[PATCH v3] pretty-formats: add hard truncation, without ellipsis, options

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Instead of truncating with "..", add options to replace with the
empty string, implied by passing NULL, and adjust the padding length calculation.

Extend the existing tests for these pretty formats to include
`Trunc` and Ltrunc` options matching the `trunc` and `ltrunc`
tests.

Signed-off-by: Philip Oakley <philipoakley@iee.email>
---
With updated commit message. No other changes.
---
 Documentation/pretty-formats.txt | 11 +++---
 pretty.c                         | 18 ++++++++-
 t/t4205-log-pretty-formats.sh    | 67 ++++++++++++++++++++++++++++++++
 t/t6006-rev-list-format.sh       | 45 +++++++++++++++++++++
 4 files changed, 135 insertions(+), 6 deletions(-)

diff --git a/Documentation/pretty-formats.txt b/Documentation/pretty-formats.txt
index 0b4c1c8d98..0bd339db33 100644
--- a/Documentation/pretty-formats.txt
+++ b/Documentation/pretty-formats.txt
@@ -146,14 +146,15 @@ The placeholders are:
 '%m':: left (`<`), right (`>`) or boundary (`-`) mark
 '%w([<w>[,<i1>[,<i2>]]])':: switch line wrapping, like the -w option of
 			    linkgit:git-shortlog[1].
-'%<(<N>[,trunc|ltrunc|mtrunc])':: make the next placeholder take at
+'%<(<N>[,trunc|ltrunc|mtrunc|Trunc|Ltrunc])':: make the next placeholder take at
 				  least N columns, padding spaces on
 				  the right if necessary.  Optionally
-				  truncate at the beginning (ltrunc),
-				  the middle (mtrunc) or the end
-				  (trunc) if the output is longer than
-				  N columns.  Note that truncating
+				  truncate (with ellipsis '..') at the beginning (ltrunc) `..ft`,
+				  the middle (mtrunc) `mi..le` or the end
+				  (trunc) `rig..` if the output is longer than
+				  N columns.  Note that truncating with ellipsis
 				  only works correctly with N >= 2.
+				  Use (Trunc|Ltrunc) for hard truncation without ellipsis.
 '%<|(<N>)':: make the next placeholder take at least until Nth
 	     columns, padding spaces on the right if necessary
 '%>(<N>)', '%>|(<N>)':: similar to '%<(<N>)', '%<|(<N>)' respectively,
diff --git a/pretty.c b/pretty.c
index 6cb363ae1c..1e873d3f41 100644
--- a/pretty.c
+++ b/pretty.c
@@ -857,7 +857,9 @@ enum trunc_type {
 	trunc_none,
 	trunc_left,
 	trunc_middle,
-	trunc_right
+	trunc_right,
+	trunc_left_hard,
+	trunc_right_hard
 };
 
 struct format_commit_context {
@@ -1145,6 +1147,10 @@ static size_t parse_padding_placeholder(const char *placeholder,
 				c->truncate = trunc_left;
 			else if (starts_with(start, "mtrunc)"))
 				c->truncate = trunc_middle;
+			else if (starts_with(start, "Ltrunc)"))
+				c->truncate = trunc_left_hard;
+			else if (starts_with(start, "Trunc)"))
+				c->truncate = trunc_right_hard;
 			else
 				return 0;
 		} else
@@ -1743,6 +1749,16 @@ static size_t format_and_pad_commit(struct strbuf *sb, /* in UTF-8 */
 					    padding - 2, len - (padding - 2),
 					    "..");
 			break;
+		case trunc_left_hard:
+			strbuf_utf8_replace(&local_sb,
+					    0, len - padding,
+					    NULL);
+			break;
+		case trunc_right_hard:
+			strbuf_utf8_replace(&local_sb,
+					    padding, len - padding,
+					    NULL);
+			break;
 		case trunc_none:
 			break;
 		}
diff --git a/t/t4205-log-pretty-formats.sh b/t/t4205-log-pretty-formats.sh
index e448ef2928..55dca30798 100755
--- a/t/t4205-log-pretty-formats.sh
+++ b/t/t4205-log-pretty-formats.sh
@@ -261,6 +261,17 @@ test_expect_success 'left alignment formatting with trunc' '
 	test_cmp expected actual
 '
 
+test_expect_success 'left alignment formatting with Trunc' '
+	git log --pretty="tformat:%<(10,Trunc)%s" >actual &&
+	qz_to_tab_space <<-\EOF >expected &&
+	message tw
+	message on
+	add bar  Z
+	initial. a
+	EOF
+	test_cmp expected actual
+'
+
 test_expect_success 'left alignment formatting with trunc. i18n.logOutputEncoding' '
 	git -c i18n.logOutputEncoding=$test_encoding log --pretty="tformat:%<(10,trunc)%s" >actual &&
 	qz_to_tab_space <<-\EOF | iconv -f utf-8 -t $test_encoding >expected &&
@@ -272,6 +283,17 @@ test_expect_success 'left alignment formatting with trunc. i18n.logOutputEncodin
 	test_cmp expected actual
 '
 
+test_expect_success 'left alignment formatting with Trunc. i18n.logOutputEncoding' '
+	git -c i18n.logOutputEncoding=$test_encoding log --pretty="tformat:%<(10,Trunc)%s" >actual &&
+	qz_to_tab_space <<-\EOF | iconv -f utf-8 -t $test_encoding >expected &&
+	message tw
+	message on
+	add bar  Z
+	initial. a
+	EOF
+	test_cmp expected actual
+'
+
 test_expect_success 'left alignment formatting with ltrunc' '
 	git log --pretty="tformat:%<(10,ltrunc)%s" >actual &&
 	qz_to_tab_space <<-EOF >expected &&
@@ -283,6 +305,18 @@ test_expect_success 'left alignment formatting with ltrunc' '
 	test_cmp expected actual
 '
 
+test_expect_success 'left alignment formatting with Ltrunc' '
+	git log --pretty="tformat:%<(10,Ltrunc)%s" >actual &&
+	qz_to_tab_space <<-EOF >expected &&
+	essage two
+	essage one
+	add bar  Z
+	an${sample_utf8_part}lich
+	EOF
+	test_cmp expected actual
+'
+
+
 test_expect_success 'left alignment formatting with ltrunc. i18n.logOutputEncoding' '
 	git -c i18n.logOutputEncoding=$test_encoding log --pretty="tformat:%<(10,ltrunc)%s" >actual &&
 	qz_to_tab_space <<-EOF | iconv -f utf-8 -t $test_encoding >expected &&
@@ -294,6 +328,16 @@ test_expect_success 'left alignment formatting with ltrunc. i18n.logOutputEncodi
 	test_cmp expected actual
 '
 
+test_expect_success 'left alignment formatting with Ltrunc. i18n.logOutputEncoding' '
+	git -c i18n.logOutputEncoding=$test_encoding log --pretty="tformat:%<(10,Ltrunc)%s" >actual &&
+	qz_to_tab_space <<-EOF | iconv -f utf-8 -t $test_encoding >expected &&
+	essage two
+	essage one
+	add bar  Z
+	an${sample_utf8_part}lich
+	EOF
+	test_cmp expected actual
+'
 test_expect_success 'left alignment formatting with mtrunc' '
 	git log --pretty="tformat:%<(10,mtrunc)%s" >actual &&
 	qz_to_tab_space <<-\EOF >expected &&
@@ -507,6 +551,19 @@ test_expect_success 'left/right alignment formatting with stealing' '
 	EOF
 	test_cmp expected actual
 '
+
+test_expect_success 'left/right hard alignment formatting with stealing' '
+	git commit --amend -m short --author "long long long <long@xxxxxx>" &&
+	git log --pretty="tformat:%<(10,Trunc)%s%>>(10,Ltrunc)% an" >actual &&
+	cat <<-\EOF >expected &&
+	short long  long long
+	message on   A U Thor
+	add bar      A U Thor
+	initial. a   A U Thor
+	EOF
+	test_cmp expected actual
+'
+
 test_expect_success 'left/right alignment formatting with stealing. i18n.logOutputEncoding' '
 	git -c i18n.logOutputEncoding=$test_encoding log --pretty="tformat:%<(10,trunc)%s%>>(10,ltrunc)% an" >actual &&
 	cat <<-\EOF | iconv -f utf-8 -t $test_encoding >expected &&
@@ -517,6 +574,16 @@ test_expect_success 'left/right alignment formatting with stealing. i18n.logOutp
 	EOF
 	test_cmp expected actual
 '
+test_expect_success 'left/right alignment formatting with stealing. i18n.logOutputEncoding' '
+	git -c i18n.logOutputEncoding=$test_encoding log --pretty="tformat:%<(10,Trunc)%s%>>(10,Ltrunc)% an" >actual &&
+	cat <<-\EOF | iconv -f utf-8 -t $test_encoding >expected &&
+	short long  long long
+	message on   A U Thor
+	add bar      A U Thor
+	initial. a   A U Thor
+	EOF
+	test_cmp expected actual
+'
 
 test_expect_success 'strbuf_utf8_replace() not producing NUL' '
 	git log --color --pretty="tformat:%<(10,trunc)%s%>>(10,ltrunc)%C(auto)%d" |
diff --git a/t/t6006-rev-list-format.sh b/t/t6006-rev-list-format.sh
index 41d0ca00b1..8dcc8000d1 100755
--- a/t/t6006-rev-list-format.sh
+++ b/t/t6006-rev-list-format.sh
@@ -218,6 +218,14 @@ commit $head1
 added (hinzugef${added_utf8_part}gt..
 EOF
 
+# ZZZ for a space?
+test_format subject-truncated "%<($truncate_count,Trunc)%s" qz_to_tab_space <<EOF
+commit $head2
+changed (ge${changed_utf8_part}ndert) f
+commit $head1
+added (hinzugef${added_utf8_part}gt)Z
+EOF
+
 test_format body %b <<EOF
 commit $head2
 commit $head1
@@ -400,6 +408,16 @@ commit $head1
 added (hinzugef${added_utf8_part_iso88591}gt..
 EOF
 
+# need qz qz_to_tab_space
+test_format complex-subject-Trunc "%<($truncate_count,Trunc)%s" qz_to_tab_space <<EOF
+commit $head3
+Test printing of com
+commit $head2
+changed (ge${changed_utf8_part_iso88591}ndert) f
+commit $head1
+added (hinzugef${added_utf8_part_iso88591}gt)Z
+EOF
+
 test_format complex-subject-mtrunc "%<($truncate_count,mtrunc)%s" <<EOF
 commit $head3
 Test prin..ex bodies
@@ -418,6 +436,14 @@ commit $head1
 .. (hinzugef${added_utf8_part_iso88591}gt) foo
 EOF
 
+test_format complex-subject-Ltrunc "%<($truncate_count,Ltrunc)%s" <<EOF
+commit $head3
+ng of complex bodies
+commit $head2
+anged (ge${changed_utf8_part_iso88591}ndert) foo
+commit $head1
+ed (hinzugef${added_utf8_part_iso88591}gt) foo
+EOF
 test_expect_success 'setup expected messages (for test %b)' '
 	cat <<-EOF >expected.utf-8 &&
 	commit $head3
@@ -455,6 +481,16 @@ commit $head1
 added (hinzugef${added_utf8_part}gt..
 EOF
 
+# need qz_to_tab_space
+test_format complex-subject-commitencoding-unset-Trunc "%<($truncate_count,Trunc)%s" qz_to_tab_space <<EOF
+commit $head3
+Test printing of com
+commit $head2
+changed (ge${changed_utf8_part}ndert) f
+commit $head1
+added (hinzugef${added_utf8_part}gt)Z
+EOF
+
 test_format complex-subject-commitencoding-unset-mtrunc "%<($truncate_count,mtrunc)%s" <<EOF
 commit $head3
 Test prin..ex bodies
@@ -473,6 +509,15 @@ commit $head1
 .. (hinzugef${added_utf8_part}gt) foo
 EOF
 
+test_format complex-subject-commitencoding-unset-Ltrunc "%<($truncate_count,Ltrunc)%s" <<EOF
+commit $head3
+ng of complex bodies
+commit $head2
+anged (ge${changed_utf8_part}ndert) foo
+commit $head1
+ed (hinzugef${added_utf8_part}gt) foo
+EOF
+
 test_format complex-body-commitencoding-unset %b <expected.utf-8
 
 test_expect_success '%x00 shows NUL' '
-- 
2.38.1.281.g83ef3ded8d




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