Hi Brian
On 18/08/2019 19:44, brian m. carlson wrote:
When applying multiple patches with git am, or when rebasing using the
am backend, it's possible that one of our patches has updated a
gitattributes file. Currently, we cache this information, so if a
file in a subsequent patch has attributes applied, the file will be
written out with the attributes in place as of the time we started the
rebase or am operation, not with the attributes applied by the previous
patch. This problem does not occur when using the -m or -i flags to
rebase.
Do you know why -m and -i aren't affected?
To ensure we write the correct data into the working tree, expire the
cache after each patch that touches a path ending in ".gitattributes".
Signed-off-by: brian m. carlson <sandals@xxxxxxxxxxxxxxxxxxxx>
---
apply.c | 7 +++++++
convert.c | 9 ++++++++-
convert.h | 6 ++++++
t/t3400-rebase.sh | 36 ++++++++++++++++++++++++++++++++++++
4 files changed, 57 insertions(+), 1 deletion(-)
diff --git a/apply.c b/apply.c
index cde95369bb..d57bc635e4 100644
--- a/apply.c
+++ b/apply.c
@@ -4643,6 +4643,7 @@ static int apply_patch(struct apply_state *state,
struct patch *list = NULL, **listp = &list;
int skipped_patch = 0;
int res = 0;
+ int flush_attributes = 0;
state->patch_input_file = filename;
if (read_patch_file(&buf, fd) < 0)
@@ -4670,6 +4671,10 @@ static int apply_patch(struct apply_state *state,
patch_stats(state, patch);
*listp = patch;
listp = &patch->next;
+
+ if ((patch->new_name && ends_with_path_components(patch->new_name, GITATTRIBUTES_FILE)) ||
+ (patch->old_name && ends_with_path_components(patch->old_name, GITATTRIBUTES_FILE)))
+ flush_attributes = 1;
style nit - these lines are very long compared to 80 characters
}
else {
if (state->apply_verbosity > verbosity_normal)
@@ -4746,6 +4751,8 @@ static int apply_patch(struct apply_state *state,
if (state->summary && state->apply_verbosity > verbosity_silent)
summary_patch_list(list);
+ if (flush_attributes)
+ reset_parsed_attributes();
end:
free_patch_list(list);
strbuf_release(&buf);
diff --git a/convert.c b/convert.c
index 94ff837649..030e9b81b9 100644
--- a/convert.c
+++ b/convert.c
@@ -1293,10 +1293,11 @@ struct conv_attrs {
const char *working_tree_encoding; /* Supported encoding or default encoding if NULL */
};
+static struct attr_check *check;
I was concerned about the impact adding a file global if we ever want to
multi-thread this for submodules, but looking through the file there are
a couple of others already so this isn't creating a new problem.
Best Wishes
Phillip
+
static void convert_attrs(const struct index_state *istate,
struct conv_attrs *ca, const char *path)
{
- static struct attr_check *check;
struct attr_check_item *ccheck = NULL;
if (!check) {
@@ -1339,6 +1340,12 @@ static void convert_attrs(const struct index_state *istate,
ca->crlf_action = CRLF_AUTO_INPUT;
}
+void reset_parsed_attributes(void)
+{
+ attr_check_free(check);
+ check = NULL;
+}
+
int would_convert_to_git_filter_fd(const struct index_state *istate, const char *path)
{
struct conv_attrs ca;
diff --git a/convert.h b/convert.h
index 831559f10d..3710969d43 100644
--- a/convert.h
+++ b/convert.h
@@ -94,6 +94,12 @@ void convert_to_git_filter_fd(const struct index_state *istate,
int would_convert_to_git_filter_fd(const struct index_state *istate,
const char *path);
+/*
+ * Reset the internal list of attributes used by convert_to_git and
+ * convert_to_working_tree.
+ */
+void reset_parsed_attributes(void);
+
/*****************************************************************
*
* Streaming conversion support
diff --git a/t/t3400-rebase.sh b/t/t3400-rebase.sh
index 80b23fd326..23469cc789 100755
--- a/t/t3400-rebase.sh
+++ b/t/t3400-rebase.sh
@@ -301,6 +301,42 @@ test_expect_success 'rebase --am and --show-current-patch' '
)
'
+test_expect_success 'rebase --am and .gitattributes' '
+ test_create_repo attributes &&
+ (
+ cd attributes &&
+ test_commit init &&
+ git config filter.test.clean "sed -e '\''s/smudged/clean/g'\''" &&
+ git config filter.test.smudge "sed -e '\''s/clean/smudged/g'\''" &&
+
+ test_commit second &&
+ git checkout -b test HEAD^ &&
+
+ echo "*.txt filter=test" >.gitattributes &&
+ git add .gitattributes &&
+ test_commit third &&
+
+ echo "This text is smudged." >a.txt &&
+ git add a.txt &&
+ test_commit fourth &&
+
+ git checkout -b removal HEAD^ &&
+ git rm .gitattributes &&
+ git add -u &&
+ test_commit fifth &&
+ git cherry-pick test &&
+
+ git checkout test &&
+ git rebase master &&
+ grep "smudged" a.txt &&
+
+ git checkout removal &&
+ git reset --hard &&
+ git rebase master &&
+ grep "clean" a.txt
+ )
+'
+
test_expect_success 'rebase--merge.sh and --show-current-patch' '
test_create_repo conflict-merge &&
(
