From: Elijah Newren <newren@xxxxxxxxx>
Callers of `git merge-tree --write-tree` will often want to know which
files had conflicts. While they could potentially attempt to parse the
CONFLICT notices printed, those messages are not meant to be machine
readable. Provide a simpler mechanism of just printing the files (in
the same format as `git ls-files` with quoting, but restricted to
unmerged files) in the output before the free-form messages.
Signed-off-by: Elijah Newren <newren@xxxxxxxxx>
---
Documentation/git-merge-tree.txt | 8 ++++++++
builtin/merge-tree.c | 24 ++++++++++++++++++++++--
t/t4301-merge-tree-write-tree.sh | 11 +++++++++++
3 files changed, 41 insertions(+), 2 deletions(-)
diff --git a/Documentation/git-merge-tree.txt b/Documentation/git-merge-tree.txt
index 42e0f8f6183..160e8f44b62 100644
--- a/Documentation/git-merge-tree.txt
+++ b/Documentation/git-merge-tree.txt
@@ -55,6 +55,7 @@ simply one line:
Whereas for a conflicted merge, the output is by default of the form:
<OID of toplevel tree>
+ <Conflicted file list>
<Informational messages>
These are discussed individually below.
@@ -66,6 +67,13 @@ 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.
+Conflicted file list
+~~~~~~~~~~~~~~~~~~~~
+
+This is a sequence of lines containing a filename on each line, quoted
+as explained for the configuration variable `core.quotePath` (see
+linkgit:git-config[1]).
+
Informational messages
~~~~~~~~~~~~~~~~~~~~~~
diff --git a/builtin/merge-tree.c b/builtin/merge-tree.c
index 6a556ab1c9c..54dae018203 100644
--- a/builtin/merge-tree.c
+++ b/builtin/merge-tree.c
@@ -11,6 +11,9 @@
#include "blob.h"
#include "exec-cmd.h"
#include "merge-blobs.h"
+#include "quote.h"
+
+static int line_termination = '\n';
struct merge_list {
struct merge_list *next;
@@ -394,7 +397,8 @@ struct merge_tree_options {
};
static int real_merge(struct merge_tree_options *o,
- const char *branch1, const char *branch2)
+ const char *branch1, const char *branch2,
+ const char *prefix)
{
struct commit *parent1, *parent2;
struct commit_list *common;
@@ -438,6 +442,22 @@ static int real_merge(struct merge_tree_options *o,
o->show_messages = !result.clean;
puts(oid_to_hex(&result.tree->object.oid));
+ if (!result.clean) {
+ struct string_list conflicted_files = STRING_LIST_INIT_NODUP;
+ const char *last = NULL;
+ int i;
+
+ merge_get_conflicted_files(&result, &conflicted_files);
+ for (i = 0; i < conflicted_files.nr; i++) {
+ const char *name = conflicted_files.items[i].string;
+ if (last && !strcmp(last, name))
+ continue;
+ write_name_quoted_relative(
+ name, prefix, stdout, line_termination);
+ last = name;
+ }
+ string_list_clear(&conflicted_files, 1);
+ }
if (o->show_messages) {
printf("\n");
merge_display_update_messages(&opt, &result, stdout);
@@ -486,7 +506,7 @@ int cmd_merge_tree(int argc, const char **argv, const char *prefix)
/* Do the relevant type of merge */
if (o.mode == 'w')
- return real_merge(&o, argv[0], argv[1]);
+ return real_merge(&o, argv[0], argv[1], prefix);
else
return trivial_merge(argv[0], argv[1], argv[2]);
}
diff --git a/t/t4301-merge-tree-write-tree.sh b/t/t4301-merge-tree-write-tree.sh
index e2255711f9c..7113d060bc5 100755
--- a/t/t4301-merge-tree-write-tree.sh
+++ b/t/t4301-merge-tree-write-tree.sh
@@ -95,6 +95,8 @@ test_expect_success 'test conflict notices and such' '
# "whatever" has *both* a modify/delete and a file/directory conflict
cat <<-EOF >expect &&
HASH
+ greeting
+ whatever~side1
Auto-merging greeting
CONFLICT (content): Merge conflict in greeting
@@ -106,4 +108,13 @@ test_expect_success 'test conflict notices and such' '
test_cmp expect actual
'
+test_expect_success 'Just the conflicted files without the messages' '
+ test_expect_code 1 git merge-tree --write-tree --no-messages side1 side2 >out &&
+ sed -e "s/[0-9a-f]\{40,\}/HASH/g" out >actual &&
+
+ test_write_lines HASH greeting whatever~side1 >expect &&
+
+ test_cmp expect actual
+'
+
test_done
--
gitgitgadget
