[PATCH] name-rev: deprecate --stdin in favor of --annotate-text

From: John Cai <redacted>

Introduce a --annotate-text that is functionally equivalent of --stdin.
--stdin does not behave as --stdin in other subcommands, such as
pack-objects whereby it takes one argument per line. Since --stdin can
be a confusing and misleading name, rename it to --annotate-text.

This change adds a warning to --stdin warning that it will be removed in
the future.

Signed-off-by: "John Cai" <redacted>
---
    name-rev: deprecate --stdin in favor of --anotate-text
    
    Introduce a --anontate-text that is functionally equivalent of --stdin.
    --stdin does not behave as --stdin in other subcommands, such as
    pack-objects whereby it takes one argument per line. Since --stdin can
    be a confusing and misleading name, the goal is to rename it to
    --anotate-text.
    
    This is the first step in a process of eventually fully deprecating
    --stdin. This change also adds a warning to --stdin warning that it will
    be removed in the future.
    
    See https://lore.kernel.org/git/xmqqsfuh1pxz.fsf@gitster.g/ for
    discussion.

Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-git-1171%2Fjohn-cai%2Fjc%2Fdeprecate-name-rev-stdin-v1
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-git-1171/john-cai/jc/deprecate-name-rev-stdin-v1
Pull-Request: https://github.com/git/git/pull/1171

 Documentation/git-name-rev.txt | 29 ++++++++++++++++++++++++++++-
 builtin/name-rev.c             | 17 +++++++++++++----
 2 files changed, 41 insertions(+), 5 deletions(-)

diff --git a/Documentation/git-name-rev.txt b/Documentation/git-name-rev.txt
index 5cb0eb0855f..64d59c6ee1a 100644
--- a/Documentation/git-name-rev.txt
+++ b/Documentation/git-name-rev.txt

@@ -43,10 +43,37 @@ OPTIONS
 	List all commits reachable from all refs
 
 --stdin::
+	This option is deprecated in favor of 'git name-rev --annotate-text'.
+	They are functionally equivalent.
+
+--annotate-text::
 	Transform stdin by substituting all the 40-character SHA-1
 	hexes (say $hex) with "$hex ($rev_name)".  When used with
 	--name-only, substitute with "$rev_name", omitting $hex
-	altogether.  Intended for the scripter's use.
+	altogether.
+
+	For example:
++
+----------
+$ cat sample.txt
+
+An abbreviated revision 2ae0a9cb82 will not be substituted.
+The full name after substitution is 2ae0a9cb8298185a94e5998086f380a355dd8907,
+while its tree object is 70d105cc79e63b81cfdcb08a15297c23e60b07ad
+
+$ git name-rev --annotate-text < sample.txt
+
+An abbreviated revision 2ae0a9cb82 will not be substituted.
+The full name after substitution is 2ae0a9cb8298185a94e5998086f380a355dd8907
+(master),
+while its tree object is 70d105cc79e63b81cfdcb08a15297c23e60b07ad
+
+$ git name-rev --name-only --annotate-text < sample.txt
+
+An abbreviated revision 2ae0a9cb82 will not be substituted.
+The full name is master,
+while its tree object is 70d105cc79e63b81cfdcb08a15297c23e60b07ad
+----------
 
 --name-only::
 	Instead of printing both the SHA-1 and the name, print only

diff --git a/builtin/name-rev.c b/builtin/name-rev.c
index 27f60153a6c..73b244a5aac 100644
--- a/builtin/name-rev.c
+++ b/builtin/name-rev.c

@@ -527,7 +527,7 @@ static void name_rev_line(char *p, struct name_ref_data *data)
 int cmd_name_rev(int argc, const char **argv, const char *prefix)
 {
 	struct object_array revs = OBJECT_ARRAY_INIT;
-	int all = 0, transform_stdin = 0, allow_undefined = 1, always = 0, peel_tag = 0;
+	int all = 0, annotate_text = 0, transform_stdin = 0, allow_undefined = 1, always = 0, peel_tag = 0;
 	struct name_ref_data data = { 0, 0, STRING_LIST_INIT_NODUP, STRING_LIST_INIT_NODUP };
 	struct option opts[] = {
 		OPT_BOOL(0, "name-only", &data.name_only, N_("print only ref-based names (no object names)")),

@@ -539,6 +539,7 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
 		OPT_GROUP(""),
 		OPT_BOOL(0, "all", &all, N_("list all commits reachable from all refs")),
 		OPT_BOOL(0, "stdin", &transform_stdin, N_("read from stdin")),
+		OPT_BOOL(0, "annotate-text", &annotate_text, N_("annotate text text from stdin")),
 		OPT_BOOL(0, "undefined", &allow_undefined, N_("allow to print `undefined` names (default)")),
 		OPT_BOOL(0, "always",     &always,
 			   N_("show abbreviated commit object as fallback")),

@@ -554,11 +555,19 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
 	init_commit_rev_name(&rev_names);
 	git_config(git_default_config, NULL);
 	argc = parse_options(argc, argv, prefix, opts, name_rev_usage, 0);
-	if (all + transform_stdin + !!argc > 1) {
+
+	if (transform_stdin) {
+		warning("--stdin is deprecated. Please use --annotate-text instead, "
+					"which is functionally equivalent.\n"
+					"This option will be removed in a future release.");
+		annotate_text = 1;
+	}
+
+	if (all + annotate_text + !!argc > 1) {
 		error("Specify either a list, or --all, not both!");
 		usage_with_options(name_rev_usage, opts);
 	}
-	if (all || transform_stdin)
+	if (all || annotate_text)
 		cutoff = 0;
 
 	for (; argc; argc--, argv++) {

@@ -613,7 +622,7 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
 	for_each_ref(name_ref, &data);
 	name_tips();
 
-	if (transform_stdin) {
+	if (annotate_text) {
 		char buffer[2048];
 
 		while (!feof(stdin)) {

base-commit: 2ae0a9cb8298185a94e5998086f380a355dd8907
-- 
gitgitgadget

Introduce a --anontate-text that is functionally equivalent of --stdin.
--stdin does not behave as --stdin in other subcommands, such as
pack-objects whereby it takes one argument per line. Since --stdin can be a
confusing and misleading name, the goal is to rename it to --anotate-text.

This is the first step in a process of eventually fully deprecating --stdin.
This change also adds a warning to --stdin warning that it will be removed
in the future.

See https://lore.kernel.org/git/xmqqsfuh1pxz.fsf@gitster.g/ for discussion.

changes since v1 (thanks to Junio's review):

 * s/annotate_text/annotate_stdin
 * add a commit to replace the 2048 size buffer with a strbuf and use
   strbuf_getwholeline to get lines from stdin
 * fixed formatting bugs in documentation udpates.

John Cai (2):
  name-rev: deprecate --stdin in favor of --annotate-text
  name-rev.c: use strbuf_getline instead of limited size buffer

 Documentation/git-name-rev.txt | 29 ++++++++++++++++++++++++++++-
 builtin/name-rev.c             | 27 +++++++++++++++++----------
 2 files changed, 45 insertions(+), 11 deletions(-)


base-commit: 55b058a8bbcc54bd93c733035c995abc7967e539
Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-git-1171%2Fjohn-cai%2Fjc%2Fdeprecate-name-rev-stdin-v2
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-git-1171/john-cai/jc/deprecate-name-rev-stdin-v2
Pull-Request: https://github.com/git/git/pull/1171

Range-diff vs v1:

 1:  b83d9422d0c ! 1:  e8063284b4d name-rev: deprecate --stdin in favor of --annotate-text
     @@ Documentation/git-name-rev.txt: OPTIONS
       	List all commits reachable from all refs
       
       --stdin::
     -+	This option is deprecated in favor of 'git name-rev --annotate-text'.
     ++	This option is deprecated in favor of 'git name-rev --annotate-stdin'.
      +	They are functionally equivalent.
      +
     -+--annotate-text::
     ++--annotate-stdin::
       	Transform stdin by substituting all the 40-character SHA-1
       	hexes (say $hex) with "$hex ($rev_name)".  When used with
       	--name-only, substitute with "$rev_name", omitting $hex
     @@ Documentation/git-name-rev.txt: OPTIONS
      +The full name after substitution is 2ae0a9cb8298185a94e5998086f380a355dd8907,
      +while its tree object is 70d105cc79e63b81cfdcb08a15297c23e60b07ad
      +
     -+$ git name-rev --annotate-text < sample.txt
     ++$ git name-rev --annotate-stdin <sample.txt
      +
      +An abbreviated revision 2ae0a9cb82 will not be substituted.
      +The full name after substitution is 2ae0a9cb8298185a94e5998086f380a355dd8907
      +(master),
      +while its tree object is 70d105cc79e63b81cfdcb08a15297c23e60b07ad
      +
     -+$ git name-rev --name-only --annotate-text < sample.txt
     ++$ git name-rev --name-only --annotate-stdin <sample.txt
      +
      +An abbreviated revision 2ae0a9cb82 will not be substituted.
      +The full name is master,
     @@ builtin/name-rev.c: static void name_rev_line(char *p, struct name_ref_data *dat
       {
       	struct object_array revs = OBJECT_ARRAY_INIT;
      -	int all = 0, transform_stdin = 0, allow_undefined = 1, always = 0, peel_tag = 0;
     -+	int all = 0, annotate_text = 0, transform_stdin = 0, allow_undefined = 1, always = 0, peel_tag = 0;
     ++	int all = 0, annotate_stdin = 0, transform_stdin = 0, allow_undefined = 1, always = 0, peel_tag = 0;
       	struct name_ref_data data = { 0, 0, STRING_LIST_INIT_NODUP, STRING_LIST_INIT_NODUP };
       	struct option opts[] = {
       		OPT_BOOL(0, "name-only", &data.name_only, N_("print only ref-based names (no object names)")),
     @@ builtin/name-rev.c: int cmd_name_rev(int argc, const char **argv, const char *pr
       		OPT_GROUP(""),
       		OPT_BOOL(0, "all", &all, N_("list all commits reachable from all refs")),
       		OPT_BOOL(0, "stdin", &transform_stdin, N_("read from stdin")),
     -+		OPT_BOOL(0, "annotate-text", &annotate_text, N_("annotate text text from stdin")),
     ++		OPT_BOOL(0, "annotate-stdin", &annotate_stdin, N_("annotate text from stdin")),
       		OPT_BOOL(0, "undefined", &allow_undefined, N_("allow to print `undefined` names (default)")),
       		OPT_BOOL(0, "always",     &always,
       			   N_("show abbreviated commit object as fallback")),
     @@ builtin/name-rev.c: int cmd_name_rev(int argc, const char **argv, const char *pr
      -	if (all + transform_stdin + !!argc > 1) {
      +
      +	if (transform_stdin) {
     -+		warning("--stdin is deprecated. Please use --annotate-text instead, "
     ++		warning("--stdin is deprecated. Please use --annotate-stdin instead, "
      +					"which is functionally equivalent.\n"
      +					"This option will be removed in a future release.");
     -+		annotate_text = 1;
     ++		annotate_stdin = 1;
      +	}
      +
     -+	if (all + annotate_text + !!argc > 1) {
     ++	if (all + annotate_stdin + !!argc > 1) {
       		error("Specify either a list, or --all, not both!");
       		usage_with_options(name_rev_usage, opts);
       	}
      -	if (all || transform_stdin)
     -+	if (all || annotate_text)
     ++	if (all || annotate_stdin)
       		cutoff = 0;
       
       	for (; argc; argc--, argv++) {
     @@ builtin/name-rev.c: int cmd_name_rev(int argc, const char **argv, const char *pr
       	name_tips();
       
      -	if (transform_stdin) {
     -+	if (annotate_text) {
     - 		char buffer[2048];
     +-		char buffer[2048];
     ++	if (annotate_stdin) {
     ++		struct strbuf sb = STRBUF_INIT;
       
       		while (!feof(stdin)) {
     + 			char *p = fgets(buffer, sizeof(buffer), stdin);
 -:  ----------- > 2:  4636e27f53e name-rev.c: use strbuf_getline instead of limited size buffer

-- 
gitgitgadget

From: John Cai <redacted>

Introduce a --annotate-text that is functionally equivalent of --stdin.
--stdin does not behave as --stdin in other subcommands, such as
pack-objects whereby it takes one argument per line. Since --stdin can
be a confusing and misleading name, rename it to --annotate-text.

This change adds a warning to --stdin warning that it will be removed in
the future.

Signed-off-by: "John Cai" <redacted>
---
 Documentation/git-name-rev.txt | 29 ++++++++++++++++++++++++++++-
 builtin/name-rev.c             | 19 ++++++++++++++-----
 2 files changed, 42 insertions(+), 6 deletions(-)

diff --git a/Documentation/git-name-rev.txt b/Documentation/git-name-rev.txt
index 5cb0eb0855f..ee11b2ca9e7 100644
--- a/Documentation/git-name-rev.txt
+++ b/Documentation/git-name-rev.txt

@@ -43,10 +43,37 @@ OPTIONS
 	List all commits reachable from all refs
 
 --stdin::
+	This option is deprecated in favor of 'git name-rev --annotate-stdin'.
+	They are functionally equivalent.
+
+--annotate-stdin::
 	Transform stdin by substituting all the 40-character SHA-1
 	hexes (say $hex) with "$hex ($rev_name)".  When used with
 	--name-only, substitute with "$rev_name", omitting $hex
-	altogether.  Intended for the scripter's use.
+	altogether.
+
+	For example:
++
+----------
+$ cat sample.txt
+
+An abbreviated revision 2ae0a9cb82 will not be substituted.
+The full name after substitution is 2ae0a9cb8298185a94e5998086f380a355dd8907,
+while its tree object is 70d105cc79e63b81cfdcb08a15297c23e60b07ad
+
+$ git name-rev --annotate-stdin <sample.txt
+
+An abbreviated revision 2ae0a9cb82 will not be substituted.
+The full name after substitution is 2ae0a9cb8298185a94e5998086f380a355dd8907
+(master),
+while its tree object is 70d105cc79e63b81cfdcb08a15297c23e60b07ad
+
+$ git name-rev --name-only --annotate-stdin <sample.txt
+
+An abbreviated revision 2ae0a9cb82 will not be substituted.
+The full name is master,
+while its tree object is 70d105cc79e63b81cfdcb08a15297c23e60b07ad
+----------
 
 --name-only::
 	Instead of printing both the SHA-1 and the name, print only

diff --git a/builtin/name-rev.c b/builtin/name-rev.c
index 27f60153a6c..21370afdaf9 100644
--- a/builtin/name-rev.c
+++ b/builtin/name-rev.c

@@ -527,7 +527,7 @@ static void name_rev_line(char *p, struct name_ref_data *data)
 int cmd_name_rev(int argc, const char **argv, const char *prefix)
 {
 	struct object_array revs = OBJECT_ARRAY_INIT;
-	int all = 0, transform_stdin = 0, allow_undefined = 1, always = 0, peel_tag = 0;
+	int all = 0, annotate_stdin = 0, transform_stdin = 0, allow_undefined = 1, always = 0, peel_tag = 0;
 	struct name_ref_data data = { 0, 0, STRING_LIST_INIT_NODUP, STRING_LIST_INIT_NODUP };
 	struct option opts[] = {
 		OPT_BOOL(0, "name-only", &data.name_only, N_("print only ref-based names (no object names)")),

@@ -539,6 +539,7 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
 		OPT_GROUP(""),
 		OPT_BOOL(0, "all", &all, N_("list all commits reachable from all refs")),
 		OPT_BOOL(0, "stdin", &transform_stdin, N_("read from stdin")),
+		OPT_BOOL(0, "annotate-stdin", &annotate_stdin, N_("annotate text from stdin")),
 		OPT_BOOL(0, "undefined", &allow_undefined, N_("allow to print `undefined` names (default)")),
 		OPT_BOOL(0, "always",     &always,
 			   N_("show abbreviated commit object as fallback")),

@@ -554,11 +555,19 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
 	init_commit_rev_name(&rev_names);
 	git_config(git_default_config, NULL);
 	argc = parse_options(argc, argv, prefix, opts, name_rev_usage, 0);
-	if (all + transform_stdin + !!argc > 1) {
+
+	if (transform_stdin) {
+		warning("--stdin is deprecated. Please use --annotate-stdin instead, "
+					"which is functionally equivalent.\n"
+					"This option will be removed in a future release.");
+		annotate_stdin = 1;
+	}
+
+	if (all + annotate_stdin + !!argc > 1) {
 		error("Specify either a list, or --all, not both!");
 		usage_with_options(name_rev_usage, opts);
 	}
-	if (all || transform_stdin)
+	if (all || annotate_stdin)
 		cutoff = 0;
 
 	for (; argc; argc--, argv++) {

@@ -613,8 +622,8 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
 	for_each_ref(name_ref, &data);
 	name_tips();
 
-	if (transform_stdin) {
-		char buffer[2048];
+	if (annotate_stdin) {
+		struct strbuf sb = STRBUF_INIT;
 
 		while (!feof(stdin)) {
 			char *p = fgets(buffer, sizeof(buffer), stdin);

-- 
gitgitgadget

From: John Cai <redacted>

Using a buffer limited to 2048 is unnecessarily limiting. Switch to
using a string buffer to read in stdin for annotation.

Signed-off-by: "John Cai" <redacted>
---
 builtin/name-rev.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/builtin/name-rev.c b/builtin/name-rev.c
index 21370afdaf9..85993bc2b38 100644
--- a/builtin/name-rev.c
+++ b/builtin/name-rev.c

@@ -625,12 +625,10 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
 	if (annotate_stdin) {
 		struct strbuf sb = STRBUF_INIT;
 
-		while (!feof(stdin)) {
-			char *p = fgets(buffer, sizeof(buffer), stdin);
-			if (!p)
-				break;
-			name_rev_line(p, &data);
+		while (strbuf_getwholeline(&sb, stdin, '\n') != EOF) {
+			name_rev_line(sb.buf, &data);
 		}
+		strbuf_release(&sb);
 	} else if (all) {
 		int i, max;
 

-- 
gitgitgadget

"John Cai via GitGitGadget" [off-list ref] writes:

From: John Cai <redacted>

Introduce a --annotate-text that is functionally equivalent of --stdin.
--stdin does not behave as --stdin in other subcommands, such as
pack-objects whereby it takes one argument per line. Since --stdin can
be a confusing and misleading name, rename it to --annotate-text.

This change adds a warning to --stdin warning that it will be removed in
the future.

The above (including the title) uses --annotate-TEXT; the
documentation and the code seems to use --annotate-STDIN.

Signed-off-by: "John Cai" <redacted>
---
 Documentation/git-name-rev.txt | 29 ++++++++++++++++++++++++++++-
 builtin/name-rev.c             | 19 ++++++++++++++-----
 2 files changed, 42 insertions(+), 6 deletions(-)

We probably would want to fix existing tests that use --stdin for
its originally intended purpose to use its new spelling instead, and
a single new test to ensure that use of --stdin gives a warning as
expected.

This block probably would not compile well.

Introduce a --annotate-stdin that is functionally equivalent of --stdin.
--stdin does not behave as --stdin in other subcommands, such as
pack-objects whereby it takes one argument per line. Since --stdin can be a
confusing and misleading name, the goal is to rename it to --anotate-stdin.

This is the first step in a process of eventually fully deprecating --stdin.
This change also adds a warning to --stdin warning that it will be removed
in the future.

See https://lore.kernel.org/git/xmqqsfuh1pxz.fsf@gitster.g/ for discussion.

changes since v2:

 * updated title and cover letter with --annotate-stdin
 * s/--stdin/--annotate-stdin in tests that call name-rev
 * added a test to ensure correct warning is shown when --stdin is passed

John Cai (2):
  name-rev: deprecate --stdin in favor of --annotate-text
  name-rev.c: use strbuf_getline instead of limited size buffer

 Documentation/git-name-rev.txt       | 29 +++++++++++++++++++++++++++-
 builtin/name-rev.c                   | 27 ++++++++++++++++----------
 t/t3412-rebase-root.sh               |  2 +-
 t/t4202-log.sh                       |  2 +-
 t/t6007-rev-list-cherry-pick-file.sh | 26 ++++++++++++-------------
 t/t6012-rev-list-simplify.sh         |  2 +-
 t/t6111-rev-list-treesame.sh         |  3 ++-
 t/t6120-describe.sh                  |  9 +++++++--
 8 files changed, 70 insertions(+), 30 deletions(-)


base-commit: c8b2ade48c204690119936ada89cd938c476c5c2
Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-git-1171%2Fjohn-cai%2Fjc%2Fdeprecate-name-rev-stdin-v3
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-git-1171/john-cai/jc/deprecate-name-rev-stdin-v3
Pull-Request: https://github.com/git/git/pull/1171

Range-diff vs v2:

 1:  e8063284b4d ! 1:  55ec2a5fa3e name-rev: deprecate --stdin in favor of --annotate-text
     @@ builtin/name-rev.c: int cmd_name_rev(int argc, const char **argv, const char *pr
       
       		while (!feof(stdin)) {
       			char *p = fgets(buffer, sizeof(buffer), stdin);
     +
     + ## t/t3412-rebase-root.sh ##
     +@@ t/t3412-rebase-root.sh: export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
     + 
     + log_with_names () {
     + 	git rev-list --topo-order --parents --pretty="tformat:%s" HEAD |
     +-	git name-rev --stdin --name-only --refs=refs/heads/$1
     ++	git name-rev --annotate-stdin --name-only --refs=refs/heads/$1
     + }
     + 
     + 
     +
     + ## t/t4202-log.sh ##
     +@@ t/t4202-log.sh: EOF
     + 
     + test_expect_success 'log --graph with full output' '
     + 	git log --graph --date-order --pretty=short |
     +-		git name-rev --name-only --stdin |
     ++		git name-rev --name-only --annotate-stdin |
     + 		sed "s/Merge:.*/Merge: A B/;s/ *\$//" >actual &&
     + 	test_cmp expect actual
     + '
     +
     + ## t/t6007-rev-list-cherry-pick-file.sh ##
     +@@ t/t6007-rev-list-cherry-pick-file.sh: EOF
     + 
     + test_expect_success '--left-right' '
     + 	git rev-list --left-right B...C > actual &&
     +-	git name-rev --stdin --name-only --refs="*tags/*" \
     ++	git name-rev --annotate-stdin --name-only --refs="*tags/*" \
     + 		< actual > actual.named &&
     + 	test_cmp expect actual.named
     + '
     +@@ t/t6007-rev-list-cherry-pick-file.sh: EOF
     + 
     + test_expect_success '--cherry-pick bar does not come up empty' '
     + 	git rev-list --left-right --cherry-pick B...C -- bar > actual &&
     +-	git name-rev --stdin --name-only --refs="*tags/*" \
     ++	git name-rev --annotate-stdin --name-only --refs="*tags/*" \
     + 		< actual > actual.named &&
     + 	test_cmp expect actual.named
     + '
     + 
     + test_expect_success 'bar does not come up empty' '
     + 	git rev-list --left-right B...C -- bar > actual &&
     +-	git name-rev --stdin --name-only --refs="*tags/*" \
     ++	git name-rev --annotate-stdin --name-only --refs="*tags/*" \
     + 		< actual > actual.named &&
     + 	test_cmp expect actual.named
     + '
     +@@ t/t6007-rev-list-cherry-pick-file.sh: EOF
     + 
     + test_expect_success '--cherry-pick bar does not come up empty (II)' '
     + 	git rev-list --left-right --cherry-pick F...E -- bar > actual &&
     +-	git name-rev --stdin --name-only --refs="*tags/*" \
     ++	git name-rev --annotate-stdin --name-only --refs="*tags/*" \
     + 		< actual > actual.named &&
     + 	test_cmp expect actual.named
     + '
     + 
     + test_expect_success 'name-rev multiple --refs combine inclusive' '
     + 	git rev-list --left-right --cherry-pick F...E -- bar >actual &&
     +-	git name-rev --stdin --name-only --refs="*tags/F" --refs="*tags/E" \
     ++	git name-rev --annotate-stdin --name-only --refs="*tags/F" --refs="*tags/E" \
     + 		<actual >actual.named &&
     + 	test_cmp expect actual.named
     + '
     +@@ t/t6007-rev-list-cherry-pick-file.sh: EOF
     + test_expect_success 'name-rev --refs excludes non-matched patterns' '
     + 	git rev-list --left-right --right-only --cherry-pick F...E -- bar >>expect &&
     + 	git rev-list --left-right --cherry-pick F...E -- bar >actual &&
     +-	git name-rev --stdin --name-only --refs="*tags/F" \
     ++	git name-rev --annotate-stdin --name-only --refs="*tags/F" \
     + 		<actual >actual.named &&
     + 	test_cmp expect actual.named
     + '
     +@@ t/t6007-rev-list-cherry-pick-file.sh: EOF
     + test_expect_success 'name-rev --exclude excludes matched patterns' '
     + 	git rev-list --left-right --right-only --cherry-pick F...E -- bar >>expect &&
     + 	git rev-list --left-right --cherry-pick F...E -- bar >actual &&
     +-	git name-rev --stdin --name-only --refs="*tags/*" --exclude="*E" \
     ++	git name-rev --annotate-stdin --name-only --refs="*tags/*" --exclude="*E" \
     + 		<actual >actual.named &&
     + 	test_cmp expect actual.named
     + '
     + 
     + test_expect_success 'name-rev --no-refs clears the refs list' '
     + 	git rev-list --left-right --cherry-pick F...E -- bar >expect &&
     +-	git name-rev --stdin --name-only --refs="*tags/F" --refs="*tags/E" --no-refs --refs="*tags/G" \
     ++	git name-rev --annotate-stdin --name-only --refs="*tags/F" --refs="*tags/E" --no-refs --refs="*tags/G" \
     + 		<expect >actual &&
     + 	test_cmp expect actual
     + '
     +@@ t/t6007-rev-list-cherry-pick-file.sh: EOF
     + 
     + test_expect_success '--cherry-mark' '
     + 	git rev-list --cherry-mark F...E -- bar > actual &&
     +-	git name-rev --stdin --name-only --refs="*tags/*" \
     ++	git name-rev --annotate-stdin --name-only --refs="*tags/*" \
     + 		< actual > actual.named &&
     + 	test_cmp expect actual.named
     + '
     +@@ t/t6007-rev-list-cherry-pick-file.sh: EOF
     + 
     + test_expect_success '--cherry-mark --left-right' '
     + 	git rev-list --cherry-mark --left-right F...E -- bar > actual &&
     +-	git name-rev --stdin --name-only --refs="*tags/*" \
     ++	git name-rev --annotate-stdin --name-only --refs="*tags/*" \
     + 		< actual > actual.named &&
     + 	test_cmp expect actual.named
     + '
     +@@ t/t6007-rev-list-cherry-pick-file.sh: EOF
     + 
     + test_expect_success '--cherry-pick --right-only' '
     + 	git rev-list --cherry-pick --right-only F...E -- bar > actual &&
     +-	git name-rev --stdin --name-only --refs="*tags/*" \
     ++	git name-rev --annotate-stdin --name-only --refs="*tags/*" \
     + 		< actual > actual.named &&
     + 	test_cmp expect actual.named
     + '
     + 
     + test_expect_success '--cherry-pick --left-only' '
     + 	git rev-list --cherry-pick --left-only E...F -- bar > actual &&
     +-	git name-rev --stdin --name-only --refs="*tags/*" \
     ++	git name-rev --annotate-stdin --name-only --refs="*tags/*" \
     + 		< actual > actual.named &&
     + 	test_cmp expect actual.named
     + '
     +@@ t/t6007-rev-list-cherry-pick-file.sh: EOF
     + 
     + test_expect_success '--cherry' '
     + 	git rev-list --cherry F...E -- bar > actual &&
     +-	git name-rev --stdin --name-only --refs="*tags/*" \
     ++	git name-rev --annotate-stdin --name-only --refs="*tags/*" \
     + 		< actual > actual.named &&
     + 	test_cmp expect actual.named
     + '
     +
     + ## t/t6012-rev-list-simplify.sh ##
     +@@ t/t6012-rev-list-simplify.sh: note () {
     + }
     + 
     + unnote () {
     +-	git name-rev --tags --stdin | sed -e "s|$OID_REGEX (tags/\([^)]*\)) |\1 |g"
     ++	git name-rev --tags --annotate-stdin | sed -e "s|$OID_REGEX (tags/\([^)]*\)) |\1 |g"
     + }
     + 
     + #
     +
     + ## t/t6111-rev-list-treesame.sh ##
     +@@ t/t6111-rev-list-treesame.sh: note () {
     + }
     + 
     + unnote () {
     +-	git name-rev --tags --stdin | sed -e "s|$OID_REGEX (tags/\([^)]*\))\([ 	]\)|\1\2|g"
     ++	git name-rev --tags --annotate-stdin | \
     ++	sed -e "s|$OID_REGEX (tags/\([^)]*\))\([ 	]\)|\1\2|g"
     + }
     + 
     + test_expect_success setup '
     +
     + ## t/t6120-describe.sh ##
     +@@ t/t6120-describe.sh: test_expect_success 'name-rev --all' '
     + 	test_cmp expect actual
     + '
     + 
     +-test_expect_success 'name-rev --stdin' '
     ++test_expect_success 'name-rev --annotate-stdin' '
     + 	>expect.unsorted &&
     + 	for rev in $(git rev-list --all)
     + 	do
     +@@ t/t6120-describe.sh: test_expect_success 'name-rev --stdin' '
     + 		echo "$rev ($name)" >>expect.unsorted || return 1
     + 	done &&
     + 	sort <expect.unsorted >expect &&
     +-	git rev-list --all | git name-rev --stdin >actual.unsorted &&
     ++	git rev-list --all | git name-rev --annotate-stdin >actual.unsorted &&
     + 	sort <actual.unsorted >actual &&
     + 	test_cmp expect actual
     + '
     + 
     ++test_expect_success 'name-rev --stdin deprecated' "
     ++	git rev-list --all | git name-rev --stdin 2>actual &&
     ++	grep -E 'warning: --stdin is deprecated' actual
     ++"
     ++
     + test_expect_success 'describe --contains with the exact tags' '
     + 	echo "A^0" >expect &&
     + 	tag_object=$(git rev-parse refs/tags/A) &&
 2:  4636e27f53e = 2:  e4bd09ccf75 name-rev.c: use strbuf_getline instead of limited size buffer

-- 
gitgitgadget

From: John Cai <redacted>

Introduce a --annotate-text that is functionally equivalent of --stdin.
--stdin does not behave as --stdin in other subcommands, such as
pack-objects whereby it takes one argument per line. Since --stdin can
be a confusing and misleading name, rename it to --annotate-text.

This change adds a warning to --stdin warning that it will be removed in
the future.

Signed-off-by: "John Cai" <redacted>
---
 Documentation/git-name-rev.txt       | 29 +++++++++++++++++++++++++++-
 builtin/name-rev.c                   | 19 +++++++++++++-----
 t/t3412-rebase-root.sh               |  2 +-
 t/t4202-log.sh                       |  2 +-
 t/t6007-rev-list-cherry-pick-file.sh | 26 ++++++++++++-------------
 t/t6012-rev-list-simplify.sh         |  2 +-
 t/t6111-rev-list-treesame.sh         |  3 ++-
 t/t6120-describe.sh                  |  9 +++++++--
 8 files changed, 67 insertions(+), 25 deletions(-)

diff --git a/Documentation/git-name-rev.txt b/Documentation/git-name-rev.txt
index 5cb0eb0855f..ee11b2ca9e7 100644
--- a/Documentation/git-name-rev.txt
+++ b/Documentation/git-name-rev.txt

@@ -43,10 +43,37 @@ OPTIONS
 	List all commits reachable from all refs
 
 --stdin::
+	This option is deprecated in favor of 'git name-rev --annotate-stdin'.
+	They are functionally equivalent.
+
+--annotate-stdin::
 	Transform stdin by substituting all the 40-character SHA-1
 	hexes (say $hex) with "$hex ($rev_name)".  When used with
 	--name-only, substitute with "$rev_name", omitting $hex
-	altogether.  Intended for the scripter's use.
+	altogether.
+
+	For example:
++
+----------
+$ cat sample.txt
+
+An abbreviated revision 2ae0a9cb82 will not be substituted.
+The full name after substitution is 2ae0a9cb8298185a94e5998086f380a355dd8907,
+while its tree object is 70d105cc79e63b81cfdcb08a15297c23e60b07ad
+
+$ git name-rev --annotate-stdin <sample.txt
+
+An abbreviated revision 2ae0a9cb82 will not be substituted.
+The full name after substitution is 2ae0a9cb8298185a94e5998086f380a355dd8907
+(master),
+while its tree object is 70d105cc79e63b81cfdcb08a15297c23e60b07ad
+
+$ git name-rev --name-only --annotate-stdin <sample.txt
+
+An abbreviated revision 2ae0a9cb82 will not be substituted.
+The full name is master,
+while its tree object is 70d105cc79e63b81cfdcb08a15297c23e60b07ad
+----------
 
 --name-only::
 	Instead of printing both the SHA-1 and the name, print only

diff --git a/builtin/name-rev.c b/builtin/name-rev.c
index 27f60153a6c..21370afdaf9 100644
--- a/builtin/name-rev.c
+++ b/builtin/name-rev.c

@@ -527,7 +527,7 @@ static void name_rev_line(char *p, struct name_ref_data *data)
 int cmd_name_rev(int argc, const char **argv, const char *prefix)
 {
 	struct object_array revs = OBJECT_ARRAY_INIT;
-	int all = 0, transform_stdin = 0, allow_undefined = 1, always = 0, peel_tag = 0;
+	int all = 0, annotate_stdin = 0, transform_stdin = 0, allow_undefined = 1, always = 0, peel_tag = 0;
 	struct name_ref_data data = { 0, 0, STRING_LIST_INIT_NODUP, STRING_LIST_INIT_NODUP };
 	struct option opts[] = {
 		OPT_BOOL(0, "name-only", &data.name_only, N_("print only ref-based names (no object names)")),

@@ -539,6 +539,7 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
 		OPT_GROUP(""),
 		OPT_BOOL(0, "all", &all, N_("list all commits reachable from all refs")),
 		OPT_BOOL(0, "stdin", &transform_stdin, N_("read from stdin")),
+		OPT_BOOL(0, "annotate-stdin", &annotate_stdin, N_("annotate text from stdin")),
 		OPT_BOOL(0, "undefined", &allow_undefined, N_("allow to print `undefined` names (default)")),
 		OPT_BOOL(0, "always",     &always,
 			   N_("show abbreviated commit object as fallback")),

@@ -554,11 +555,19 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
 	init_commit_rev_name(&rev_names);
 	git_config(git_default_config, NULL);
 	argc = parse_options(argc, argv, prefix, opts, name_rev_usage, 0);
-	if (all + transform_stdin + !!argc > 1) {
+
+	if (transform_stdin) {
+		warning("--stdin is deprecated. Please use --annotate-stdin instead, "
+					"which is functionally equivalent.\n"
+					"This option will be removed in a future release.");
+		annotate_stdin = 1;
+	}
+
+	if (all + annotate_stdin + !!argc > 1) {
 		error("Specify either a list, or --all, not both!");
 		usage_with_options(name_rev_usage, opts);
 	}
-	if (all || transform_stdin)
+	if (all || annotate_stdin)
 		cutoff = 0;
 
 	for (; argc; argc--, argv++) {

@@ -613,8 +622,8 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
 	for_each_ref(name_ref, &data);
 	name_tips();
 
-	if (transform_stdin) {
-		char buffer[2048];
+	if (annotate_stdin) {
+		struct strbuf sb = STRBUF_INIT;
 
 		while (!feof(stdin)) {
 			char *p = fgets(buffer, sizeof(buffer), stdin);

diff --git a/t/t3412-rebase-root.sh b/t/t3412-rebase-root.sh
index 19c6f4acbf6..1e9f7833dd6 100755
--- a/t/t3412-rebase-root.sh
+++ b/t/t3412-rebase-root.sh

@@ -11,7 +11,7 @@ export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
 
 log_with_names () {
 	git rev-list --topo-order --parents --pretty="tformat:%s" HEAD |
-	git name-rev --stdin --name-only --refs=refs/heads/$1
+	git name-rev --annotate-stdin --name-only --refs=refs/heads/$1
 }
 
 

diff --git a/t/t4202-log.sh b/t/t4202-log.sh
index 50495598619..dc884107de4 100755
--- a/t/t4202-log.sh
+++ b/t/t4202-log.sh

@@ -659,7 +659,7 @@ EOF
 
 test_expect_success 'log --graph with full output' '
 	git log --graph --date-order --pretty=short |
-		git name-rev --name-only --stdin |
+		git name-rev --name-only --annotate-stdin |
 		sed "s/Merge:.*/Merge: A B/;s/ *\$//" >actual &&
 	test_cmp expect actual
 '

diff --git a/t/t6007-rev-list-cherry-pick-file.sh b/t/t6007-rev-list-cherry-pick-file.sh
index aebe4b69e13..6f3e5439771 100755
--- a/t/t6007-rev-list-cherry-pick-file.sh
+++ b/t/t6007-rev-list-cherry-pick-file.sh

@@ -58,7 +58,7 @@ EOF
 
 test_expect_success '--left-right' '
 	git rev-list --left-right B...C > actual &&
-	git name-rev --stdin --name-only --refs="*tags/*" \
+	git name-rev --annotate-stdin --name-only --refs="*tags/*" \
 		< actual > actual.named &&
 	test_cmp expect actual.named
 '

@@ -78,14 +78,14 @@ EOF
 
 test_expect_success '--cherry-pick bar does not come up empty' '
 	git rev-list --left-right --cherry-pick B...C -- bar > actual &&
-	git name-rev --stdin --name-only --refs="*tags/*" \
+	git name-rev --annotate-stdin --name-only --refs="*tags/*" \
 		< actual > actual.named &&
 	test_cmp expect actual.named
 '
 
 test_expect_success 'bar does not come up empty' '
 	git rev-list --left-right B...C -- bar > actual &&
-	git name-rev --stdin --name-only --refs="*tags/*" \
+	git name-rev --annotate-stdin --name-only --refs="*tags/*" \
 		< actual > actual.named &&
 	test_cmp expect actual.named
 '

@@ -97,14 +97,14 @@ EOF
 
 test_expect_success '--cherry-pick bar does not come up empty (II)' '
 	git rev-list --left-right --cherry-pick F...E -- bar > actual &&
-	git name-rev --stdin --name-only --refs="*tags/*" \
+	git name-rev --annotate-stdin --name-only --refs="*tags/*" \
 		< actual > actual.named &&
 	test_cmp expect actual.named
 '
 
 test_expect_success 'name-rev multiple --refs combine inclusive' '
 	git rev-list --left-right --cherry-pick F...E -- bar >actual &&
-	git name-rev --stdin --name-only --refs="*tags/F" --refs="*tags/E" \
+	git name-rev --annotate-stdin --name-only --refs="*tags/F" --refs="*tags/E" \
 		<actual >actual.named &&
 	test_cmp expect actual.named
 '

@@ -116,7 +116,7 @@ EOF
 test_expect_success 'name-rev --refs excludes non-matched patterns' '
 	git rev-list --left-right --right-only --cherry-pick F...E -- bar >>expect &&
 	git rev-list --left-right --cherry-pick F...E -- bar >actual &&
-	git name-rev --stdin --name-only --refs="*tags/F" \
+	git name-rev --annotate-stdin --name-only --refs="*tags/F" \
 		<actual >actual.named &&
 	test_cmp expect actual.named
 '

@@ -128,14 +128,14 @@ EOF
 test_expect_success 'name-rev --exclude excludes matched patterns' '
 	git rev-list --left-right --right-only --cherry-pick F...E -- bar >>expect &&
 	git rev-list --left-right --cherry-pick F...E -- bar >actual &&
-	git name-rev --stdin --name-only --refs="*tags/*" --exclude="*E" \
+	git name-rev --annotate-stdin --name-only --refs="*tags/*" --exclude="*E" \
 		<actual >actual.named &&
 	test_cmp expect actual.named
 '
 
 test_expect_success 'name-rev --no-refs clears the refs list' '
 	git rev-list --left-right --cherry-pick F...E -- bar >expect &&
-	git name-rev --stdin --name-only --refs="*tags/F" --refs="*tags/E" --no-refs --refs="*tags/G" \
+	git name-rev --annotate-stdin --name-only --refs="*tags/F" --refs="*tags/E" --no-refs --refs="*tags/G" \
 		<expect >actual &&
 	test_cmp expect actual
 '

@@ -149,7 +149,7 @@ EOF
 
 test_expect_success '--cherry-mark' '
 	git rev-list --cherry-mark F...E -- bar > actual &&
-	git name-rev --stdin --name-only --refs="*tags/*" \
+	git name-rev --annotate-stdin --name-only --refs="*tags/*" \
 		< actual > actual.named &&
 	test_cmp expect actual.named
 '

@@ -163,7 +163,7 @@ EOF
 
 test_expect_success '--cherry-mark --left-right' '
 	git rev-list --cherry-mark --left-right F...E -- bar > actual &&
-	git name-rev --stdin --name-only --refs="*tags/*" \
+	git name-rev --annotate-stdin --name-only --refs="*tags/*" \
 		< actual > actual.named &&
 	test_cmp expect actual.named
 '

@@ -174,14 +174,14 @@ EOF
 
 test_expect_success '--cherry-pick --right-only' '
 	git rev-list --cherry-pick --right-only F...E -- bar > actual &&
-	git name-rev --stdin --name-only --refs="*tags/*" \
+	git name-rev --annotate-stdin --name-only --refs="*tags/*" \
 		< actual > actual.named &&
 	test_cmp expect actual.named
 '
 
 test_expect_success '--cherry-pick --left-only' '
 	git rev-list --cherry-pick --left-only E...F -- bar > actual &&
-	git name-rev --stdin --name-only --refs="*tags/*" \
+	git name-rev --annotate-stdin --name-only --refs="*tags/*" \
 		< actual > actual.named &&
 	test_cmp expect actual.named
 '

@@ -193,7 +193,7 @@ EOF
 
 test_expect_success '--cherry' '
 	git rev-list --cherry F...E -- bar > actual &&
-	git name-rev --stdin --name-only --refs="*tags/*" \
+	git name-rev --annotate-stdin --name-only --refs="*tags/*" \
 		< actual > actual.named &&
 	test_cmp expect actual.named
 '

diff --git a/t/t6012-rev-list-simplify.sh b/t/t6012-rev-list-simplify.sh
index 4f7fa8b6c03..4fedc614fa6 100755
--- a/t/t6012-rev-list-simplify.sh
+++ b/t/t6012-rev-list-simplify.sh

@@ -12,7 +12,7 @@ note () {
 }
 
 unnote () {
-	git name-rev --tags --stdin | sed -e "s|$OID_REGEX (tags/\([^)]*\)) |\1 |g"
+	git name-rev --tags --annotate-stdin | sed -e "s|$OID_REGEX (tags/\([^)]*\)) |\1 |g"
 }
 
 #

diff --git a/t/t6111-rev-list-treesame.sh b/t/t6111-rev-list-treesame.sh
index e07b6070e0e..90ff1416400 100755
--- a/t/t6111-rev-list-treesame.sh
+++ b/t/t6111-rev-list-treesame.sh

@@ -23,7 +23,8 @@ note () {
 }
 
 unnote () {
-	git name-rev --tags --stdin | sed -e "s|$OID_REGEX (tags/\([^)]*\))\([ 	]\)|\1\2|g"
+	git name-rev --tags --annotate-stdin | \
+	sed -e "s|$OID_REGEX (tags/\([^)]*\))\([ 	]\)|\1\2|g"
 }
 
 test_expect_success setup '

diff --git a/t/t6120-describe.sh b/t/t6120-describe.sh
index d8af2bb9d2b..9781b92aedd 100755
--- a/t/t6120-describe.sh
+++ b/t/t6120-describe.sh

@@ -270,7 +270,7 @@ test_expect_success 'name-rev --all' '
 	test_cmp expect actual
 '
 
-test_expect_success 'name-rev --stdin' '
+test_expect_success 'name-rev --annotate-stdin' '
 	>expect.unsorted &&
 	for rev in $(git rev-list --all)
 	do

@@ -278,11 +278,16 @@ test_expect_success 'name-rev --stdin' '
 		echo "$rev ($name)" >>expect.unsorted || return 1
 	done &&
 	sort <expect.unsorted >expect &&
-	git rev-list --all | git name-rev --stdin >actual.unsorted &&
+	git rev-list --all | git name-rev --annotate-stdin >actual.unsorted &&
 	sort <actual.unsorted >actual &&
 	test_cmp expect actual
 '
 
+test_expect_success 'name-rev --stdin deprecated' "
+	git rev-list --all | git name-rev --stdin 2>actual &&
+	grep -E 'warning: --stdin is deprecated' actual
+"
+
 test_expect_success 'describe --contains with the exact tags' '
 	echo "A^0" >expect &&
 	tag_object=$(git rev-parse refs/tags/A) &&

-- 
gitgitgadget

From: John Cai <redacted>

Using a buffer limited to 2048 is unnecessarily limiting. Switch to
using a string buffer to read in stdin for annotation.

Signed-off-by: "John Cai" <redacted>
---
 builtin/name-rev.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/builtin/name-rev.c b/builtin/name-rev.c
index 21370afdaf9..85993bc2b38 100644
--- a/builtin/name-rev.c
+++ b/builtin/name-rev.c

@@ -625,12 +625,10 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
 	if (annotate_stdin) {
 		struct strbuf sb = STRBUF_INIT;
 
-		while (!feof(stdin)) {
-			char *p = fgets(buffer, sizeof(buffer), stdin);
-			if (!p)
-				break;
-			name_rev_line(p, &data);
+		while (strbuf_getwholeline(&sb, stdin, '\n') != EOF) {
+			name_rev_line(sb.buf, &data);
 		}
+		strbuf_release(&sb);
 	} else if (all) {
 		int i, max;
 

-- 
gitgitgadget

"John Cai via GitGitGadget" [off-list ref] writes:

As we are reading text, I wonder if it makes more sense to just use
strbuf_getline() that is meant to use the definition of "line" that
honors the platform convention (i.e. on Windows, '\r\n' is taken as
the EOL marker).

+			name_rev_line(sb.buf, &data);
 		}
+		strbuf_release(&sb);
 	} else if (all) {
 		int i, max;

Other than that, looking good.

Thanks.

"John Cai via GitGitGadget" [off-list ref] writes:

+--annotate-stdin::
 	Transform stdin by substituting all the 40-character SHA-1
 	hexes (say $hex) with "$hex ($rev_name)".  When used with
 	--name-only, substitute with "$rev_name", omitting $hex
-	altogether.  Intended for the scripter's use.
+	altogether.
+
+	For example:
++

I wonder if you also need the "There is no paragraph break,
concluding the bulleted item" marker that is a sole plus sign on a
line before the "For example:" thing.

Other than that, looking good.

Thanks.

"John Cai via GitGitGadget" [off-list ref] writes:

From: John Cai <redacted>

Introduce a --annotate-text that is functionally equivalent of --stdin.

This line and the title need to be updated to use "--annotate-stdin".

On 03/01/2022 14:47, John Cai via GitGitGadget wrote:

Is there a preferred order for the old/new variant documentation?

It struck me that the docs should offer the new (now 'correct') variant
first.

I didn't see anything about deprecation in the CodingGuidlines or
SubmittingPatches (only a quick search though)

--
Philip

Introduce a --annotate-stdin that is functionally equivalent of --stdin.
--stdin does not behave as --stdin in other subcommands, such as
pack-objects whereby it takes one argument per line. Since --stdin can be a
confusing and misleading name, the goal is to rename it to --annotate-stdin.

This is the first step in a process of eventually fully deprecating --stdin.
This change also adds a warning to --stdin warning that it will be removed
in the future.

See https://lore.kernel.org/git/xmqqsfuh1pxz.fsf@gitster.g/ for discussion.

changes since v3:

 * use strbuf_getline instead of strbuf_getwholeline (based on Junio's
   feedback)
 * fixed commit message s/annotate-text/annotate-stdin (based on Junio's
   feedback)
 * since strbuf_getline does not keep the trailing terminator, add back '\n'
   with strbuf_addchr
 * reordered documentation blocks based on (Philip Oakley's feedback)
 * fixed doc typos in example block

John Cai (2):
  name-rev: deprecate --stdin in favor of --annotate-stdin
  name-rev.c: use strbuf_getline instead of limited size buffer

 Documentation/git-name-rev.txt       | 30 ++++++++++++++++++++++++++--
 builtin/name-rev.c                   | 28 ++++++++++++++++----------
 t/t3412-rebase-root.sh               |  2 +-
 t/t4202-log.sh                       |  2 +-
 t/t6007-rev-list-cherry-pick-file.sh | 26 ++++++++++++------------
 t/t6012-rev-list-simplify.sh         |  2 +-
 t/t6111-rev-list-treesame.sh         |  3 ++-
 t/t6120-describe.sh                  |  9 +++++++--
 8 files changed, 71 insertions(+), 31 deletions(-)


base-commit: c8b2ade48c204690119936ada89cd938c476c5c2
Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-git-1171%2Fjohn-cai%2Fjc%2Fdeprecate-name-rev-stdin-v4
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-git-1171/john-cai/jc/deprecate-name-rev-stdin-v4
Pull-Request: https://github.com/git/git/pull/1171

Range-diff vs v3:

 1:  55ec2a5fa3e ! 1:  4e9200922a4 name-rev: deprecate --stdin in favor of --annotate-text
     @@ Metadata
      Author: John Cai [off-list ref]
      
       ## Commit message ##
     -    name-rev: deprecate --stdin in favor of --annotate-text
     +    name-rev: deprecate --stdin in favor of --annotate-stdin
      
     -    Introduce a --annotate-text that is functionally equivalent of --stdin.
     +    Introduce a --annotate-stdin that is functionally equivalent of --stdin.
          --stdin does not behave as --stdin in other subcommands, such as
          pack-objects whereby it takes one argument per line. Since --stdin can
     -    be a confusing and misleading name, rename it to --annotate-text.
     +    be a confusing and misleading name, rename it to --annotate-stdin.
      
          This change adds a warning to --stdin warning that it will be removed in
          the future.
     @@ Commit message
      
       ## Documentation/git-name-rev.txt ##
      @@ Documentation/git-name-rev.txt: OPTIONS
     + --all::
       	List all commits reachable from all refs
       
     - --stdin::
     -+	This option is deprecated in favor of 'git name-rev --annotate-stdin'.
     -+	They are functionally equivalent.
     -+
     +---stdin::
      +--annotate-stdin::
       	Transform stdin by substituting all the 40-character SHA-1
       	hexes (say $hex) with "$hex ($rev_name)".  When used with
     @@ Documentation/git-name-rev.txt: OPTIONS
      -	altogether.  Intended for the scripter's use.
      +	altogether.
      +
     -+	For example:
     -++
     ++For example:
     ++
      +----------
      +$ cat sample.txt
      +
     @@ Documentation/git-name-rev.txt: OPTIONS
      +$ git name-rev --annotate-stdin <sample.txt
      +
      +An abbreviated revision 2ae0a9cb82 will not be substituted.
     -+The full name after substitution is 2ae0a9cb8298185a94e5998086f380a355dd8907
     -+(master),
     ++The full name after substitution is 2ae0a9cb8298185a94e5998086f380a355dd8907 (master),
      +while its tree object is 70d105cc79e63b81cfdcb08a15297c23e60b07ad
      +
      +$ git name-rev --name-only --annotate-stdin <sample.txt
      +
      +An abbreviated revision 2ae0a9cb82 will not be substituted.
     -+The full name is master,
     ++The full name after substitution is master,
      +while its tree object is 70d105cc79e63b81cfdcb08a15297c23e60b07ad
      +----------
     ++
     ++--stdin::
     ++	This option is deprecated in favor of 'git name-rev --annotate-stdin'.
     ++	They are functionally equivalent.
       
       --name-only::
       	Instead of printing both the SHA-1 and the name, print only
 2:  e4bd09ccf75 ! 2:  18f77ab9dde name-rev.c: use strbuf_getline instead of limited size buffer
     @@ builtin/name-rev.c: int cmd_name_rev(int argc, const char **argv, const char *pr
      -			if (!p)
      -				break;
      -			name_rev_line(p, &data);
     -+		while (strbuf_getwholeline(&sb, stdin, '\n') != EOF) {
     ++		while (strbuf_getline(&sb, stdin) != EOF) {
     ++			strbuf_addch(&sb, '\n');
      +			name_rev_line(sb.buf, &data);
       		}
      +		strbuf_release(&sb);

-- 
gitgitgadget

From: John Cai <redacted>

Introduce a --annotate-stdin that is functionally equivalent of --stdin.
--stdin does not behave as --stdin in other subcommands, such as
pack-objects whereby it takes one argument per line. Since --stdin can
be a confusing and misleading name, rename it to --annotate-stdin.

This change adds a warning to --stdin warning that it will be removed in
the future.

Signed-off-by: "John Cai" <redacted>
---
 Documentation/git-name-rev.txt       | 30 ++++++++++++++++++++++++++--
 builtin/name-rev.c                   | 19 +++++++++++++-----
 t/t3412-rebase-root.sh               |  2 +-
 t/t4202-log.sh                       |  2 +-
 t/t6007-rev-list-cherry-pick-file.sh | 26 ++++++++++++------------
 t/t6012-rev-list-simplify.sh         |  2 +-
 t/t6111-rev-list-treesame.sh         |  3 ++-
 t/t6120-describe.sh                  |  9 +++++++--
 8 files changed, 67 insertions(+), 26 deletions(-)

diff --git a/Documentation/git-name-rev.txt b/Documentation/git-name-rev.txt
index 5cb0eb0855f..96e8fd5ea47 100644
--- a/Documentation/git-name-rev.txt
+++ b/Documentation/git-name-rev.txt

@@ -42,11 +42,37 @@ OPTIONS
 --all::
 	List all commits reachable from all refs
 
---stdin::
+--annotate-stdin::
 	Transform stdin by substituting all the 40-character SHA-1
 	hexes (say $hex) with "$hex ($rev_name)".  When used with
 	--name-only, substitute with "$rev_name", omitting $hex
-	altogether.  Intended for the scripter's use.
+	altogether.
+
+For example:
+
+----------
+$ cat sample.txt
+
+An abbreviated revision 2ae0a9cb82 will not be substituted.
+The full name after substitution is 2ae0a9cb8298185a94e5998086f380a355dd8907,
+while its tree object is 70d105cc79e63b81cfdcb08a15297c23e60b07ad
+
+$ git name-rev --annotate-stdin <sample.txt
+
+An abbreviated revision 2ae0a9cb82 will not be substituted.
+The full name after substitution is 2ae0a9cb8298185a94e5998086f380a355dd8907 (master),
+while its tree object is 70d105cc79e63b81cfdcb08a15297c23e60b07ad
+
+$ git name-rev --name-only --annotate-stdin <sample.txt
+
+An abbreviated revision 2ae0a9cb82 will not be substituted.
+The full name after substitution is master,
+while its tree object is 70d105cc79e63b81cfdcb08a15297c23e60b07ad
+----------
+
+--stdin::
+	This option is deprecated in favor of 'git name-rev --annotate-stdin'.
+	They are functionally equivalent.
 
 --name-only::
 	Instead of printing both the SHA-1 and the name, print only

diff --git a/builtin/name-rev.c b/builtin/name-rev.c
index 27f60153a6c..21370afdaf9 100644
--- a/builtin/name-rev.c
+++ b/builtin/name-rev.c

@@ -527,7 +527,7 @@ static void name_rev_line(char *p, struct name_ref_data *data)
 int cmd_name_rev(int argc, const char **argv, const char *prefix)
 {
 	struct object_array revs = OBJECT_ARRAY_INIT;
-	int all = 0, transform_stdin = 0, allow_undefined = 1, always = 0, peel_tag = 0;
+	int all = 0, annotate_stdin = 0, transform_stdin = 0, allow_undefined = 1, always = 0, peel_tag = 0;
 	struct name_ref_data data = { 0, 0, STRING_LIST_INIT_NODUP, STRING_LIST_INIT_NODUP };
 	struct option opts[] = {
 		OPT_BOOL(0, "name-only", &data.name_only, N_("print only ref-based names (no object names)")),

@@ -539,6 +539,7 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
 		OPT_GROUP(""),
 		OPT_BOOL(0, "all", &all, N_("list all commits reachable from all refs")),
 		OPT_BOOL(0, "stdin", &transform_stdin, N_("read from stdin")),
+		OPT_BOOL(0, "annotate-stdin", &annotate_stdin, N_("annotate text from stdin")),
 		OPT_BOOL(0, "undefined", &allow_undefined, N_("allow to print `undefined` names (default)")),
 		OPT_BOOL(0, "always",     &always,
 			   N_("show abbreviated commit object as fallback")),

@@ -554,11 +555,19 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
 	init_commit_rev_name(&rev_names);
 	git_config(git_default_config, NULL);
 	argc = parse_options(argc, argv, prefix, opts, name_rev_usage, 0);
-	if (all + transform_stdin + !!argc > 1) {
+
+	if (transform_stdin) {
+		warning("--stdin is deprecated. Please use --annotate-stdin instead, "
+					"which is functionally equivalent.\n"
+					"This option will be removed in a future release.");
+		annotate_stdin = 1;
+	}
+
+	if (all + annotate_stdin + !!argc > 1) {
 		error("Specify either a list, or --all, not both!");
 		usage_with_options(name_rev_usage, opts);
 	}
-	if (all || transform_stdin)
+	if (all || annotate_stdin)
 		cutoff = 0;
 
 	for (; argc; argc--, argv++) {

@@ -613,8 +622,8 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
 	for_each_ref(name_ref, &data);
 	name_tips();
 
-	if (transform_stdin) {
-		char buffer[2048];
+	if (annotate_stdin) {
+		struct strbuf sb = STRBUF_INIT;
 
 		while (!feof(stdin)) {
 			char *p = fgets(buffer, sizeof(buffer), stdin);

diff --git a/t/t3412-rebase-root.sh b/t/t3412-rebase-root.sh
index 19c6f4acbf6..1e9f7833dd6 100755
--- a/t/t3412-rebase-root.sh
+++ b/t/t3412-rebase-root.sh

@@ -11,7 +11,7 @@ export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
 
 log_with_names () {
 	git rev-list --topo-order --parents --pretty="tformat:%s" HEAD |
-	git name-rev --stdin --name-only --refs=refs/heads/$1
+	git name-rev --annotate-stdin --name-only --refs=refs/heads/$1
 }
 
 

diff --git a/t/t4202-log.sh b/t/t4202-log.sh
index 50495598619..dc884107de4 100755
--- a/t/t4202-log.sh
+++ b/t/t4202-log.sh

@@ -659,7 +659,7 @@ EOF
 
 test_expect_success 'log --graph with full output' '
 	git log --graph --date-order --pretty=short |
-		git name-rev --name-only --stdin |
+		git name-rev --name-only --annotate-stdin |
 		sed "s/Merge:.*/Merge: A B/;s/ *\$//" >actual &&
 	test_cmp expect actual
 '

diff --git a/t/t6007-rev-list-cherry-pick-file.sh b/t/t6007-rev-list-cherry-pick-file.sh
index aebe4b69e13..6f3e5439771 100755
--- a/t/t6007-rev-list-cherry-pick-file.sh
+++ b/t/t6007-rev-list-cherry-pick-file.sh

@@ -58,7 +58,7 @@ EOF
 
 test_expect_success '--left-right' '
 	git rev-list --left-right B...C > actual &&
-	git name-rev --stdin --name-only --refs="*tags/*" \
+	git name-rev --annotate-stdin --name-only --refs="*tags/*" \
 		< actual > actual.named &&
 	test_cmp expect actual.named
 '

@@ -78,14 +78,14 @@ EOF
 
 test_expect_success '--cherry-pick bar does not come up empty' '
 	git rev-list --left-right --cherry-pick B...C -- bar > actual &&
-	git name-rev --stdin --name-only --refs="*tags/*" \
+	git name-rev --annotate-stdin --name-only --refs="*tags/*" \
 		< actual > actual.named &&
 	test_cmp expect actual.named
 '
 
 test_expect_success 'bar does not come up empty' '
 	git rev-list --left-right B...C -- bar > actual &&
-	git name-rev --stdin --name-only --refs="*tags/*" \
+	git name-rev --annotate-stdin --name-only --refs="*tags/*" \
 		< actual > actual.named &&
 	test_cmp expect actual.named
 '

@@ -97,14 +97,14 @@ EOF
 
 test_expect_success '--cherry-pick bar does not come up empty (II)' '
 	git rev-list --left-right --cherry-pick F...E -- bar > actual &&
-	git name-rev --stdin --name-only --refs="*tags/*" \
+	git name-rev --annotate-stdin --name-only --refs="*tags/*" \
 		< actual > actual.named &&
 	test_cmp expect actual.named
 '
 
 test_expect_success 'name-rev multiple --refs combine inclusive' '
 	git rev-list --left-right --cherry-pick F...E -- bar >actual &&
-	git name-rev --stdin --name-only --refs="*tags/F" --refs="*tags/E" \
+	git name-rev --annotate-stdin --name-only --refs="*tags/F" --refs="*tags/E" \
 		<actual >actual.named &&
 	test_cmp expect actual.named
 '

@@ -116,7 +116,7 @@ EOF
 test_expect_success 'name-rev --refs excludes non-matched patterns' '
 	git rev-list --left-right --right-only --cherry-pick F...E -- bar >>expect &&
 	git rev-list --left-right --cherry-pick F...E -- bar >actual &&
-	git name-rev --stdin --name-only --refs="*tags/F" \
+	git name-rev --annotate-stdin --name-only --refs="*tags/F" \
 		<actual >actual.named &&
 	test_cmp expect actual.named
 '

@@ -128,14 +128,14 @@ EOF
 test_expect_success 'name-rev --exclude excludes matched patterns' '
 	git rev-list --left-right --right-only --cherry-pick F...E -- bar >>expect &&
 	git rev-list --left-right --cherry-pick F...E -- bar >actual &&
-	git name-rev --stdin --name-only --refs="*tags/*" --exclude="*E" \
+	git name-rev --annotate-stdin --name-only --refs="*tags/*" --exclude="*E" \
 		<actual >actual.named &&
 	test_cmp expect actual.named
 '
 
 test_expect_success 'name-rev --no-refs clears the refs list' '
 	git rev-list --left-right --cherry-pick F...E -- bar >expect &&
-	git name-rev --stdin --name-only --refs="*tags/F" --refs="*tags/E" --no-refs --refs="*tags/G" \
+	git name-rev --annotate-stdin --name-only --refs="*tags/F" --refs="*tags/E" --no-refs --refs="*tags/G" \
 		<expect >actual &&
 	test_cmp expect actual
 '

@@ -149,7 +149,7 @@ EOF
 
 test_expect_success '--cherry-mark' '
 	git rev-list --cherry-mark F...E -- bar > actual &&
-	git name-rev --stdin --name-only --refs="*tags/*" \
+	git name-rev --annotate-stdin --name-only --refs="*tags/*" \
 		< actual > actual.named &&
 	test_cmp expect actual.named
 '

@@ -163,7 +163,7 @@ EOF
 
 test_expect_success '--cherry-mark --left-right' '
 	git rev-list --cherry-mark --left-right F...E -- bar > actual &&
-	git name-rev --stdin --name-only --refs="*tags/*" \
+	git name-rev --annotate-stdin --name-only --refs="*tags/*" \
 		< actual > actual.named &&
 	test_cmp expect actual.named
 '

@@ -174,14 +174,14 @@ EOF
 
 test_expect_success '--cherry-pick --right-only' '
 	git rev-list --cherry-pick --right-only F...E -- bar > actual &&
-	git name-rev --stdin --name-only --refs="*tags/*" \
+	git name-rev --annotate-stdin --name-only --refs="*tags/*" \
 		< actual > actual.named &&
 	test_cmp expect actual.named
 '
 
 test_expect_success '--cherry-pick --left-only' '
 	git rev-list --cherry-pick --left-only E...F -- bar > actual &&
-	git name-rev --stdin --name-only --refs="*tags/*" \
+	git name-rev --annotate-stdin --name-only --refs="*tags/*" \
 		< actual > actual.named &&
 	test_cmp expect actual.named
 '

@@ -193,7 +193,7 @@ EOF
 
 test_expect_success '--cherry' '
 	git rev-list --cherry F...E -- bar > actual &&
-	git name-rev --stdin --name-only --refs="*tags/*" \
+	git name-rev --annotate-stdin --name-only --refs="*tags/*" \
 		< actual > actual.named &&
 	test_cmp expect actual.named
 '

diff --git a/t/t6012-rev-list-simplify.sh b/t/t6012-rev-list-simplify.sh
index 4f7fa8b6c03..4fedc614fa6 100755
--- a/t/t6012-rev-list-simplify.sh
+++ b/t/t6012-rev-list-simplify.sh

@@ -12,7 +12,7 @@ note () {
 }
 
 unnote () {
-	git name-rev --tags --stdin | sed -e "s|$OID_REGEX (tags/\([^)]*\)) |\1 |g"
+	git name-rev --tags --annotate-stdin | sed -e "s|$OID_REGEX (tags/\([^)]*\)) |\1 |g"
 }
 
 #

diff --git a/t/t6111-rev-list-treesame.sh b/t/t6111-rev-list-treesame.sh
index e07b6070e0e..90ff1416400 100755
--- a/t/t6111-rev-list-treesame.sh
+++ b/t/t6111-rev-list-treesame.sh

@@ -23,7 +23,8 @@ note () {
 }
 
 unnote () {
-	git name-rev --tags --stdin | sed -e "s|$OID_REGEX (tags/\([^)]*\))\([ 	]\)|\1\2|g"
+	git name-rev --tags --annotate-stdin | \
+	sed -e "s|$OID_REGEX (tags/\([^)]*\))\([ 	]\)|\1\2|g"
 }
 
 test_expect_success setup '

diff --git a/t/t6120-describe.sh b/t/t6120-describe.sh
index d8af2bb9d2b..9781b92aedd 100755
--- a/t/t6120-describe.sh
+++ b/t/t6120-describe.sh

@@ -270,7 +270,7 @@ test_expect_success 'name-rev --all' '
 	test_cmp expect actual
 '
 
-test_expect_success 'name-rev --stdin' '
+test_expect_success 'name-rev --annotate-stdin' '
 	>expect.unsorted &&
 	for rev in $(git rev-list --all)
 	do

@@ -278,11 +278,16 @@ test_expect_success 'name-rev --stdin' '
 		echo "$rev ($name)" >>expect.unsorted || return 1
 	done &&
 	sort <expect.unsorted >expect &&
-	git rev-list --all | git name-rev --stdin >actual.unsorted &&
+	git rev-list --all | git name-rev --annotate-stdin >actual.unsorted &&
 	sort <actual.unsorted >actual &&
 	test_cmp expect actual
 '
 
+test_expect_success 'name-rev --stdin deprecated' "
+	git rev-list --all | git name-rev --stdin 2>actual &&
+	grep -E 'warning: --stdin is deprecated' actual
+"
+
 test_expect_success 'describe --contains with the exact tags' '
 	echo "A^0" >expect &&
 	tag_object=$(git rev-parse refs/tags/A) &&

-- 
gitgitgadget

From: John Cai <redacted>

Using a buffer limited to 2048 is unnecessarily limiting. Switch to
using a string buffer to read in stdin for annotation.

Signed-off-by: "John Cai" <redacted>
---
 builtin/name-rev.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/builtin/name-rev.c b/builtin/name-rev.c
index 21370afdaf9..d16b4ca0b66 100644
--- a/builtin/name-rev.c
+++ b/builtin/name-rev.c

@@ -625,12 +625,11 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
 	if (annotate_stdin) {
 		struct strbuf sb = STRBUF_INIT;
 
-		while (!feof(stdin)) {
-			char *p = fgets(buffer, sizeof(buffer), stdin);
-			if (!p)
-				break;
-			name_rev_line(p, &data);
+		while (strbuf_getline(&sb, stdin) != EOF) {
+			strbuf_addch(&sb, '\n');
+			name_rev_line(sb.buf, &data);
 		}
+		strbuf_release(&sb);
 	} else if (all) {
 		int i, max;
 

-- 
gitgitgadget

I agree strbuf_getline is better since it handles EOF across platforms. However, one trouble I ran
into is that it does not retain the line terminator, so I had to add it back in this fashion. It looks
a little ugly, but let me know if you think this is preferable to using strbuf_getwholeline.

+			name_rev_line(sb.buf, &data);
		}
+		strbuf_release(&sb);
	} else if (all) {
		int i, max;

-- 
gitgitgadget

On Tue, Jan 4, 2022 at 10:32 AM Philip Oakley [off-list ref] wrote:

On 03/01/2022 14:47, John Cai via GitGitGadget wrote:

quoted

From: John Cai <redacted>
 --stdin::
+     This option is deprecated in favor of 'git name-rev --annotate-stdin'.
+     They are functionally equivalent.
+
+--annotate-stdin::
      Transform stdin by substituting all the 40-character SHA-1
      hexes (say $hex) with "$hex ($rev_name)".  When used with
      --name-only, substitute with "$rev_name", omitting $hex
-     altogether.  Intended for the scripter's use.
+     altogether.

Is there a preferred order for the old/new variant documentation?

It struck me that the docs should offer the new (now 'correct') variant
first.

I didn't see anything about deprecation in the CodingGuidlines or
SubmittingPatches (only a quick search though)

In other cases, we've demoted the deprecated option to a tiny blurb at
the end of the description of the option which replaces it so that the
deprecated option is no longer given a place of prominence but can
still be found with a search in case someone runs across it somewhere
and wants to learn about it.

    --annotate-stdin::
        Transform stdin by substituting all the 40-character SHA-1
        hexes (say $hex) with "$hex ($rev_name)".  When used with
        --name-only, substitute with "$rev_name", omitting $hex
        altogether. --stdin is a deprecated synonym.

Introduce a --annotate-stdin that is functionally equivalent of --stdin.
--stdin does not behave as --stdin in other subcommands, such as
pack-objects whereby it takes one argument per line. Since --stdin can be a
confusing and misleading name, the goal is to rename it to --annotate-stdin.

This is the first step in a process of eventually fully deprecating --stdin.
This change also adds a warning to --stdin warning that it will be removed
in the future.

See https://lore.kernel.org/git/xmqqsfuh1pxz.fsf@gitster.g/ for discussion.

changes since v4:

 * fixed documentation example indentation

changes since v3:

 * use strbuf_getline instead of strbuf_getwholeline (based on Junio's
   feedback)
 * fixed commit message s/annotate-text/annotate-stdin (based on Junio's
   feedback)
 * since strbuf_getline does not keep the trailing terminator, add back '\n'
   with strbuf_addchr
 * reordered documentation blocks based on (Philip Oakley's feedback)
 * fixed doc typos in example block

John Cai (2):
  name-rev: deprecate --stdin in favor of --annotate-stdin
  name-rev.c: use strbuf_getline instead of limited size buffer

 Documentation/git-name-rev.txt       | 30 ++++++++++++++++++++++++++--
 builtin/name-rev.c                   | 28 ++++++++++++++++----------
 t/t3412-rebase-root.sh               |  2 +-
 t/t4202-log.sh                       |  2 +-
 t/t6007-rev-list-cherry-pick-file.sh | 26 ++++++++++++------------
 t/t6012-rev-list-simplify.sh         |  2 +-
 t/t6111-rev-list-treesame.sh         |  3 ++-
 t/t6120-describe.sh                  |  9 +++++++--
 8 files changed, 71 insertions(+), 31 deletions(-)


base-commit: c8b2ade48c204690119936ada89cd938c476c5c2
Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-git-1171%2Fjohn-cai%2Fjc%2Fdeprecate-name-rev-stdin-v5
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-git-1171/john-cai/jc/deprecate-name-rev-stdin-v5
Pull-Request: https://github.com/git/git/pull/1171

Range-diff vs v4:

 1:  4e9200922a4 ! 1:  7c5fb10d87c name-rev: deprecate --stdin in favor of --annotate-stdin
     @@ Documentation/git-name-rev.txt: OPTIONS
       	--name-only, substitute with "$rev_name", omitting $hex
      -	altogether.  Intended for the scripter's use.
      +	altogether.
     -+
     +++
      +For example:
     +++
     ++--
     ++	$ cat sample.txt
      +
     -+----------
     -+$ cat sample.txt
     -+
     -+An abbreviated revision 2ae0a9cb82 will not be substituted.
     -+The full name after substitution is 2ae0a9cb8298185a94e5998086f380a355dd8907,
     -+while its tree object is 70d105cc79e63b81cfdcb08a15297c23e60b07ad
     ++	An abbreviated revision 2ae0a9cb82 will not be substituted.
     ++	The full name after substitution is 2ae0a9cb8298185a94e5998086f380a355dd8907,
     ++	while its tree object is 70d105cc79e63b81cfdcb08a15297c23e60b07ad
      +
     -+$ git name-rev --annotate-stdin <sample.txt
     ++	$ git name-rev --annotate-stdin <sample.txt
      +
     -+An abbreviated revision 2ae0a9cb82 will not be substituted.
     -+The full name after substitution is 2ae0a9cb8298185a94e5998086f380a355dd8907 (master),
     -+while its tree object is 70d105cc79e63b81cfdcb08a15297c23e60b07ad
     ++	An abbreviated revision 2ae0a9cb82 will not be substituted.
     ++	The full name after substitution is 2ae0a9cb8298185a94e5998086f380a355dd8907 (master),
     ++	while its tree object is 70d105cc79e63b81cfdcb08a15297c23e60b07ad
      +
     -+$ git name-rev --name-only --annotate-stdin <sample.txt
     ++	$ git name-rev --name-only --annotate-stdin <sample.txt
      +
     -+An abbreviated revision 2ae0a9cb82 will not be substituted.
     -+The full name after substitution is master,
     -+while its tree object is 70d105cc79e63b81cfdcb08a15297c23e60b07ad
     -+----------
     ++	An abbreviated revision 2ae0a9cb82 will not be substituted.
     ++	The full name after substitution is master,
     ++	while its tree object is 70d105cc79e63b81cfdcb08a15297c23e60b07ad
     ++--
      +
      +--stdin::
      +	This option is deprecated in favor of 'git name-rev --annotate-stdin'.
 2:  18f77ab9dde = 2:  2acd70f36e7 name-rev.c: use strbuf_getline instead of limited size buffer

-- 
gitgitgadget

From: John Cai <redacted>

Using a buffer limited to 2048 is unnecessarily limiting. Switch to
using a string buffer to read in stdin for annotation.

Signed-off-by: "John Cai" <redacted>
---
 builtin/name-rev.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/builtin/name-rev.c b/builtin/name-rev.c
index 21370afdaf9..d16b4ca0b66 100644
--- a/builtin/name-rev.c
+++ b/builtin/name-rev.c

@@ -625,12 +625,11 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
 	if (annotate_stdin) {
 		struct strbuf sb = STRBUF_INIT;
 
-		while (!feof(stdin)) {
-			char *p = fgets(buffer, sizeof(buffer), stdin);
-			if (!p)
-				break;
-			name_rev_line(p, &data);
+		while (strbuf_getline(&sb, stdin) != EOF) {
+			strbuf_addch(&sb, '\n');
+			name_rev_line(sb.buf, &data);
 		}
+		strbuf_release(&sb);
 	} else if (all) {
 		int i, max;
 

-- 
gitgitgadget

From: John Cai <redacted>

Introduce a --annotate-stdin that is functionally equivalent of --stdin.
--stdin does not behave as --stdin in other subcommands, such as
pack-objects whereby it takes one argument per line. Since --stdin can
be a confusing and misleading name, rename it to --annotate-stdin.

This change adds a warning to --stdin warning that it will be removed in
the future.

Signed-off-by: "John Cai" <redacted>
---
 Documentation/git-name-rev.txt       | 30 ++++++++++++++++++++++++++--
 builtin/name-rev.c                   | 19 +++++++++++++-----
 t/t3412-rebase-root.sh               |  2 +-
 t/t4202-log.sh                       |  2 +-
 t/t6007-rev-list-cherry-pick-file.sh | 26 ++++++++++++------------
 t/t6012-rev-list-simplify.sh         |  2 +-
 t/t6111-rev-list-treesame.sh         |  3 ++-
 t/t6120-describe.sh                  |  9 +++++++--
 8 files changed, 67 insertions(+), 26 deletions(-)

diff --git a/Documentation/git-name-rev.txt b/Documentation/git-name-rev.txt
index 5cb0eb0855f..f57d4633e3c 100644
--- a/Documentation/git-name-rev.txt
+++ b/Documentation/git-name-rev.txt

@@ -42,11 +42,37 @@ OPTIONS
 --all::
 	List all commits reachable from all refs
 
---stdin::
+--annotate-stdin::
 	Transform stdin by substituting all the 40-character SHA-1
 	hexes (say $hex) with "$hex ($rev_name)".  When used with
 	--name-only, substitute with "$rev_name", omitting $hex
-	altogether.  Intended for the scripter's use.
+	altogether.
++
+For example:
++
+--
+	$ cat sample.txt
+
+	An abbreviated revision 2ae0a9cb82 will not be substituted.
+	The full name after substitution is 2ae0a9cb8298185a94e5998086f380a355dd8907,
+	while its tree object is 70d105cc79e63b81cfdcb08a15297c23e60b07ad
+
+	$ git name-rev --annotate-stdin <sample.txt
+
+	An abbreviated revision 2ae0a9cb82 will not be substituted.
+	The full name after substitution is 2ae0a9cb8298185a94e5998086f380a355dd8907 (master),
+	while its tree object is 70d105cc79e63b81cfdcb08a15297c23e60b07ad
+
+	$ git name-rev --name-only --annotate-stdin <sample.txt
+
+	An abbreviated revision 2ae0a9cb82 will not be substituted.
+	The full name after substitution is master,
+	while its tree object is 70d105cc79e63b81cfdcb08a15297c23e60b07ad
+--
+
+--stdin::
+	This option is deprecated in favor of 'git name-rev --annotate-stdin'.
+	They are functionally equivalent.
 
 --name-only::
 	Instead of printing both the SHA-1 and the name, print only

diff --git a/builtin/name-rev.c b/builtin/name-rev.c
index 27f60153a6c..21370afdaf9 100644
--- a/builtin/name-rev.c
+++ b/builtin/name-rev.c

@@ -527,7 +527,7 @@ static void name_rev_line(char *p, struct name_ref_data *data)
 int cmd_name_rev(int argc, const char **argv, const char *prefix)
 {
 	struct object_array revs = OBJECT_ARRAY_INIT;
-	int all = 0, transform_stdin = 0, allow_undefined = 1, always = 0, peel_tag = 0;
+	int all = 0, annotate_stdin = 0, transform_stdin = 0, allow_undefined = 1, always = 0, peel_tag = 0;
 	struct name_ref_data data = { 0, 0, STRING_LIST_INIT_NODUP, STRING_LIST_INIT_NODUP };
 	struct option opts[] = {
 		OPT_BOOL(0, "name-only", &data.name_only, N_("print only ref-based names (no object names)")),

@@ -539,6 +539,7 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
 		OPT_GROUP(""),
 		OPT_BOOL(0, "all", &all, N_("list all commits reachable from all refs")),
 		OPT_BOOL(0, "stdin", &transform_stdin, N_("read from stdin")),
+		OPT_BOOL(0, "annotate-stdin", &annotate_stdin, N_("annotate text from stdin")),
 		OPT_BOOL(0, "undefined", &allow_undefined, N_("allow to print `undefined` names (default)")),
 		OPT_BOOL(0, "always",     &always,
 			   N_("show abbreviated commit object as fallback")),