Add a --no-patch option which shows which changes got removed, added
or moved etc., without showing the diff associated with them.
This allows for using range-diff as a poor man's "shortlog" for
force-pushed branches to see what changed without getting into the
details of what specifically. E.g. diffing the latest forced-push to
"pu" gives us:
$ ./git-range-diff --no-patch b58974365b...711aaa392f | head -n 10
-: ---------- > 1: b613de67c4 diff: differentiate error handling in parse_color_moved_ws
28: c731affab0 ! 2: 23c4bbe28e build: link with curl-defined linker flags
-: ---------- > 3: 14f74d5907 git-worktree.txt: correct linkgit command name
-: ---------- > 4: 29d51e214c sequencer.c: remove a stray semicolon
-: ---------- > 5: b7845cebc0 tree-walk.c: fix overoptimistic inclusion in :(exclude) matching
-: ---------- > 6: 1a550529b1 t/t7510-signed-commit.sh: Add %GP to custom format checks
-: ---------- > 7: 1e690847d1 t/t7510-signed-commit.sh: add signing subkey to Eris Discordia key
9: d13ecb7d81 ! 8: d8ad847421 Add a base implementation of SHA-256 support
10: 3f0382eef8 = 9: cdae1d391c sha256: add an SHA-256 implementation using libgcrypt
11: 2422fd4227 = 10: 7d81aa0857 hash: add an SHA-256 implementation using OpenSSL
That would print a total of 44 lines of output, but the full
range-diff output with --patch is 460 lines.
I thought of implementing --stat too. It would be neat if passing
DIFF_FORMAT_DIFFSTAT just worked, but using that shows the underlying
implementation details of how range-diff works, instead of a useful
diffstat. So I'll leave that to a future change. Such a feature should
be something like a textual summary of the --patch output itself,
e.g.:
N hunks, X insertions(+), Y deletions(-)
This change doesn't update git-format-patch with a --no-patch
option. That can be added later similar to how format-patch first
learned --range-diff, and then --creation-factor in
8631bf1cdd ("format-patch: add --creation-factor tweak for
--range-diff", 2018-07-22). I don't see why anyone would want this for
format-patch, it pretty much defeats the point of range-diff.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx>
---
Documentation/git-range-diff.txt | 4 +++
builtin/log.c | 2 +-
builtin/range-diff.c | 5 +++-
log-tree.c | 2 +-
range-diff.c | 6 ++++-
range-diff.h | 1 +
t/t3206-range-diff.sh | 45 ++++++++++++++++++++++++++++++++
7 files changed, 61 insertions(+), 4 deletions(-)
diff --git a/Documentation/git-range-diff.txt b/Documentation/git-range-diff.txt
index f693930fdb..d0473cbcb1 100644
--- a/Documentation/git-range-diff.txt
+++ b/Documentation/git-range-diff.txt
@@ -57,6 +57,10 @@ to revert to color all lines according to the outer diff markers
See the ``Algorithm`` section below for an explanation why this is
needed.
+--no-patch::
+ Don't show the range-diff itself, only which patches are the
+ same or were added or removed etc.
+
<range1> <range2>::
Compare the commits specified by the two ranges, where
`<range1>` is considered an older version of `<range2>`.
diff --git a/builtin/log.c b/builtin/log.c
index 061d4fd864..e063bcf2dd 100644
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -1096,7 +1096,7 @@ static void make_cover_letter(struct rev_info *rev, int use_stdout,
if (rev->rdiff1) {
fprintf_ln(rev->diffopt.file, "%s", rev->rdiff_title);
show_range_diff(rev->rdiff1, rev->rdiff2,
- rev->creation_factor, 1, &rev->diffopt);
+ rev->creation_factor, 1, 1, &rev->diffopt);
}
}
diff --git a/builtin/range-diff.c b/builtin/range-diff.c
index f01a0be851..70c2761751 100644
--- a/builtin/range-diff.c
+++ b/builtin/range-diff.c
@@ -16,11 +16,14 @@ int cmd_range_diff(int argc, const char **argv, const char *prefix)
int creation_factor = RANGE_DIFF_CREATION_FACTOR_DEFAULT;
struct diff_options diffopt = { NULL };
int simple_color = -1;
+ int patch = 1;
struct option options[] = {
OPT_INTEGER(0, "creation-factor", &creation_factor,
N_("Percentage by which creation is weighted")),
OPT_BOOL(0, "no-dual-color", &simple_color,
N_("use simple diff colors")),
+ OPT_BOOL('p', "patch", &patch,
+ N_("show patch output")),
OPT_END()
};
int i, j, res = 0;
@@ -92,7 +95,7 @@ int cmd_range_diff(int argc, const char **argv, const char *prefix)
}
res = show_range_diff(range1.buf, range2.buf, creation_factor,
- simple_color < 1, &diffopt);
+ simple_color < 1, patch, &diffopt);
strbuf_release(&range1);
strbuf_release(&range2);
diff --git a/log-tree.c b/log-tree.c
index 7a83e99250..843e3ef83b 100644
--- a/log-tree.c
+++ b/log-tree.c
@@ -762,7 +762,7 @@ void show_log(struct rev_info *opt)
next_commentary_block(opt, NULL);
fprintf_ln(opt->diffopt.file, "%s", opt->rdiff_title);
show_range_diff(opt->rdiff1, opt->rdiff2,
- opt->creation_factor, 1, &opt->diffopt);
+ opt->creation_factor, 1, 1, &opt->diffopt);
memcpy(&diff_queued_diff, &dq, sizeof(diff_queued_diff));
}
diff --git a/range-diff.c b/range-diff.c
index bd8083f2d1..c1bfa593ce 100644
--- a/range-diff.c
+++ b/range-diff.c
@@ -436,6 +436,7 @@ static struct strbuf *output_prefix_cb(struct diff_options *opt, void *data)
int show_range_diff(const char *range1, const char *range2,
int creation_factor, int dual_color,
+ int patch,
struct diff_options *diffopt)
{
int res = 0;
@@ -453,7 +454,10 @@ int show_range_diff(const char *range1, const char *range2,
struct strbuf indent = STRBUF_INIT;
memcpy(&opts, diffopt, sizeof(opts));
- opts.output_format = DIFF_FORMAT_PATCH;
+ if (patch)
+ opts.output_format = DIFF_FORMAT_PATCH;
+ else
+ opts.output_format = DIFF_FORMAT_NO_OUTPUT;
opts.flags.suppress_diff_headers = 1;
opts.flags.dual_color_diffed_diffs = dual_color;
opts.output_prefix = output_prefix_cb;
diff --git a/range-diff.h b/range-diff.h
index 190593f0c7..99bbc1cd9f 100644
--- a/range-diff.h
+++ b/range-diff.h
@@ -7,6 +7,7 @@
int show_range_diff(const char *range1, const char *range2,
int creation_factor, int dual_color,
+ int patch,
struct diff_options *diffopt);
#endif
diff --git a/t/t3206-range-diff.sh b/t/t3206-range-diff.sh
index 6aae364171..8f8be0c57f 100755
--- a/t/t3206-range-diff.sh
+++ b/t/t3206-range-diff.sh
@@ -122,6 +122,17 @@ test_expect_success 'changed commit' '
test_cmp expected actual
'
+test_expect_success 'changed commit --no-patch' '
+ git range-diff --no-color --no-patch topic...changed >actual &&
+ cat >expected <<-EOF &&
+ 1: 4de457d = 1: a4b3333 s/5/A/
+ 2: fccce22 = 2: f51d370 s/4/A/
+ 3: 147e64e ! 3: 0559556 s/11/B/
+ 4: a63e992 ! 4: d966c5c s/12/B/
+ EOF
+ test_cmp expected actual
+'
+
test_expect_success 'changed commit with sm config' '
git range-diff --no-color --submodule=log topic...changed >actual &&
cat >expected <<-EOF &&
@@ -151,6 +162,17 @@ test_expect_success 'changed commit with sm config' '
test_cmp expected actual
'
+test_expect_success 'changed commit with sm config --no-patch' '
+ git range-diff --no-color --no-patch --submodule=log topic...changed >actual &&
+ cat >expected <<-EOF &&
+ 1: 4de457d = 1: a4b3333 s/5/A/
+ 2: fccce22 = 2: f51d370 s/4/A/
+ 3: 147e64e ! 3: 0559556 s/11/B/
+ 4: a63e992 ! 4: d966c5c s/12/B/
+ EOF
+ test_cmp expected actual
+'
+
test_expect_success 'no commits on one side' '
git commit --amend -m "new message" &&
git range-diff master HEAD@{1} HEAD
@@ -176,6 +198,17 @@ test_expect_success 'changed message' '
test_cmp expected actual
'
+test_expect_success 'changed message --no-patch' '
+ git range-diff --no-color --no-patch topic...changed-message >actual &&
+ sed s/Z/\ /g >expected <<-EOF &&
+ 1: 4de457d = 1: f686024 s/5/A/
+ 2: fccce22 ! 2: 4ab067d s/4/A/
+ 3: 147e64e = 3: b9cb956 s/11/B/
+ 4: a63e992 = 4: 8add5f1 s/12/B/
+ EOF
+ test_cmp expected actual
+'
+
test_expect_success 'dual-coloring' '
sed -e "s|^:||" >expect <<-\EOF &&
:<YELLOW>1: a4b3333 = 1: f686024 s/5/A/<RESET>
@@ -215,6 +248,18 @@ test_expect_success 'dual-coloring' '
test_cmp expect actual
'
+test_expect_success 'dual-coloring --no-patch' '
+ sed -e "s|^:||" >expect <<-\EOF &&
+ :<YELLOW>1: a4b3333 = 1: f686024 s/5/A/<RESET>
+ :<RED>2: f51d370 <RESET><YELLOW>!<RESET><GREEN> 2: 4ab067d<RESET><YELLOW> s/4/A/<RESET>
+ :<RED>3: 0559556 <RESET><YELLOW>!<RESET><GREEN> 3: b9cb956<RESET><YELLOW> s/11/B/<RESET>
+ :<RED>4: d966c5c <RESET><YELLOW>!<RESET><GREEN> 4: 8add5f1<RESET><YELLOW> s/12/B/<RESET>
+ EOF
+ git range-diff changed...changed-message --color --dual-color --no-patch >actual.raw &&
+ test_decode_color >actual <actual.raw &&
+ test_cmp expect actual
+'
+
for prev in topic master..topic
do
test_expect_success "format-patch --range-diff=$prev" '
--
2.19.1.930.g4563a0d9d0
