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[PATCH 3/5] format_trailer_info(): append newline for non-trailer lines

From
LGLinus Arver via GitGitGadget <gitgitgadget@gmail.com>
Date
Mar 15, 2024, 06:55 UTC
Message-ID
<259a4edcfa5138053255dbade411ef151617bb1b.1710485706.git.gitgitgadget@gmail.com>
In-Reply-To
<pull.1694.git.1710485706.gitgitgadget@gmail.com>
From: Linus Arver <linusa@google.com>
This wraps up the preparatory refactors to unify the trailer formatters.

Two patches ago we made format_trailer_info() use trailer_item objects instead of the "trailers" string array. The strings in the array include trailing newlines, because the string array is split up with

    trailer_lines = strbuf_split_buf(str + trailer_block_start,
                                     end_of_log_message - trailer_block_start,
                                     '\n',
                                     0);

in trailer_info_get() and strbuf_split_buf() includes the terminator (in this case the newline character '\n') for each split-up substring.

And before we made the transition to use trailer_item objects for it, format_trailer_info() called parse_trailer() (which trims newlines) for trailer lines but did _not_ call parse_trailer() for non-trailer lines. So for trailer lines it had to add back the trimmed newline like this

    if (!opts->separator)
        strbuf_addch(out, '\n');

But for non-trailer lines it didn't have to add back the newline because it could just reuse same string in the "trailers" string array (which again, already included the trailing newline).

Now that format_trailer_info() uses trailer_item objects for all cases, it can't rely on "trailers" string array anymore. And so it must be taught to add a newline back when printing non-trailer lines, just like it already does for trailer lines. Do so now.

The test suite can pass again without the need to hide failures with *_failure, so flip the affected test cases back to *_success. Now, format_trailer_info() is in better shape to supersede format_trailers(), which we'll do in the next commit.

Signed-off-by: Linus Arver <linusa@google.com>
---
 t/t4205-log-pretty-formats.sh | 12 ++++++------
 t/t6300-for-each-ref.sh       | 16 ++--------------
 trailer.c                     |  5 +++--
 3 files changed, 11 insertions(+), 22 deletions(-)
diff --git a/t/t4205-log-pretty-formats.sh b/t/t4205-log-pretty-formats.sh
index 339e0c892ef..e3d655e6b8b 100755
--- a/t/t4205-log-pretty-formats.sh
+++ b/t/t4205-log-pretty-formats.sh
@@ -675,7 +675,7 @@ test_expect_success '%(trailers:only=no,only=true) shows only "key: value" trail
 	test_cmp expect actual
 '
 
-test_expect_failure '%(trailers:unfold) unfolds trailers' '
+test_expect_success '%(trailers:unfold) unfolds trailers' '
 	git log --no-walk --pretty="%(trailers:unfold)" >actual &&
 	{
 		unfold <trailers &&
@@ -737,7 +737,7 @@ test_expect_success '%(trailers:key=foo,unfold) properly unfolds' '
 	test_cmp expect actual
 '
 
-test_expect_failure 'pretty format %(trailers:key=foo,only=no) also includes nontrailer lines' '
+test_expect_success 'pretty format %(trailers:key=foo,only=no) also includes nontrailer lines' '
 	git log --no-walk --pretty="format:%(trailers:key=Acked-by,only=no)" >actual &&
 	{
 		echo "Acked-by: A U Thor <author@example.com>" &&
@@ -752,7 +752,7 @@ test_expect_success '%(trailers:key) without value is error' '
 	test_cmp expect actual
 '
 
-test_expect_failure '%(trailers:keyonly) shows only keys' '
+test_expect_success '%(trailers:keyonly) shows only keys' '
 	git log --no-walk --pretty="format:%(trailers:keyonly)" >actual &&
 	test_write_lines \
 		"Signed-off-by" \
@@ -774,7 +774,7 @@ test_expect_success '%(trailers:key=foo,valueonly) shows only value' '
 	test_cmp expect actual
 '
 
-test_expect_failure '%(trailers:valueonly) shows only values' '
+test_expect_success '%(trailers:valueonly) shows only values' '
 	git log --no-walk --pretty="format:%(trailers:valueonly)" >actual &&
 	test_write_lines \
 		"A U Thor <author@example.com>" \
@@ -813,7 +813,7 @@ test_expect_success 'pretty format %(trailers:separator=X,unfold) changes separa
 	test_cmp expect actual
 '
 
-test_expect_failure 'pretty format %(trailers:key_value_separator) changes key-value separator' '
+test_expect_success 'pretty format %(trailers:key_value_separator) changes key-value separator' '
 	git log --no-walk --pretty=format:"X%(trailers:key_value_separator=%x00)X" >actual &&
 	(
 		printf "XSigned-off-by\0A U Thor <author@example.com>\n" &&
@@ -824,7 +824,7 @@ test_expect_failure 'pretty format %(trailers:key_value_separator) changes key-v
 	test_cmp expect actual
 '
 
-test_expect_failure 'pretty format %(trailers:key_value_separator,unfold) changes key-value separator' '
+test_expect_success 'pretty format %(trailers:key_value_separator,unfold) changes key-value separator' '
 	git log --no-walk --pretty=format:"X%(trailers:key_value_separator=%x00,unfold)X" >actual &&
 	(
 		printf "XSigned-off-by\0A U Thor <author@example.com>\n" &&
diff --git a/t/t6300-for-each-ref.sh b/t/t6300-for-each-ref.sh
index 2688dcc7b9e..eb6c8204e8b 100755
--- a/t/t6300-for-each-ref.sh
+++ b/t/t6300-for-each-ref.sh
@@ -1446,19 +1446,7 @@ test_trailer_option () {
 	'
 }
 
-# Just like test_trailer_option, but expect failure instead of success.
-test_trailer_option_expect_failure () {
-	title=$1 option=$2
-	cat >expect
-	test_expect_failure "$title" '
-		git for-each-ref --format="%($option)" refs/heads/main >actual &&
-		test_cmp expect actual &&
-		git for-each-ref --format="%(contents:$option)" refs/heads/main >actual &&
-		test_cmp expect actual
-	'
-}
-
-test_trailer_option_expect_failure '%(trailers:unfold) unfolds trailers' \
+test_trailer_option '%(trailers:unfold) unfolds trailers' \
 	'trailers:unfold' <<-EOF
 	$(unfold <trailers)
 
@@ -1542,7 +1530,7 @@ test_trailer_option '%(trailers:key=foo,unfold) properly unfolds' \
 
 	EOF
 
-test_trailer_option_expect_failure '%(trailers:key=foo,only=no) also includes nontrailer lines' \
+test_trailer_option '%(trailers:key=foo,only=no) also includes nontrailer lines' \
 	'trailers:key=Signed-off-by,only=no' <<-EOF
 	Signed-off-by: A U Thor <author@example.com>
 	$(grep patch.description <trailers)
diff --git a/trailer.c b/trailer.c
index 2c0dd8ac829..fe8b0819d55 100644
--- a/trailer.c
+++ b/trailer.c
@@ -1124,9 +1124,10 @@ static void format_trailer_info(const struct process_trailer_options *opts,
 				strbuf_addbuf(out, opts->separator);
 			}
 			strbuf_addstr(out, item->value);
-			if (opts->separator) {
+			if (opts->separator)
 				strbuf_rtrim(out);
-			}
+			else
+				strbuf_addch(out, '\n');
 		}
 	}
 }
-- 
gitgitgadget
Previous: Linus Arver via GitGitGadgetNext: Junio C Hamano
Message 4 of 16 in “Unify trailer formatting functions”
  1. 0/5 Unify trailer formatting functionsLinus Arver via GitGitGadget, Mar 15, 2024
  2. 1/5 format_trailer_info(): use trailer_item objectsLinus Arver via GitGitGadget, Mar 15, 2024
  3. 2/5 format_trailer_info(): drop redundant unfold_value()Linus Arver via GitGitGadget, Mar 15, 2024
  4. 3/5 format_trailer_info(): append newline for non-trailer linesLinus Arver via GitGitGadget, Mar 15, 2024
  5. Junio C HamanoMar 15, 2024
  6. 4/5 trailer: begin formatting unificationLinus Arver via GitGitGadget, Mar 15, 2024
  7. 5/5 trailer: finish formatting unificationLinus Arver via GitGitGadget, Mar 15, 2024
  8. Junio C HamanoMar 15, 2024
  9. Kristoffer HaugsbakkMar 15, 2024
  10. Junio C HamanoMar 15, 2024
  11. Linus ArverMar 15, 2024
  12. Junio C HamanoMar 15, 2024
  13. Johannes SchindelinJul 2, 2024
  14. Junio C HamanoMar 26, 2024
  15. Linus ArverApr 2, 2024
  16. Junio C HamanoApr 15, 2024

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