 +4277,9 @@ static struct diff_tempfile *prepare_temp_file(struct repository *r,
static void add_external_diff_name(struct repository *r,
struct strvec *argv,
const char *name,
struct diff_filespec *df)
{
struct diff_tempfile *temp = prepare_temp_file(r, name, df);
struct diff_tempfile *temp = prepare_temp_file(r, df);
strvec_push(argv, temp->name);
strvec_push(argv, temp->hex);
strvec_push(argv, temp->mode);
@ -4308,11 +4306,9 @@ static void run_external_diff(const char *pgm,
strvec_push(&cmd.args, name);
if (one && two) {
add_external_diff_name(o->repo, &cmd.args, name, one);
if (!other)
add_external_diff_name(o->repo, &cmd.args, name, two);
else {
add_external_diff_name(o->repo, &cmd.args, other, two);
add_external_diff_name(o->repo, &cmd.args, one);
add_external_diff_name(o->repo, &cmd.args, two);
if (other) {
strvec_push(&cmd.args, other);
strvec_push(&cmd.args, xfrm_msg);
}
@ -7037,7 +7033,7 @@ static char *run_textconv(struct repository *r,
struct strbuf buf = STRBUF_INIT;
int err = 0;
temp = prepare_temp_file(r, spec->path, spec);
temp = prepare_temp_file(r, spec);
strvec_push(&child.args, pgm);
strvec_push(&child.args, temp->name);

29
t/t4045-diff-relative.sh
View File

@ -162,6 +162,35 @@ check_diff_relative_option subdir file2 true --no-relative --relative
check_diff_relative_option . file2 false --no-relative --relative=subdir
check_diff_relative_option . file2 true --no-relative --relative=subdir
test_expect_success 'external diff with --relative' '
test_when_finished "git reset --hard" &&
echo changed >file1 &&
echo changed >subdir/file2 &&
write_script mydiff <<-\EOF &&
# hacky pretend diff; the goal here is just to make sure we got
# passed sensible input that we _could_ diff, without relying on
# the specific output of a system diff tool.
echo "diff a/$1 b/$1" &&
echo "--- a/$1" &&
echo "+++ b/$1" &&
echo "@@ -1 +0,0 @@" &&
sed "s/^/-/" "$2" &&
sed "s/^/+/" "$5"
EOF
cat >expect <<-\EOF &&
diff a/file2 b/file2
--- a/file2
+++ b/file2
@@ -1 +0,0 @@
-other content
+changed
EOF
GIT_EXTERNAL_DIFF=./mydiff git diff --relative=subdir >actual &&
test_cmp expect actual
'
test_expect_success 'setup diff --relative unmerged' '
test_commit zero file0 &&
test_commit base subdir/file0 &&