From: Elijah Newren <newren@xxxxxxxxx>
Much as `git ls-files` has a -z option, let's add one to merge-tree so
that the conflict-info section can be NUL terminated (and avoid quoting
of unusual filenames).
Signed-off-by: Elijah Newren <newren@xxxxxxxxx>
---
Documentation/git-merge-tree.txt | 21 +++++++++++++----
builtin/merge-tree.c | 6 +++--
t/t4301-merge-tree-write-tree.sh | 40 ++++++++++++++++++++++++++++++++
3 files changed, 61 insertions(+), 6 deletions(-)
diff --git a/Documentation/git-merge-tree.txt b/Documentation/git-merge-tree.txt
index b89aabdb98e..75b57f8abab 100644
--- a/Documentation/git-merge-tree.txt
+++ b/Documentation/git-merge-tree.txt
@@ -40,6 +40,12 @@ After the merge completes, a new toplevel tree object is created. See
OPTIONS
-------
+-z::
+ Do not quote filenames in the <Conflicted file info> section,
+ and end each filename with a NUL character rather than
+ newline. Also begin the messages section with a NUL character
+ instead of a newline. See <<OUTPUT>> below for more information.
+
--name-only::
In the Conflicted file info section, instead of writing a list
of (mode, oid, stage, path) tuples to output for conflicted
@@ -76,7 +82,8 @@ OID of toplevel tree
This is a tree object that represents what would be checked out in the
working tree at the end of `git merge`. If there were conflicts, then
-files within this tree may have embedded conflict markers.
+files within this tree may have embedded conflict markers. This section
+is always followed by a newline (or NUL if `-z` is passed).
[[CFI]]
Conflicted file info
@@ -89,20 +96,26 @@ This is a sequence of lines with the format
The filename will be quoted as explained for the configuration
variable `core.quotePath` (see linkgit:git-config[1]). However, if
the `--name-only` option is passed, the mode, object, and stage will
-be omitted.
+be omitted. If `-z` is passed, the "lines" are terminated by a NUL
+character instead of a newline character.
[[IM]]
Informational messages
~~~~~~~~~~~~~~~~~~~~~~
-This always starts with a blank line to separate it from the previous
-sections, and then has free-form messages about the merge, such as:
+This always starts with a blank line (or NUL if `-z` is passed) to
+separate it from the previous sections, and then has free-form
+messages about the merge, such as:
* "Auto-merging <file>"
* "CONFLICT (rename/delete): <oldfile> renamed...but deleted in..."
* "Failed to merge submodule <submodule> (<reason>)"
* "Warning: cannot merge binary files: <filename>"
+Note that these free-form messages will never have a NUL character
+in or between them, even if -z is passed. It is simply a large block
+of text taking up the remainder of the output.
+
EXIT STATUS
-----------
diff --git a/builtin/merge-tree.c b/builtin/merge-tree.c
index 4a79caf081a..767892006e3 100644
--- a/builtin/merge-tree.c
+++ b/builtin/merge-tree.c
@@ -445,7 +445,7 @@ static int real_merge(struct merge_tree_options *o,
if (o->show_messages == -1)
o->show_messages = !result.clean;
- puts(oid_to_hex(&result.tree->object.oid));
+ printf("%s%c", oid_to_hex(&result.tree->object.oid), line_termination);
if (!result.clean) {
struct string_list conflicted_files = STRING_LIST_INIT_NODUP;
const char *last = NULL;
@@ -467,7 +467,7 @@ static int real_merge(struct merge_tree_options *o,
string_list_clear(&conflicted_files, 1);
}
if (o->show_messages) {
- printf("\n");
+ putchar(line_termination);
merge_display_update_messages(&opt, &result);
}
merge_finalize(&opt, &result);
@@ -493,6 +493,8 @@ int cmd_merge_tree(int argc, const char **argv, const char *prefix)
N_("do a trivial merge only"), MODE_TRIVIAL),
OPT_BOOL(0, "messages", &o.show_messages,
N_("also show informational/conflict messages")),
+ OPT_SET_INT('z', NULL, &line_termination,
+ N_("separate paths with the NUL character"), '\0'),
OPT_BOOL_F(0, "name-only",
&o.name_only,
N_("list filenames without modes/oids/stages"),
diff --git a/t/t4301-merge-tree-write-tree.sh b/t/t4301-merge-tree-write-tree.sh
index 0ec5f0d3f7e..22e03f0939c 100755
--- a/t/t4301-merge-tree-write-tree.sh
+++ b/t/t4301-merge-tree-write-tree.sh
@@ -173,4 +173,44 @@ test_expect_success 'Check conflicted oids and modes without messages' '
test_cmp conflicted-file-info actual
'
+test_expect_success 'NUL terminated conflicted file "lines"' '
+ git checkout -b tweak1 side1 &&
+ test_write_lines zero 1 2 3 4 5 6 >numbers &&
+ git add numbers &&
+ git mv numbers "Αυτά μου φαίνονται κινέζικα" &&
+ git commit -m "Renamed numbers" &&
+
+ test_expect_code 1 git merge-tree --write-tree -z tweak1 side2 >out &&
+ anonymize_hash out >actual &&
+
+ # Expected results:
+ # "greeting" should merge with conflicts
+ # "whatever" has *both* a modify/delete and a file/directory conflict
+ # "Αυτά μου φαίνονται κινέζικα" should have a conflict
+ echo HASH | lf_to_nul >expect &&
+
+ q_to_tab <<-EOF | lf_to_nul >>expect &&
+ 100644 HASH 1Qgreeting
+ 100644 HASH 2Qgreeting
+ 100644 HASH 3Qgreeting
+ 100644 HASH 1Qwhatever~tweak1
+ 100644 HASH 2Qwhatever~tweak1
+ 100644 HASH 1QΑυτά μου φαίνονται κινέζικα
+ 100644 HASH 2QΑυτά μου φαίνονται κινέζικα
+ 100644 HASH 3QΑυτά μου φαίνονται κινέζικα
+
+ EOF
+
+ cat <<-EOF >>expect &&
+ Auto-merging greeting
+ CONFLICT (content): Merge conflict in greeting
+ CONFLICT (file/directory): directory in the way of whatever from tweak1; moving it to whatever~tweak1 instead.
+ CONFLICT (modify/delete): whatever~tweak1 deleted in side2 and modified in tweak1. Version tweak1 of whatever~tweak1 left in tree.
+ Auto-merging Αυτά μου φαίνονται κινέζικα
+ CONFLICT (content): Merge conflict in Αυτά μου φαίνονται κινέζικα
+ EOF
+
+ test_cmp expect actual
+'
+
test_done
--
gitgitgadget
