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-rw-r--r--diff.c48
-rwxr-xr-xt/t4030-diff-textconv.sh6
2 files changed, 38 insertions, 16 deletions
diff --git a/diff.c b/diff.c
index d1fd594..6f01595 100644
--- a/diff.c
+++ b/diff.c
@@ -294,18 +294,8 @@ static int fill_mmfile(mmfile_t *mf, struct diff_filespec *one)
else if (diff_populate_filespec(one, 0))
return -1;
- diff_filespec_load_driver(one);
- if (one->driver->textconv) {
- size_t size;
- mf->ptr = run_textconv(one->driver->textconv, one, &size);
- if (!mf->ptr)
- return -1;
- mf->size = size;
- }
- else {
- mf->ptr = one->data;
- mf->size = one->size;
- }
+ mf->ptr = one->data;
+ mf->size = one->size;
return 0;
}
@@ -1323,6 +1313,14 @@ void diff_set_mnemonic_prefix(struct diff_options *options, const char *a, const
options->b_prefix = b;
}
+static const char *get_textconv(struct diff_filespec *one)
+{
+ if (!DIFF_FILE_VALID(one))
+ return NULL;
+ diff_filespec_load_driver(one);
+ return one->driver->textconv;
+}
+
static void builtin_diff(const char *name_a,
const char *name_b,
struct diff_filespec *one,
@@ -1337,6 +1335,7 @@ static void builtin_diff(const char *name_a,
const char *set = diff_get_color_opt(o, DIFF_METAINFO);
const char *reset = diff_get_color_opt(o, DIFF_RESET);
const char *a_prefix, *b_prefix;
+ const char *textconv_one, *textconv_two;
diff_set_mnemonic_prefix(o, "a/", "b/");
if (DIFF_OPT_TST(o, REVERSE_DIFF)) {
@@ -1390,8 +1389,12 @@ static void builtin_diff(const char *name_a,
if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0)
die("unable to read files to diff");
+ textconv_one = get_textconv(one);
+ textconv_two = get_textconv(two);
+
if (!DIFF_OPT_TST(o, TEXT) &&
- (diff_filespec_is_binary(one) || diff_filespec_is_binary(two))) {
+ ( (diff_filespec_is_binary(one) && !textconv_one) ||
+ (diff_filespec_is_binary(two) && !textconv_two) )) {
/* Quite common confusing case */
if (mf1.size == mf2.size &&
!memcmp(mf1.ptr, mf2.ptr, mf1.size))
@@ -1412,6 +1415,21 @@ static void builtin_diff(const char *name_a,
struct emit_callback ecbdata;
const struct userdiff_funcname *pe;
+ if (textconv_one) {
+ size_t size;
+ mf1.ptr = run_textconv(textconv_one, one, &size);
+ if (!mf1.ptr)
+ die("unable to read files to diff");
+ mf1.size = size;
+ }
+ if (textconv_two) {
+ size_t size;
+ mf2.ptr = run_textconv(textconv_two, two, &size);
+ if (!mf2.ptr)
+ die("unable to read files to diff");
+ mf2.size = size;
+ }
+
pe = diff_funcname_pattern(one);
if (!pe)
pe = diff_funcname_pattern(two);
@@ -1443,6 +1461,10 @@ static void builtin_diff(const char *name_a,
&xpp, &xecfg, &ecb);
if (DIFF_OPT_TST(o, COLOR_DIFF_WORDS))
free_diff_words_data(&ecbdata);
+ if (textconv_one)
+ free(mf1.ptr);
+ if (textconv_two)
+ free(mf2.ptr);
}
free_ab_and_return:
diff --git a/t/t4030-diff-textconv.sh b/t/t4030-diff-textconv.sh
index 1b09648..090a21d 100755
--- a/t/t4030-diff-textconv.sh
+++ b/t/t4030-diff-textconv.sh
@@ -52,7 +52,7 @@ test_expect_success 'setup textconv filters' '
git config diff.fail.textconv false
'
-test_expect_failure 'diff produces text' '
+test_expect_success 'diff produces text' '
git diff HEAD^ HEAD >diff &&
find_diff <diff >actual &&
test_cmp expect.text actual
@@ -64,7 +64,7 @@ test_expect_success 'diff-tree produces binary' '
test_cmp expect.binary actual
'
-test_expect_failure 'log produces text' '
+test_expect_success 'log produces text' '
git log -1 -p >log &&
find_diff <log >actual &&
test_cmp expect.text actual
@@ -80,7 +80,7 @@ cat >expect.stat <<'EOF'
file | Bin 2 -> 4 bytes
1 files changed, 0 insertions(+), 0 deletions(-)
EOF
-test_expect_failure 'diffstat does not run textconv' '
+test_expect_success 'diffstat does not run textconv' '
echo file diff=fail >.gitattributes &&
git diff --stat HEAD^ HEAD >actual &&
test_cmp expect.stat actual