When git-interpret-trailers is used to add a trailer to a message that
does not end in a trailing newline, the new trailer is added on the line
immediately following the message instead of as a trailer block
separated from the message by a blank line.
For example, if a message's text was exactly "The subject" with no
trailing newline present, `git interpret-trailers --trailer
my-trailer=true` will result in the following malformed commit message:
The subject
my-trailer: true
While it is generally expected that a commit message should end with a
newline character, git-interpret-trailers should not be returning an
invalid message in this case.
Use `strbuf_complete_line` to ensure that the message ends with a
newline character when reading the input.
Signed-off-by: Brian Lyles <brianmlyles@xxxxxxxxx>
---
Differences from v2:
- We now use `strbuf_complete_line` when reading the input file instead
of handling the lack of a newline when constructing the output, which
drastically simplifies the patch. Thanks to Phillip for this
suggestion.
- Removed some unnecessary `\` in the new tests.
The range-diff from v2 is not included since the patch is so different
that range-diff is not able to provide anything meaningful.
builtin/interpret-trailers.c | 1 +
t/t7513-interpret-trailers.sh | 40 +++++++++++++++++++++++++++++++++++
2 files changed, 41 insertions(+)
diff --git a/builtin/interpret-trailers.c b/builtin/interpret-trailers.c
index 1d969494cf..e6f22459f1 100644
--- a/builtin/interpret-trailers.c
+++ b/builtin/interpret-trailers.c
@@ -132,6 +132,7 @@ static void read_input_file(struct strbuf *sb, const char *file)
if (strbuf_read(sb, fileno(stdin), 0) < 0)
die_errno(_("could not read from stdin"));
}
+ strbuf_complete_line(sb);
}
static void interpret_trailers(const struct process_trailer_options *opts,
diff --git a/t/t7513-interpret-trailers.sh b/t/t7513-interpret-trailers.sh
index 3d3e13ccf8..d78cae3e04 100755
--- a/t/t7513-interpret-trailers.sh
+++ b/t/t7513-interpret-trailers.sh
@@ -175,6 +175,46 @@ test_expect_success 'with only a title in the message' '
test_cmp expected actual
'
+test_expect_success 'with a bodiless message that lacks a trailing newline after the subject' '
+ cat >expected <<-\EOF &&
+ area: change
+
+ Reviewed-by: Peff
+ Acked-by: Johan
+ EOF
+ printf "area: change" |
+ git interpret-trailers --trailer "Reviewed-by: Peff" \
+ --trailer "Acked-by: Johan" >actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'with a bodied message that lacks a trailing newline after the body' '
+ cat >expected <<-\EOF &&
+ area: change
+
+ details about the change.
+
+ Reviewed-by: Peff
+ Acked-by: Johan
+ EOF
+ printf "area: change\n\ndetails about the change." |
+ git interpret-trailers --trailer "Reviewed-by: Peff" \
+ --trailer "Acked-by: Johan" >actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'with a message that lacks a trailing newline after the trailers' '
+ cat >expected <<-\EOF &&
+ area: change
+
+ Reviewed-by: Peff
+ Acked-by: Johan
+ EOF
+ printf "area: change\n\nReviewed-by: Peff" |
+ git interpret-trailers --trailer "Acked-by: Johan" >actual &&
+ test_cmp expected actual
+'
+
test_expect_success 'with multiline title in the message' '
cat >expected <<-\EOF &&
place of
--
2.45.2
