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* [PATCH 0/7] teach `worktree list` verbose mode and prunable annotations
@ 2021-01-04 16:21 Rafael Silva
  2021-01-04 16:21 ` [PATCH 1/7] worktree: move should_prune_worktree() to worktree.c Rafael Silva
                   ` (8 more replies)
  0 siblings, 9 replies; 98+ messages in thread
From: Rafael Silva @ 2021-01-04 16:21 UTC (permalink / raw)
  To: git; +Cc: Eric Sunshine, Rafael Silva

In c57b3367be (worktree: teach `list` to annotate locked worktree,
2020-10-11) we taught `git worktree list` to annotate working tree that
is locked by appending "locked" text in order to signalize to the user
that a working tree is locked.  During the review, there was some
discussion about additional annotations and information that `list`
command could provide to the user that has long been envisioned and
mentioned in [2], [3] and [4].

This patch series address some of these changes by teaching
`worktree list` to show "prunable" annotation, adding verbose mode and
extending the --porcelain format with prunable and locked annotation as
follow up from [1]. Additionally, it address one shortcoming for porcelain
format to escape any newline characters (LF and CRLF) for the lock reason
to prevent breaking format mentioned in [4] and [1] during the review
cycle.

I have tried to organise in a way the series is easy to review, the
patches are organised in seven patches.

The first moves the should_prune_worktree() machinery to the top-level
worktree.c exposing the function as general API, that will be reference
by should_prune_worktree() wrapper implemented on the second patch. The
original idea was to not only move should_prune_worktree() but also
refactor to accept "struct worktree" and load the information directly,
which can simplify the `prune` command by reusing get_worktrees().
However this seems to also require refactoring get_worktrees() itself
to return "non-valid" working trees that can/should be pruned. This is
also mentioned in [5]. Having the wrapper function makes it easier to add
the prunable annotation without touching the get_worktrees() and the
other worktree sub commands.  The refactoring can be addressed in a
future patch, if this turns out to be good idea.  One possible approach
is to teach get_worktrees() to take additional flags that will tell
whether to return only valid or all worktrees in GIT_DIR/worktrees/
directory and address its own possible shortcoming, if any.

The third patch changes worktree_lock_reason() to be more gentle for the
main working tree to simply returning NULL instead of aborting the
program via assert() macro. This allow us to simplify the code that
checks if the working tree is locked for default and porcelain format.
This changes is also mentioned in [6].

The forth patch is the one that teaches `list` command to show prunable
annotation, for both default and porcelain format, and adds the verbose
option. These changes are also done for the "locked" annotation that was
not done on in [1]. Additionally, `list` learns to fail when both
--verbose and --porcelain format as used together.

The fifth patch adds worktree_escape_reason() that accepts a (char *)
text and returned the text with any LF or CRLF escaped. The caller is
responsible to freeing the escaped text. This is used by the locked
annotation in porcelain format. Currently, this is defined within
builtin/worktree.c as I was not sure whether libfying the function as
part of this series is a good idea. At this time it seems more sensible
to leave the code internally and libfying later once we are confident
about the implementation and whether it can be used in other part of the
code base but I'm open for suggestion.

The sixth and seventh patches adds tests and update the git-worktree.txt
documentation accordingly.

[1] https://lore.kernel.org/git/20200928154953.30396-1-rafaeloliveira.cs@gmail.com/
[2] https://lore.kernel.org/git/CAPig+cQF6V8HNdMX5AZbmz3_w2WhSfA4SFfNhQqxXBqPXTZL+w@mail.gmail.com/
[3] https://lore.kernel.org/git/CAPig+cSGXqJuaZPhUhOVX5X=LMrjVfv8ye_6ncMUbyKox1i7QA@mail.gmail.com/
[4] https://lore.kernel.org/git/CAPig+cTitWCs5vB=0iXuUyEY22c0gvjXvY1ZtTT90s74ydhE=A@mail.gmail.com/
[5] https://lore.kernel.org/git/CACsJy8ChM99n6skQCv-GmFiod19mnwwH4j-6R+cfZSiVFAxjgA@mail.gmail.com/
[6] https://lore.kernel.org/git/xmqq8sctlgzx.fsf@gitster.c.googlers.com/

Series is built on top of 71ca53e8125e36efbda17293c50027d31681a41f, currently
poiting to master and v2.30.0 tag.

Rafael Silva (7):
  worktree: move should_prune_worktree() to worktree.c
  worktree: implement worktree_prune_reason() wrapper
  worktree: teach worktree_lock_reason() to gently handle main worktree
  worktree: teach `list` prunable annotation and verbose
  worktree: `list` escape lock reason in --porcelain
  worktree: add tests for `list` verbose and annotations
  worktree: document `list` verbose and prunable annotations

 Documentation/git-worktree.txt |  59 ++++++++++++++-
 builtin/worktree.c             | 130 ++++++++++++++-------------------
 t/t2402-worktree-list.sh       |  94 +++++++++++++++++++++++-
 worktree.c                     |  96 +++++++++++++++++++++++-
 worktree.h                     |  17 +++++
 5 files changed, 313 insertions(+), 83 deletions(-)

-- 
2.30.0.391.g469bf2a980


^ permalink raw reply	[flat|nested] 98+ messages in thread
* [PATCH] worktree: add -z option for list subcommand
@ 2022-02-25 15:08 Phillip Wood via GitGitGadget
  2022-02-25 17:59 ` Junio C Hamano
                   ` (2 more replies)
  0 siblings, 3 replies; 98+ messages in thread
From: Phillip Wood via GitGitGadget @ 2022-02-25 15:08 UTC (permalink / raw)
  To: git; +Cc: Eric Sunshine, Phillip Wood, Phillip Wood

From: Phillip Wood <phillip.wood@dunelm.org.uk>

Add a -z option to be used in conjunction with --porcelain that gives
NUL-terminated output. This enables 'worktree list --porcelain' to
handle worktree paths that contain newlines.

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
---
    worktree: add -z option for list subcommand
    
    Add a -z option to be used in conjunction with --porcelain that gives
    NUL-terminated output. This enables 'worktree list --porcelain' to
    handle worktree paths that contain newlines.
    
    For a previous discussion of the merits of adding a -z option vs quoting
    the worktree path see
    https://lore.kernel.org/git/CAPig+cT-9sjmkdWFEcFS=rg9ziV9b6uWNMpQ8BTYP-a258La6Q@mail.gmail.com/

Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-1164%2Fphillipwood%2Fwip%2Fworktree-list-nul-termination-v1
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-1164/phillipwood/wip/worktree-list-nul-termination-v1
Pull-Request: https://github.com/gitgitgadget/git/pull/1164

 Documentation/git-worktree.txt | 15 +++++++++++----
 builtin/worktree.c             | 33 +++++++++++++++++++++------------
 t/t2402-worktree-list.sh       | 21 +++++++++++++++++++++
 3 files changed, 53 insertions(+), 16 deletions(-)

diff --git a/Documentation/git-worktree.txt b/Documentation/git-worktree.txt
index 9e862fbcf79..a3fcd498df7 100644
--- a/Documentation/git-worktree.txt
+++ b/Documentation/git-worktree.txt
@@ -10,7 +10,7 @@ SYNOPSIS
 --------
 [verse]
 'git worktree add' [-f] [--detach] [--checkout] [--lock [--reason <string>]] [-b <new-branch>] <path> [<commit-ish>]
-'git worktree list' [-v | --porcelain]
+'git worktree list' [-v | --porcelain [-z]]
 'git worktree lock' [--reason <string>] <worktree>
 'git worktree move' <worktree> <new-path>
 'git worktree prune' [-n] [-v] [--expire <expire>]
@@ -223,7 +223,13 @@ This can also be set up as the default behaviour by using the
 --porcelain::
 	With `list`, output in an easy-to-parse format for scripts.
 	This format will remain stable across Git versions and regardless of user
-	configuration.  See below for details.
+	configuration.  It is recommended to combine this with `-z`.
+	See below for details.
+
+-z::
+	When `--porcelain` is specified with `list` terminate each line with a
+	NUL rather than a newline. This makes it possible to parse the output
+	when a worktree path contains a newline character.
 
 -q::
 --quiet::
@@ -411,7 +417,8 @@ working tree itself.
 
 Porcelain Format
 ~~~~~~~~~~~~~~~~
-The porcelain format has a line per attribute.  Attributes are listed with a
+The porcelain format has a line per attribute.  If `-z` is given then the lines
+are terminated with NUL rather than a newline.  Attributes are listed with a
 label and value separated by a single space.  Boolean attributes (like `bare`
 and `detached`) are listed as a label only, and are present only
 if the value is true.  Some attributes (like `locked`) can be listed as a label
@@ -449,7 +456,7 @@ prunable gitdir file points to non-existent location
 
 ------------
 
-If the lock reason contains "unusual" characters such as newline, they
+Unless `-z` is used any "unusual" characters in the lock reason such as newlines
 are escaped and the entire reason is quoted as explained for the
 configuration variable `core.quotePath` (see linkgit:git-config[1]).
 For Example:
diff --git a/builtin/worktree.c b/builtin/worktree.c
index 0d0809276fe..b4cc586f5c5 100644
--- a/builtin/worktree.c
+++ b/builtin/worktree.c
@@ -575,35 +575,38 @@ static int add(int ac, const char **av, const char *prefix)
 	return add_worktree(path, branch, &opts);
 }
 
-static void show_worktree_porcelain(struct worktree *wt)
+static void show_worktree_porcelain(struct worktree *wt, int line_terminator)
 {
 	const char *reason;
 
-	printf("worktree %s\n", wt->path);
+	printf("worktree %s%c", wt->path, line_terminator);
 	if (wt->is_bare)
-		printf("bare\n");
+		printf("bare%c", line_terminator);
 	else {
-		printf("HEAD %s\n", oid_to_hex(&wt->head_oid));
+		printf("HEAD %s%c", oid_to_hex(&wt->head_oid), line_terminator);
 		if (wt->is_detached)
-			printf("detached\n");
+			printf("detached%c", line_terminator);
 		else if (wt->head_ref)
-			printf("branch %s\n", wt->head_ref);
+			printf("branch %s%c", wt->head_ref, line_terminator);
 	}
 
 	reason = worktree_lock_reason(wt);
 	if (reason && *reason) {
 		struct strbuf sb = STRBUF_INIT;
-		quote_c_style(reason, &sb, NULL, 0);
-		printf("locked %s\n", sb.buf);
+		if (line_terminator) {
+			quote_c_style(reason, &sb, NULL, 0);
+			reason = sb.buf;
+		}
+		printf("locked %s%c", reason, line_terminator);
 		strbuf_release(&sb);
 	} else if (reason)
-		printf("locked\n");
+		printf("locked%c", line_terminator);
 
 	reason = worktree_prune_reason(wt, expire);
 	if (reason)
-		printf("prunable %s\n", reason);
+		printf("prunable %s%c", reason, line_terminator);
 
-	printf("\n");
+	fputc(line_terminator, stdout);
 }
 
 static void show_worktree(struct worktree *wt, int path_maxlen, int abbrev_len)
@@ -681,12 +684,15 @@ static void pathsort(struct worktree **wt)
 static int list(int ac, const char **av, const char *prefix)
 {
 	int porcelain = 0;
+	int line_terminator = '\n';
 
 	struct option options[] = {
 		OPT_BOOL(0, "porcelain", &porcelain, N_("machine-readable output")),
 		OPT__VERBOSE(&verbose, N_("show extended annotations and reasons, if available")),
 		OPT_EXPIRY_DATE(0, "expire", &expire,
 				N_("add 'prunable' annotation to worktrees older than <time>")),
+		OPT_SET_INT('z', NULL, &line_terminator,
+			    N_("fields are separated with NUL character"), '\0'),
 		OPT_END()
 	};
 
@@ -696,6 +702,8 @@ static int list(int ac, const char **av, const char *prefix)
 		usage_with_options(worktree_usage, options);
 	else if (verbose && porcelain)
 		die(_("options '%s' and '%s' cannot be used together"), "--verbose", "--porcelain");
+	else if (!line_terminator && !porcelain)
+		die(_("'-z' requires '--porcelain'"));
 	else {
 		struct worktree **worktrees = get_worktrees();
 		int path_maxlen = 0, abbrev = DEFAULT_ABBREV, i;
@@ -708,7 +716,8 @@ static int list(int ac, const char **av, const char *prefix)
 
 		for (i = 0; worktrees[i]; i++) {
 			if (porcelain)
-				show_worktree_porcelain(worktrees[i]);
+				show_worktree_porcelain(worktrees[i],
+							line_terminator);
 			else
 				show_worktree(worktrees[i], path_maxlen, abbrev);
 		}
diff --git a/t/t2402-worktree-list.sh b/t/t2402-worktree-list.sh
index c8a5a0aac6d..48d5d30d709 100755
--- a/t/t2402-worktree-list.sh
+++ b/t/t2402-worktree-list.sh
@@ -64,6 +64,27 @@ test_expect_success '"list" all worktrees --porcelain' '
 	test_cmp expect actual
 '
 
+test_expect_success '"list" all worktrees --porcelain -z' '
+	test_when_finished "rm -rf here _actual actual expect &&
+				git worktree prune" &&
+	printf "worktree %sQHEAD %sQbranch %sQQ" \
+		"$(git rev-parse --show-toplevel)" \
+		$(git rev-parse HEAD --symbolic-full-name HEAD) >expect &&
+	git worktree add --detach here main &&
+	printf "worktree %sQHEAD %sQdetachedQQ" \
+		"$(git -C here rev-parse --show-toplevel)" \
+		"$(git rev-parse HEAD)" >>expect &&
+	git worktree list --porcelain -z >_actual &&
+	cat _actual | tr "\0" Q >actual	&&
+	test_cmp expect actual
+'
+
+test_expect_success '"list" -z fails without --porcelain' '
+	test_when_finished "rm -rf here && git worktree prune" &&
+	git worktree add --detach here main &&
+	test_must_fail git worktree list -z
+'
+
 test_expect_success '"list" all worktrees with locked annotation' '
 	test_when_finished "rm -rf locked unlocked out && git worktree prune" &&
 	git worktree add --detach locked main &&

base-commit: dab1b7905d0b295f1acef9785bb2b9cbb0fdec84
-- 
gitgitgadget

^ permalink raw reply related	[flat|nested] 98+ messages in thread

end of thread, other threads:[~2022-02-28 17:16 UTC | newest]

Thread overview: 98+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-01-04 16:21 [PATCH 0/7] teach `worktree list` verbose mode and prunable annotations Rafael Silva
2021-01-04 16:21 ` [PATCH 1/7] worktree: move should_prune_worktree() to worktree.c Rafael Silva
2021-01-06  5:58   ` Eric Sunshine
2021-01-08  7:40     ` Rafael Silva
2021-01-06  6:55   ` Eric Sunshine
2021-01-07  7:24     ` Eric Sunshine
2021-01-08  7:41     ` Rafael Silva
2021-01-04 16:21 ` [PATCH 2/7] worktree: implement worktree_prune_reason() wrapper Rafael Silva
2021-01-06  7:08   ` Eric Sunshine
2021-01-08  7:42     ` Rafael Silva
2021-01-04 16:21 ` [PATCH 3/7] worktree: teach worktree_lock_reason() to gently handle main worktree Rafael Silva
2021-01-06  7:29   ` Eric Sunshine
2021-01-08  7:43     ` Rafael Silva
2021-01-04 16:21 ` [PATCH 4/7] worktree: teach `list` prunable annotation and verbose Rafael Silva
2021-01-06  8:31   ` Eric Sunshine
2021-01-08  7:45     ` Rafael Silva
2021-01-04 16:21 ` [PATCH 5/7] worktree: `list` escape lock reason in --porcelain Rafael Silva
2021-01-05 10:29   ` Phillip Wood
2021-01-05 11:02     ` [PATCH] worktree: add -z option for list subcommand Phillip Wood
2021-01-07  3:34       ` Eric Sunshine
2021-01-08 10:33         ` Phillip Wood
2021-01-10  7:27           ` Eric Sunshine
2021-01-06  9:07     ` [PATCH 5/7] worktree: `list` escape lock reason in --porcelain Eric Sunshine
2021-01-08  7:47     ` Rafael Silva
2021-01-06  8:59   ` Eric Sunshine
2021-01-04 16:21 ` [PATCH 6/7] worktree: add tests for `list` verbose and annotations Rafael Silva
2021-01-06  9:39   ` Eric Sunshine
2021-01-07  4:09     ` Eric Sunshine
2021-01-08  7:49     ` Rafael Silva
2021-01-04 16:21 ` [PATCH 7/7] worktree: document `list` verbose and prunable annotations Rafael Silva
2021-01-06  9:57   ` Eric Sunshine
2021-01-08  7:49     ` Rafael Silva
2021-01-06  5:36 ` [PATCH 0/7] teach `worktree list` verbose mode " Eric Sunshine
2021-01-08  7:38   ` Rafael Silva
2021-01-08  8:19     ` Eric Sunshine
2021-01-17 23:42 ` [PATCH v2 0/6] " Rafael Silva
2021-01-17 23:42   ` [PATCH v2 1/6] worktree: libify should_prune_worktree() Rafael Silva
2021-01-17 23:42   ` [PATCH v2 2/6] worktree: teach worktree to lazy-load "prunable" reason Rafael Silva
2021-01-18  2:57     ` Eric Sunshine
2021-01-19  7:57       ` Rafael Silva
2021-01-17 23:42   ` [PATCH v2 3/6] worktree: teach worktree_lock_reason() to gently handle main worktree Rafael Silva
2021-01-17 23:42   ` [PATCH v2 4/6] worktree: teach `list --porcelain` to annotate locked worktree Rafael Silva
2021-01-18  3:55     ` Eric Sunshine
2021-01-19  8:20       ` Rafael Silva
2021-01-19 17:16         ` Eric Sunshine
2021-01-17 23:42   ` [PATCH v2 5/6] worktree: teach `list` to annotate prunable worktree Rafael Silva
2021-01-18  4:45     ` Eric Sunshine
2021-01-19 10:26       ` Rafael Silva
2021-01-19 17:23         ` Eric Sunshine
2021-01-17 23:42   ` [PATCH v2 6/6] worktree: teach `list` verbose mode Rafael Silva
2021-01-18  5:15     ` Eric Sunshine
2021-01-18 19:40       ` Eric Sunshine
2021-01-18  5:33   ` [PATCH v2 0/6] teach `worktree list` verbose mode and prunable annotations Eric Sunshine
2021-01-19 16:44     ` Rafael Silva
2021-01-19 21:27   ` [PATCH v3 0/7] " Rafael Silva
2021-01-19 21:27     ` [PATCH v3 1/7] worktree: libify should_prune_worktree() Rafael Silva
2021-01-19 21:27     ` [PATCH v3 2/7] worktree: teach worktree to lazy-load "prunable" reason Rafael Silva
2021-01-19 21:27     ` [PATCH v3 3/7] worktree: teach worktree_lock_reason() to gently handle main worktree Rafael Silva
2021-01-19 21:27     ` [PATCH v3 4/7] t2402: ensure locked worktree is properly cleaned up Rafael Silva
2021-01-24  7:50       ` Eric Sunshine
2021-01-24 10:19         ` Rafael Silva
2021-01-19 21:27     ` [PATCH v3 5/7] worktree: teach `list --porcelain` to annotate locked worktree Rafael Silva
2021-01-20 11:00       ` Phillip Wood
2021-01-21  3:18         ` Junio C Hamano
2021-01-21 15:25         ` Rafael Silva
2021-01-24  8:24         ` Eric Sunshine
2021-01-24  8:10       ` Eric Sunshine
2021-01-24 10:20         ` Rafael Silva
2021-01-19 21:27     ` [PATCH v3 6/7] worktree: teach `list` to annotate prunable worktree Rafael Silva
2021-01-21  3:28       ` Junio C Hamano
2021-01-21 15:09         ` Rafael Silva
2021-01-21 22:18           ` Junio C Hamano
2021-01-19 21:27     ` [PATCH v3 7/7] worktree: teach `list` verbose mode Rafael Silva
2021-01-24  8:42       ` Eric Sunshine
2021-01-24 10:21         ` Rafael Silva
2021-01-24  8:51     ` [PATCH v3 0/7] teach `worktree list` verbose mode and prunable annotations Eric Sunshine
2021-01-27  8:08       ` Rafael Silva
2021-01-27  8:03     ` Rafael Silva
2021-01-27  8:03       ` [PATCH v4 1/7] worktree: libify should_prune_worktree() Rafael Silva
2021-01-27  8:03       ` [PATCH v4 2/7] worktree: teach worktree to lazy-load "prunable" reason Rafael Silva
2021-01-27  8:03       ` [PATCH v4 3/7] worktree: teach worktree_lock_reason() to gently handle main worktree Rafael Silva
2021-01-27  8:03       ` [PATCH v4 4/7] t2402: ensure locked worktree is properly cleaned up Rafael Silva
2021-01-27  8:03       ` [PATCH v4 5/7] worktree: teach `list --porcelain` to annotate locked worktree Rafael Silva
2021-01-27  8:03       ` [PATCH v4 6/7] worktree: teach `list` to annotate prunable worktree Rafael Silva
2021-01-27  8:03       ` [PATCH v4 7/7] worktree: teach `list` verbose mode Rafael Silva
2021-01-30  7:04       ` [PATCH v3 0/7] teach `worktree list` verbose mode and prunable annotations Eric Sunshine
2021-01-30  9:42         ` Rafael Silva
2021-01-30 17:50         ` Junio C Hamano
2022-02-25 15:08 [PATCH] worktree: add -z option for list subcommand Phillip Wood via GitGitGadget
2022-02-25 17:59 ` Junio C Hamano
2022-02-28  8:35   ` Eric Sunshine
2022-02-28 16:10     ` Phillip Wood
2022-02-28 17:16     ` Junio C Hamano
2022-02-28 16:00   ` Phillip Wood
2022-02-28  8:16 ` Eric Sunshine
2022-02-28 11:08   ` Phillip Wood
2022-02-28  9:47 ` Jean-Noël Avila
2022-02-28 10:57   ` Phillip Wood

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