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-rw-r--r--diff.c21
-rwxr-xr-xt/t4015-diff-whitespace.sh37
-rwxr-xr-xt/t4043-diff-rename-binary.sh45
3 files changed, 98 insertions, 5 deletions
diff --git a/diff.c b/diff.c
index c6b5fb3..2327cea 100644
--- a/diff.c
+++ b/diff.c
@@ -1837,6 +1837,7 @@ static void builtin_diff(const char *name_a,
struct diff_filespec *one,
struct diff_filespec *two,
const char *xfrm_msg,
+ int must_show_header,
struct diff_options *o,
int complete_rewrite)
{
@@ -1896,16 +1897,19 @@ static void builtin_diff(const char *name_a,
strbuf_addf(&header, "%s%snew file mode %06o%s\n", line_prefix, set, two->mode, reset);
if (xfrm_msg)
strbuf_addstr(&header, xfrm_msg);
+ must_show_header = 1;
}
else if (lbl[1][0] == '/') {
strbuf_addf(&header, "%s%sdeleted file mode %06o%s\n", line_prefix, set, one->mode, reset);
if (xfrm_msg)
strbuf_addstr(&header, xfrm_msg);
+ must_show_header = 1;
}
else {
if (one->mode != two->mode) {
strbuf_addf(&header, "%s%sold mode %06o%s\n", line_prefix, set, one->mode, reset);
strbuf_addf(&header, "%s%snew mode %06o%s\n", line_prefix, set, two->mode, reset);
+ must_show_header = 1;
}
if (xfrm_msg)
strbuf_addstr(&header, xfrm_msg);
@@ -1935,8 +1939,11 @@ static void builtin_diff(const char *name_a,
die("unable to read files to diff");
/* Quite common confusing case */
if (mf1.size == mf2.size &&
- !memcmp(mf1.ptr, mf2.ptr, mf1.size))
+ !memcmp(mf1.ptr, mf2.ptr, mf1.size)) {
+ if (must_show_header)
+ fprintf(o->file, "%s", header.buf);
goto free_ab_and_return;
+ }
fprintf(o->file, "%s", header.buf);
strbuf_reset(&header);
if (DIFF_OPT_TST(o, BINARY))
@@ -1954,7 +1961,7 @@ static void builtin_diff(const char *name_a,
struct emit_callback ecbdata;
const struct userdiff_funcname *pe;
- if (!DIFF_XDL_TST(o, WHITESPACE_FLAGS)) {
+ if (!DIFF_XDL_TST(o, WHITESPACE_FLAGS) || must_show_header) {
fprintf(o->file, "%s", header.buf);
strbuf_reset(&header);
}
@@ -2568,6 +2575,7 @@ static void fill_metainfo(struct strbuf *msg,
struct diff_filespec *two,
struct diff_options *o,
struct diff_filepair *p,
+ int *must_show_header,
int use_color)
{
const char *set = diff_get_color(use_color, DIFF_METAINFO);
@@ -2575,11 +2583,11 @@ static void fill_metainfo(struct strbuf *msg,
struct strbuf *msgbuf;
char *line_prefix = "";
+ *must_show_header = 1;
if (o->output_prefix) {
msgbuf = o->output_prefix(o, o->output_prefix_data);
line_prefix = msgbuf->buf;
}
-
strbuf_init(msg, PATH_MAX * 2 + 300);
switch (p->status) {
case DIFF_STATUS_COPIED:
@@ -2613,7 +2621,7 @@ static void fill_metainfo(struct strbuf *msg,
/* fallthru */
default:
/* nothing */
- ;
+ *must_show_header = 0;
}
if (one && two && hashcmp(one->sha1, two->sha1)) {
int abbrev = DIFF_OPT_TST(o, FULL_INDEX) ? 40 : DEFAULT_ABBREV;
@@ -2646,6 +2654,7 @@ static void run_diff_cmd(const char *pgm,
{
const char *xfrm_msg = NULL;
int complete_rewrite = (p->status == DIFF_STATUS_MODIFIED) && p->score;
+ int must_show_header = 0;
if (!DIFF_OPT_TST(o, ALLOW_EXTERNAL))
pgm = NULL;
@@ -2661,6 +2670,7 @@ static void run_diff_cmd(const char *pgm,
* external diff driver
*/
fill_metainfo(msg, name, other, one, two, o, p,
+ &must_show_header,
DIFF_OPT_TST(o, COLOR_DIFF) && !pgm);
xfrm_msg = msg->len ? msg->buf : NULL;
}
@@ -2672,7 +2682,8 @@ static void run_diff_cmd(const char *pgm,
}
if (one && two)
builtin_diff(name, other ? other : name,
- one, two, xfrm_msg, o, complete_rewrite);
+ one, two, xfrm_msg, must_show_header,
+ o, complete_rewrite);
else
fprintf(o->file, "* Unmerged path %s\n", name);
}
diff --git a/t/t4015-diff-whitespace.sh b/t/t4015-diff-whitespace.sh
index e92eab0..935d101 100755
--- a/t/t4015-diff-whitespace.sh
+++ b/t/t4015-diff-whitespace.sh
@@ -438,6 +438,43 @@ test_expect_success 'whitespace-only changes not reported' '
test_cmp expect actual
'
+cat <<EOF >expect
+diff --git a/x b/z
+similarity index NUM%
+rename from x
+rename to z
+index 380c32a..a97b785 100644
+EOF
+test_expect_success 'whitespace-only changes reported across renames' '
+ git reset --hard &&
+ for i in 1 2 3 4 5 6 7 8 9; do echo "$i$i$i$i$i$i"; done >x &&
+ git add x &&
+ git commit -m "base" &&
+ sed -e "5s/^/ /" x >z &&
+ git rm x &&
+ git add z &&
+ git diff -w -M --cached |
+ sed -e "/^similarity index /s/[0-9][0-9]*/NUM/" >actual &&
+ test_cmp expect actual
+'
+
+cat >expected <<\EOF
+diff --git a/empty b/void
+similarity index 100%
+rename from empty
+rename to void
+EOF
+
+test_expect_success 'rename empty' '
+ git reset --hard &&
+ >empty &&
+ git add empty &&
+ git commit -m empty &&
+ git mv empty void &&
+ git diff -w --cached -M >current &&
+ test_cmp expected current
+'
+
test_expect_success 'combined diff with autocrlf conversion' '
git reset --hard &&
diff --git a/t/t4043-diff-rename-binary.sh b/t/t4043-diff-rename-binary.sh
new file mode 100755
index 0000000..0601281
--- /dev/null
+++ b/t/t4043-diff-rename-binary.sh
@@ -0,0 +1,45 @@
+#!/bin/sh
+#
+# Copyright (c) 2010 Jakub Narebski, Christian Couder
+#
+
+test_description='Move a binary file'
+
+. ./test-lib.sh
+
+
+test_expect_success 'prepare repository' '
+ git init &&
+ echo foo > foo &&
+ echo "barQ" | q_to_nul > bar &&
+ git add . &&
+ git commit -m "Initial commit"
+'
+
+test_expect_success 'move the files into a "sub" directory' '
+ mkdir sub &&
+ git mv bar foo sub/ &&
+ git commit -m "Moved to sub/"
+'
+
+cat > expected <<\EOF
+ bar => sub/bar | Bin 5 -> 5 bytes
+ foo => sub/foo | 0
+ 2 files changed, 0 insertions(+), 0 deletions(-)
+
+diff --git a/bar b/sub/bar
+similarity index 100%
+rename from bar
+rename to sub/bar
+diff --git a/foo b/sub/foo
+similarity index 100%
+rename from foo
+rename to sub/foo
+EOF
+
+test_expect_success 'git show -C -C report renames' '
+ git show -C -C --raw --binary --stat | tail -n 12 > current &&
+ test_cmp expected current
+'
+
+test_done