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From: Johannes Schindelin <Johannes.Schindelin@gmx.de>
To: Alban Gruin <alban.gruin@gmail.com>
Cc: git@vger.kernel.org, Junio C Hamano <gitster@pobox.com>,
	Phillip Wood <phillip.wood123@gmail.com>,
	Derrick Stolee <stolee@gmail.com>
Subject: Re: [PATCH v7 08/15] merge-one-file: rewrite in C
Date: Mon, 22 Mar 2021 23:20:33 +0100 (CET)	[thread overview]
Message-ID: <nycvar.QRO.7.76.6.2103222303210.50@tvgsbejvaqbjf.bet> (raw)
In-Reply-To: <20210317204939.17890-9-alban.gruin@gmail.com>

Hi Alban,

On Wed, 17 Mar 2021, Alban Gruin wrote:

> This rewrites `git merge-one-file' from shell to C.  This port is not
> completely straightforward: to save precious cycles by avoiding reading
> and flushing the index repeatedly, write temporary files when an
> operation can be performed in-memory, or allow other function to use the
> rewrite without forking nor worrying about the index, the calls to
> external processes are replaced by calls to functions in libgit.a:
>
>  - calls to `update-index --add --cacheinfo' are replaced by calls to
>    add_to_index_cacheinfo();
>
>  - calls to `update-index --remove' are replaced by calls to
>    remove_file_from_index();
>
>  - calls to `checkout-index -u -f' are replaced by calls to
>    checkout_entry();
>
>  - calls to `unpack-file' and `merge-files' are replaced by calls to
>    read_mmblob() and xdl_merge(), respectively, to merge files
>    in-memory;
>
>  - calls to `checkout-index -f --stage=2' are removed, as this is needed
>    to have the correct permission bits on the merged file from the
>    script, but not in the C version;
>
>  - calls to `update-index' are replaced by calls to add_file_to_index().
>
> The bulk of the rewrite is done in a new file in libgit.a,
> merge-strategies.c.  This will enable the resolve and octopus strategies
> to directly call it instead of forking.
>
> This also fixes a bug present in the original script: instead of
> checking if a _regular_ file exists when a file exists in the branch to
> merge, but not in our branch, the rewritten version checks if a file of
> any kind (ie. a directory, ...) exists.  This fixes the tests t6035.14,
> where the branch to merge had a new file, `a/b', but our branch had a
> directory there; it should have failed because a directory exists, but
> it did not because there was no regular file called `a/b'.  This test is
> now marked as successful.
>
> This also teaches `merge-index' to call merge_three_way() (when invoked
> with `--use=merge-one-file') without forking using a new callback,
> merge_one_file_func().
>
> To avoid any issue with a shrinking index because of the merge function
> used (directly in the process or by forking), as described earlier, the
> iterator of the loop of merge_all_index() is increased by the number of
> entries with the same name, minus the difference between the number of
> entries in the index before and after the merge.
>
> This should handle a shrinking index correctly, but could lead to issues
> with a growing index.  However, this case is not treated, as there is no
> callback that can produce such a case.

Nice!

> diff --git a/builtin/merge-index.c b/builtin/merge-index.c
> index fd5b1a5a92..04d38aa130 100644
> --- a/builtin/merge-index.c
> +++ b/builtin/merge-index.c
> @@ -38,7 +38,7 @@ static int merge_one_file_spawn(struct index_state *istate,
>  int cmd_merge_index(int argc, const char **argv, const char *prefix)
>  {
>  	int i, force_file = 0, err = 0, one_shot = 0, quiet = 0;
> -	merge_fn merge_action = merge_one_file_spawn;
> +	merge_fn merge_action;
>  	struct lock_file lock = LOCK_INIT;
>  	struct repository *r = the_repository;
>  	const char *use_internal = NULL;
> @@ -69,10 +69,13 @@ int cmd_merge_index(int argc, const char **argv, const char *prefix)
>
>  	if (skip_prefix(pgm, "--use=", &use_internal)) {
>  		if (!strcmp(use_internal, "merge-one-file"))
> -			pgm = "git-merge-one-file";
> +			merge_action = merge_one_file_func;
>  		else
>  			die(_("git merge-index: unknown internal program %s"), use_internal);
> -	}
> +
> +		repo_hold_locked_index(r, &lock, LOCK_DIE_ON_ERROR);
> +	} else
> +		merge_action = merge_one_file_spawn;

I would have a slight preference to keep the default initializer, because
that makes it easer to reason about. But if you _want_ to keep this patch
as-is, I won't object.

It is a bit sad that the conversion cannot be done more incrementally, as
there is a lot to unpack in the many different cases that are handled. It
looks correct, though.

Just one thing:

>
>  	for (; i < argc; i++) {
>  		const char *arg = argv[i];
> diff --git a/builtin/merge-one-file.c b/builtin/merge-one-file.c
> new file mode 100644
> index 0000000000..ad99c6dbd4
> --- /dev/null
> +++ b/builtin/merge-one-file.c
> @@ -0,0 +1,94 @@
> +/*
> + * Builtin "git merge-one-file"
> + *
> + * Copyright (c) 2020 Alban Gruin
> + *
> + * Based on git-merge-one-file.sh, written by Linus Torvalds.
> + *
> + * This is the git per-file merge utility, called with
> + *
> + *   argv[1] - original file object name (or empty)
> + *   argv[2] - file in branch1 object name (or empty)
> + *   argv[3] - file in branch2 object name (or empty)
> + *   argv[4] - pathname in repository
> + *   argv[5] - original file mode (or empty)
> + *   argv[6] - file in branch1 mode (or empty)
> + *   argv[7] - file in branch2 mode (or empty)
> + *
> + * Handle some trivial cases. The _really_ trivial cases have been
> + * handled already by git read-tree, but that one doesn't do any merges
> + * that might change the tree layout.
> + */
> +
> +#include "cache.h"
> +#include "builtin.h"
> +#include "lockfile.h"
> +#include "merge-strategies.h"
> +
> +static const char builtin_merge_one_file_usage[] =
> +	"git merge-one-file <orig blob> <our blob> <their blob> <path> "
> +	"<orig mode> <our mode> <their mode>\n\n"
> +	"Blob ids and modes should be empty for missing files.";
> +
> +static int read_mode(const char *name, const char *arg, unsigned int *mode)
> +{
> +	char *last;
> +	int ret = 0;
> +
> +	*mode = strtol(arg, &last, 8);
> +
> +	if (*last)
> +		ret = error(_("invalid '%s' mode: expected nothing, got '%c'"), name, *last);
> +	else if (!(S_ISREG(*mode) || S_ISDIR(*mode) || S_ISLNK(*mode)))
> +		ret = error(_("invalid '%s' mode: %o"), name, *mode);
> +
> +	return ret;
> +}
> +
> +int cmd_merge_one_file(int argc, const char **argv, const char *prefix)
> +{
> +	struct object_id orig_blob, our_blob, their_blob,
> +		*p_orig_blob = NULL, *p_our_blob = NULL, *p_their_blob = NULL;
> +	unsigned int orig_mode = 0, our_mode = 0, their_mode = 0, ret = 0;
> +	struct lock_file lock = LOCK_INIT;
> +	struct repository *r = the_repository;
> +
> +	if (argc != 8)
> +		usage(builtin_merge_one_file_usage);
> +
> +	if (repo_read_index(r) < 0)
> +		die("invalid index");
> +
> +	repo_hold_locked_index(r, &lock, LOCK_DIE_ON_ERROR);
> +
> +	if (!get_oid_hex(argv[1], &orig_blob)) {
> +		p_orig_blob = &orig_blob;
> +		ret = read_mode("orig", argv[5], &orig_mode);
> +	} else if (!*argv[1] && *argv[5])
> +		ret = error(_("no 'orig' object id given, but a mode was still given."));

Here, it looks as if the case of an empty `argv[1]` is not handled
_explicitly_, but we rely on `get_oid_hex()` to return non-zero, and then
we rely on the second arm _also_ not re-assigning `orig_blob`.

I wonder whether this could be checked, and whether it would make sense to
fold this, along with most of these 5 lines, into the `read_mode()` helper
function (DRYing up the code even further).

As for the rest of the patch, it is totally possible that I missed a bug,
but it looks correct to me, and the added regression tests give me a good
feeling about the patch, too.

Thanks,
Dscho

> +
> +	if (!get_oid_hex(argv[2], &our_blob)) {
> +		p_our_blob = &our_blob;
> +		ret = read_mode("our", argv[6], &our_mode);
> +	} else if (!*argv[2] && *argv[6])
> +		ret = error(_("no 'our' object id given, but a mode was still given."));
> +
> +	if (!get_oid_hex(argv[3], &their_blob)) {
> +		p_their_blob = &their_blob;
> +		ret = read_mode("their", argv[7], &their_mode);
> +	} else if (!*argv[3] && *argv[7])
> +		ret = error(_("no 'their' object id given, but a mode was still given."));
> +
> +	if (ret)
> +		return ret;
> +
> +	ret = merge_three_way(r->index, p_orig_blob, p_our_blob, p_their_blob,
> +			      argv[4], orig_mode, our_mode, their_mode);
> +
> +	if (ret) {
> +		rollback_lock_file(&lock);
> +		return !!ret;
> +	}
> +
> +	return write_locked_index(r->index, &lock, COMMIT_LOCK);
> +}
> diff --git a/git-merge-one-file.sh b/git-merge-one-file.sh
> deleted file mode 100755
> index f6d9852d2f..0000000000
> --- a/git-merge-one-file.sh
> +++ /dev/null
> @@ -1,167 +0,0 @@
> -#!/bin/sh
> -#
> -# Copyright (c) Linus Torvalds, 2005
> -#
> -# This is the git per-file merge script, called with
> -#
> -#   $1 - original file SHA1 (or empty)
> -#   $2 - file in branch1 SHA1 (or empty)
> -#   $3 - file in branch2 SHA1 (or empty)
> -#   $4 - pathname in repository
> -#   $5 - original file mode (or empty)
> -#   $6 - file in branch1 mode (or empty)
> -#   $7 - file in branch2 mode (or empty)
> -#
> -# Handle some trivial cases.. The _really_ trivial cases have
> -# been handled already by git read-tree, but that one doesn't
> -# do any merges that might change the tree layout.
> -
> -USAGE='<orig blob> <our blob> <their blob> <path>'
> -USAGE="$USAGE <orig mode> <our mode> <their mode>"
> -LONG_USAGE="usage: git merge-one-file $USAGE
> -
> -Blob ids and modes should be empty for missing files."
> -
> -SUBDIRECTORY_OK=Yes
> -. git-sh-setup
> -cd_to_toplevel
> -require_work_tree
> -
> -if test $# != 7
> -then
> -	echo "$LONG_USAGE"
> -	exit 1
> -fi
> -
> -case "${1:-.}${2:-.}${3:-.}" in
> -#
> -# Deleted in both or deleted in one and unchanged in the other
> -#
> -"$1.." | "$1.$1" | "$1$1.")
> -	if { test -z "$6" && test "$5" != "$7"; } ||
> -	   { test -z "$7" && test "$5" != "$6"; }
> -	then
> -		echo "ERROR: File $4 deleted on one branch but had its" >&2
> -		echo "ERROR: permissions changed on the other." >&2
> -		exit 1
> -	fi
> -
> -	if test -n "$2"
> -	then
> -		echo "Removing $4"
> -	else
> -		# read-tree checked that index matches HEAD already,
> -		# so we know we do not have this path tracked.
> -		# there may be an unrelated working tree file here,
> -		# which we should just leave unmolested.  Make sure
> -		# we do not have it in the index, though.
> -		exec git update-index --remove -- "$4"
> -	fi
> -	if test -f "$4"
> -	then
> -		rm -f -- "$4" &&
> -		rmdir -p "$(expr "z$4" : 'z\(.*\)/')" 2>/dev/null || :
> -	fi &&
> -		exec git update-index --remove -- "$4"
> -	;;
> -
> -#
> -# Added in one.
> -#
> -".$2.")
> -	# the other side did not add and we added so there is nothing
> -	# to be done, except making the path merged.
> -	exec git update-index --add --cacheinfo "$6" "$2" "$4"
> -	;;
> -"..$3")
> -	echo "Adding $4"
> -	if test -f "$4"
> -	then
> -		echo "ERROR: untracked $4 is overwritten by the merge." >&2
> -		exit 1
> -	fi
> -	git update-index --add --cacheinfo "$7" "$3" "$4" &&
> -		exec git checkout-index -u -f -- "$4"
> -	;;
> -
> -#
> -# Added in both, identically (check for same permissions).
> -#
> -".$3$2")
> -	if test "$6" != "$7"
> -	then
> -		echo "ERROR: File $4 added identically in both branches," >&2
> -		echo "ERROR: but permissions conflict $6->$7." >&2
> -		exit 1
> -	fi
> -	echo "Adding $4"
> -	git update-index --add --cacheinfo "$6" "$2" "$4" &&
> -		exec git checkout-index -u -f -- "$4"
> -	;;
> -
> -#
> -# Modified in both, but differently.
> -#
> -"$1$2$3" | ".$2$3")
> -
> -	case ",$6,$7," in
> -	*,120000,*)
> -		echo "ERROR: $4: Not merging symbolic link changes." >&2
> -		exit 1
> -		;;
> -	*,160000,*)
> -		echo "ERROR: $4: Not merging conflicting submodule changes." >&2
> -		exit 1
> -		;;
> -	esac
> -
> -	src1=$(git unpack-file $2)
> -	src2=$(git unpack-file $3)
> -	case "$1" in
> -	'')
> -		echo "Added $4 in both, but differently."
> -		orig=$(git unpack-file $(git hash-object /dev/null))
> -		;;
> -	*)
> -		echo "Auto-merging $4"
> -		orig=$(git unpack-file $1)
> -		;;
> -	esac
> -
> -	git merge-file "$src1" "$orig" "$src2"
> -	ret=$?
> -	msg=
> -	if test $ret != 0 || test -z "$1"
> -	then
> -		msg='content conflict'
> -		ret=1
> -	fi
> -
> -	# Create the working tree file, using "our tree" version from the
> -	# index, and then store the result of the merge.
> -	git checkout-index -f --stage=2 -- "$4" && cat "$src1" >"$4" || exit 1
> -	rm -f -- "$orig" "$src1" "$src2"
> -
> -	if test "$6" != "$7"
> -	then
> -		if test -n "$msg"
> -		then
> -			msg="$msg, "
> -		fi
> -		msg="${msg}permissions conflict: $5->$6,$7"
> -		ret=1
> -	fi
> -
> -	if test $ret != 0
> -	then
> -		echo "ERROR: $msg in $4" >&2
> -		exit 1
> -	fi
> -	exec git update-index -- "$4"
> -	;;
> -
> -*)
> -	echo "ERROR: $4: Not handling case $1 -> $2 -> $3" >&2
> -	;;
> -esac
> -exit 1
> diff --git a/git.c b/git.c
> index 9bc077a025..95eb74efe1 100644
> --- a/git.c
> +++ b/git.c
> @@ -544,6 +544,7 @@ static struct cmd_struct commands[] = {
>  	{ "merge-file", cmd_merge_file, RUN_SETUP_GENTLY },
>  	{ "merge-index", cmd_merge_index, RUN_SETUP | NO_PARSEOPT },
>  	{ "merge-ours", cmd_merge_ours, RUN_SETUP | NO_PARSEOPT },
> +	{ "merge-one-file", cmd_merge_one_file, RUN_SETUP | NEED_WORK_TREE | NO_PARSEOPT },
>  	{ "merge-recursive", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE | NO_PARSEOPT },
>  	{ "merge-recursive-ours", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE | NO_PARSEOPT },
>  	{ "merge-recursive-theirs", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE | NO_PARSEOPT },
> diff --git a/merge-strategies.c b/merge-strategies.c
> index c80f964612..2717af51fd 100644
> --- a/merge-strategies.c
> +++ b/merge-strategies.c
> @@ -1,5 +1,197 @@
>  #include "cache.h"
> +#include "dir.h"
>  #include "merge-strategies.h"
> +#include "xdiff-interface.h"
> +
> +static int add_merge_result_to_index(struct index_state *istate, unsigned int mode,
> +				     const struct object_id *oid, const char *path,
> +				     int checkout)
> +{
> +	struct cache_entry *ce;
> +	int res;
> +
> +	res = add_to_index_cacheinfo(istate, mode, oid, path, 0, 1, 1, &ce);
> +	if (res == -1)
> +		return error(_("Invalid path '%s'"), path);
> +	else if (res == -2)
> +		return -1;
> +
> +	if (checkout) {
> +		struct checkout state = CHECKOUT_INIT;
> +
> +		state.istate = istate;
> +		state.force = 1;
> +		state.base_dir = "";
> +		state.base_dir_len = 0;
> +
> +		if (checkout_entry(ce, &state, NULL, NULL) < 0)
> +			return error(_("%s: cannot checkout file"), path);
> +	}
> +
> +	return 0;
> +}
> +
> +static int merge_one_file_deleted(struct index_state *istate,
> +				  const struct object_id *our_blob,
> +				  const struct object_id *their_blob, const char *path,
> +				  unsigned int orig_mode, unsigned int our_mode, unsigned int their_mode)
> +{
> +	if ((!our_blob && orig_mode != their_mode) ||
> +	    (!their_blob && orig_mode != our_mode))
> +		return error(_("File %s deleted on one branch but had its "
> +			       "permissions changed on the other."), path);
> +
> +	if (our_blob) {
> +		printf(_("Removing %s\n"), path);
> +
> +		if (file_exists(path))
> +			remove_path(path);
> +	}
> +
> +	if (remove_file_from_index(istate, path))
> +		return error("%s: cannot remove from the index", path);
> +	return 0;
> +}
> +
> +static int do_merge_one_file(struct index_state *istate,
> +			     const struct object_id *orig_blob,
> +			     const struct object_id *our_blob,
> +			     const struct object_id *their_blob, const char *path,
> +			     unsigned int orig_mode, unsigned int our_mode, unsigned int their_mode)
> +{
> +	int ret, i, dest;
> +	ssize_t written;
> +	mmbuffer_t result = {NULL, 0};
> +	mmfile_t mmfs[3];
> +	xmparam_t xmp = {{0}};
> +
> +	if (our_mode == S_IFLNK || their_mode == S_IFLNK)
> +		return error(_("%s: Not merging symbolic link changes."), path);
> +	else if (our_mode == S_IFGITLINK || their_mode == S_IFGITLINK)
> +		return error(_("%s: Not merging conflicting submodule changes."), path);
> +
> +	if (orig_blob) {
> +		printf(_("Auto-merging %s\n"), path);
> +		read_mmblob(mmfs + 0, orig_blob);
> +	} else {
> +		printf(_("Added %s in both, but differently.\n"), path);
> +		read_mmblob(mmfs + 0, &null_oid);
> +	}
> +
> +	read_mmblob(mmfs + 1, our_blob);
> +	read_mmblob(mmfs + 2, their_blob);
> +
> +	xmp.level = XDL_MERGE_ZEALOUS_ALNUM;
> +	xmp.style = 0;
> +	xmp.favor = 0;
> +
> +	ret = xdl_merge(mmfs + 0, mmfs + 1, mmfs + 2, &xmp, &result);
> +
> +	for (i = 0; i < 3; i++)
> +		free(mmfs[i].ptr);
> +
> +	if (ret < 0) {
> +		free(result.ptr);
> +		return error(_("Failed to execute internal merge"));
> +	}
> +
> +	if (ret > 0 || !orig_blob)
> +		ret = error(_("content conflict in %s"), path);
> +	if (our_mode != their_mode)
> +		ret = error(_("permission conflict: %o->%o,%o in %s"),
> +			    orig_mode, our_mode, their_mode, path);
> +
> +	unlink(path);
> +	if ((dest = open(path, O_WRONLY | O_CREAT, our_mode)) < 0) {
> +		free(result.ptr);
> +		return error_errno(_("failed to open file '%s'"), path);
> +	}
> +
> +	written = write_in_full(dest, result.ptr, result.size);
> +	close(dest);
> +
> +	free(result.ptr);
> +
> +	if (written < 0)
> +		return error_errno(_("failed to write to '%s'"), path);
> +	if (ret)
> +		return ret;
> +
> +	return add_file_to_index(istate, path, 0);
> +}
> +
> +int merge_three_way(struct index_state *istate,
> +		    const struct object_id *orig_blob,
> +		    const struct object_id *our_blob,
> +		    const struct object_id *their_blob, const char *path,
> +		    unsigned int orig_mode, unsigned int our_mode, unsigned int their_mode)
> +{
> +	if (orig_blob &&
> +	    ((!our_blob && !their_blob) ||
> +	     (!their_blob && our_blob && oideq(orig_blob, our_blob)) ||
> +	     (!our_blob && their_blob && oideq(orig_blob, their_blob)))) {
> +		/* Deleted in both or deleted in one and unchanged in the other. */
> +		return merge_one_file_deleted(istate, our_blob, their_blob, path,
> +					      orig_mode, our_mode, their_mode);
> +	} else if (!orig_blob && our_blob && !their_blob) {
> +		/*
> +		 * Added in ours.  The other side did not add and we
> +		 * added so there is nothing to be done, except making
> +		 * the path merged.
> +		 */
> +		return add_merge_result_to_index(istate, our_mode, our_blob, path, 0);
> +	} else if (!orig_blob && !our_blob && their_blob) {
> +		printf(_("Adding %s\n"), path);
> +
> +		if (file_exists(path))
> +			return error(_("untracked %s is overwritten by the merge."), path);
> +
> +		return add_merge_result_to_index(istate, their_mode, their_blob, path, 1);
> +	} else if (!orig_blob && our_blob && their_blob &&
> +		   oideq(our_blob, their_blob)) {
> +		/* Added in both, identically (check for same permissions). */
> +		if (our_mode != their_mode)
> +			return error(_("File %s added identically in both branches, "
> +				       "but permissions conflict %o->%o."),
> +				     path, our_mode, their_mode);
> +
> +		printf(_("Adding %s\n"), path);
> +
> +		return add_merge_result_to_index(istate, our_mode, our_blob, path, 1);
> +	} else if (our_blob && their_blob) {
> +		/* Modified in both, but differently. */
> +		return do_merge_one_file(istate,
> +					 orig_blob, our_blob, their_blob, path,
> +					 orig_mode, our_mode, their_mode);
> +	} else {
> +		char orig_hex[GIT_MAX_HEXSZ] = {0}, our_hex[GIT_MAX_HEXSZ] = {0},
> +			their_hex[GIT_MAX_HEXSZ] = {0};
> +
> +		if (orig_blob)
> +			oid_to_hex_r(orig_hex, orig_blob);
> +		if (our_blob)
> +			oid_to_hex_r(our_hex, our_blob);
> +		if (their_blob)
> +			oid_to_hex_r(their_hex, their_blob);
> +
> +		return error(_("%s: Not handling case %s -> %s -> %s"),
> +			     path, orig_hex, our_hex, their_hex);
> +	}
> +
> +	return 0;
> +}
> +
> +int merge_one_file_func(struct index_state *istate,
> +			const struct object_id *orig_blob,
> +			const struct object_id *our_blob,
> +			const struct object_id *their_blob, const char *path,
> +			unsigned int orig_mode, unsigned int our_mode, unsigned int their_mode,
> +			void *data)
> +{
> +	return merge_three_way(istate,
> +			       orig_blob, our_blob, their_blob, path,
> +			       orig_mode, our_mode, their_mode);
> +}
>
>  static int merge_entry(struct index_state *istate, int quiet, unsigned int pos,
>  		       const char *path, int *err, merge_fn fn, void *data)
> @@ -54,17 +246,24 @@ int merge_all_index(struct index_state *istate, int oneshot, int quiet,
>  		    merge_fn fn, void *data)
>  {
>  	int err = 0, ret;
> -	unsigned int i;
> +	unsigned int i, prev_nr;
>
>  	for (i = 0; i < istate->cache_nr; i++) {
>  		const struct cache_entry *ce = istate->cache[i];
>  		if (!ce_stage(ce))
>  			continue;
>
> +		prev_nr = istate->cache_nr;
>  		ret = merge_entry(istate, quiet || oneshot, i, ce->name, &err, fn, data);
> -		if (ret > 0)
> -			i += ret - 1;
> -		else if (ret == -1)
> +		if (ret > 0) {
> +			/*
> +			 * Don't bother handling an index that has
> +			 * grown, since merge_one_file_func() can't grow
> +			 * it, and merge_one_file_spawn() can't change
> +			 * it.
> +			 */
> +			i += ret - (prev_nr - istate->cache_nr) - 1;
> +		} else if (ret == -1)
>  			return -1;
>
>  		if (err && !oneshot)
> diff --git a/merge-strategies.h b/merge-strategies.h
> index 88f476f170..8705a550ca 100644
> --- a/merge-strategies.h
> +++ b/merge-strategies.h
> @@ -3,6 +3,12 @@
>
>  #include "object.h"
>
> +int merge_three_way(struct index_state *istate,
> +		    const struct object_id *orig_blob,
> +		    const struct object_id *our_blob,
> +		    const struct object_id *their_blob, const char *path,
> +		    unsigned int orig_mode, unsigned int our_mode, unsigned int their_mode);
> +
>  typedef int (*merge_fn)(struct index_state *istate,
>  			const struct object_id *orig_blob,
>  			const struct object_id *our_blob,
> @@ -10,6 +16,13 @@ typedef int (*merge_fn)(struct index_state *istate,
>  			unsigned int orig_mode, unsigned int our_mode, unsigned int their_mode,
>  			void *data);
>
> +int merge_one_file_func(struct index_state *istate,
> +			const struct object_id *orig_blob,
> +			const struct object_id *our_blob,
> +			const struct object_id *their_blob, const char *path,
> +			unsigned int orig_mode, unsigned int our_mode, unsigned int their_mode,
> +			void *data);
> +
>  int merge_index_path(struct index_state *istate, int oneshot, int quiet,
>  		     const char *path, merge_fn fn, void *data);
>  int merge_all_index(struct index_state *istate, int oneshot, int quiet,
> diff --git a/t/t6060-merge-index.sh b/t/t6060-merge-index.sh
> index d0cdfeddc1..d9c07965dc 100755
> --- a/t/t6060-merge-index.sh
> +++ b/t/t6060-merge-index.sh
> @@ -72,7 +72,7 @@ test_expect_success 'merge-one-file fails without a work tree' '
>  	(cd bare.git &&
>  	 GIT_INDEX_FILE=$PWD/merge.index &&
>  	 export GIT_INDEX_FILE &&
> -	 test_must_fail git merge-index git-merge-one-file -a
> +	 test_must_fail git merge-index --use=merge-one-file -a
>  	)
>  '
>
> diff --git a/t/t6415-merge-dir-to-symlink.sh b/t/t6415-merge-dir-to-symlink.sh
> index 2ce104aca7..075da1f55f 100755
> --- a/t/t6415-merge-dir-to-symlink.sh
> +++ b/t/t6415-merge-dir-to-symlink.sh
> @@ -97,7 +97,7 @@ test_expect_success SYMLINKS 'a/b was resolved as symlink' '
>  	test -h a/b
>  '
>
> -test_expect_failure 'do not lose untracked in merge (resolve)' '
> +test_expect_success 'do not lose untracked in merge (resolve)' '
>  	git reset --hard &&
>  	git checkout baseline^0 &&
>  	>a/b/c/e &&
> --
> 2.31.0
>
>

  reply	other threads:[~2021-03-22 22:21 UTC|newest]

Thread overview: 221+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-25 12:19 [RFC PATCH v1 00/17] Rewrite the remaining merge strategies from shell to C Alban Gruin
2020-06-25 12:19 ` [RFC PATCH v1 01/17] t6027: modernise tests Alban Gruin
2020-06-25 12:19 ` [RFC PATCH v1 02/17] merge-one-file: rewrite in C Alban Gruin
2020-06-25 14:55   ` Chris Torek
2020-06-25 15:16   ` Phillip Wood
2020-06-25 18:17     ` Phillip Wood
2020-06-26 14:33       ` Phillip Wood
2020-07-12 11:22     ` Alban Gruin
2020-06-25 12:19 ` [RFC PATCH v1 03/17] merge-one-file: remove calls to external processes Alban Gruin
2020-06-25 12:19 ` [RFC PATCH v1 04/17] merge-one-file: use error() instead of fprintf(stderr, ...) Alban Gruin
2020-06-25 12:19 ` [RFC PATCH v1 05/17] merge-one-file: libify merge_one_file() Alban Gruin
2020-06-25 12:19 ` [RFC PATCH v1 06/17] merge-index: libify merge_one_path() and merge_all() Alban Gruin
2020-06-26 10:13   ` Phillip Wood
2020-06-26 14:32     ` Phillip Wood
2020-07-12 11:36     ` Alban Gruin
2020-07-12 18:02       ` Phillip Wood
2020-07-12 20:10         ` Alban Gruin
2020-06-25 12:19 ` [RFC PATCH v1 07/17] merge-resolve: rewrite in C Alban Gruin
2020-06-25 12:19 ` [RFC PATCH v1 08/17] merge-resolve: remove calls to external processes Alban Gruin
2020-06-25 12:19 ` [RFC PATCH v1 09/17] merge-resolve: libify merge_resolve() Alban Gruin
2020-06-25 12:19 ` [RFC PATCH v1 10/17] merge-recursive: move better_branch_name() to merge.c Alban Gruin
2020-06-25 12:19 ` [RFC PATCH v1 11/17] merge-octopus: rewrite in C Alban Gruin
2020-06-25 12:19 ` [RFC PATCH v1 12/17] merge-octopus: remove calls to external processes Alban Gruin
2020-06-25 12:19 ` [RFC PATCH v1 13/17] merge-octopus: libify merge_octopus() Alban Gruin
2020-06-25 12:19 ` [RFC PATCH v1 14/17] merge: use the "resolve" strategy without forking Alban Gruin
2020-06-25 12:19 ` [RFC PATCH v1 15/17] merge: use the "octopus" " Alban Gruin
2020-06-25 12:19 ` [RFC PATCH v1 16/17] sequencer: use the "resolve" " Alban Gruin
2020-06-25 16:11   ` Phillip Wood
2020-07-12 11:27     ` Alban Gruin
2020-06-25 12:19 ` [RFC PATCH v1 17/17] sequencer: use the "octopus" merge " Alban Gruin
2020-09-01 10:56 ` [PATCH v2 00/11] Rewrite the remaining merge strategies from shell to C Alban Gruin
2020-09-01 10:56   ` [PATCH v2 01/11] t6027: modernise tests Alban Gruin
2020-09-01 10:56   ` [PATCH v2 02/11] merge-one-file: rewrite in C Alban Gruin
2020-09-01 21:06     ` Junio C Hamano
2020-09-02 14:50       ` Alban Gruin
2020-09-01 10:56   ` [PATCH v2 03/11] merge-index: libify merge_one_path() and merge_all() Alban Gruin
2020-09-01 21:11     ` Junio C Hamano
2020-09-02 15:37       ` Alban Gruin
2020-09-01 10:56   ` [PATCH v2 04/11] merge-index: don't fork if the requested program is `git-merge-one-file' Alban Gruin
2020-09-01 10:56   ` [PATCH v2 05/11] merge-resolve: rewrite in C Alban Gruin
2020-09-01 10:57   ` [PATCH v2 06/11] merge-recursive: move better_branch_name() to merge.c Alban Gruin
2020-09-01 10:57   ` [PATCH v2 07/11] merge-octopus: rewrite in C Alban Gruin
2020-09-01 10:57   ` [PATCH v2 08/11] merge: use the "resolve" strategy without forking Alban Gruin
2020-09-01 10:57   ` [PATCH v2 09/11] merge: use the "octopus" " Alban Gruin
2020-09-01 10:57   ` [PATCH v2 10/11] sequencer: use the "resolve" " Alban Gruin
2020-09-01 10:57   ` [PATCH v2 11/11] sequencer: use the "octopus" merge " Alban Gruin
2020-10-05 12:26   ` [PATCH v3 00/11] Rewrite the remaining merge strategies from shell to C Alban Gruin
2020-10-05 12:26     ` [PATCH v3 01/11] t6027: modernise tests Alban Gruin
2020-10-06 20:50       ` Junio C Hamano
2020-10-05 12:26     ` [PATCH v3 02/11] merge-one-file: rewrite in C Alban Gruin
2020-10-06 22:01       ` Junio C Hamano
2020-10-21 19:47         ` Alban Gruin
2020-10-21 20:28           ` Junio C Hamano
2020-10-21 21:20             ` Junio C Hamano
2020-10-21 20:30           ` Junio C Hamano
2020-10-05 12:26     ` [PATCH v3 03/11] merge-index: libify merge_one_path() and merge_all() Alban Gruin
2020-10-09  4:48       ` Junio C Hamano
2020-11-06 19:53         ` Alban Gruin
2020-10-05 12:26     ` [PATCH v3 04/11] merge-index: don't fork if the requested program is `git-merge-one-file' Alban Gruin
2020-10-16 19:07       ` Junio C Hamano
2020-10-05 12:26     ` [PATCH v3 05/11] merge-resolve: rewrite in C Alban Gruin
2020-10-16 19:19       ` Junio C Hamano
2020-11-06 19:53         ` Alban Gruin
2020-10-05 12:26     ` [PATCH v3 06/11] merge-recursive: move better_branch_name() to merge.c Alban Gruin
2020-10-05 12:26     ` [PATCH v3 07/11] merge-octopus: rewrite in C Alban Gruin
2020-10-05 12:26     ` [PATCH v3 08/11] merge: use the "resolve" strategy without forking Alban Gruin
2020-10-05 12:26     ` [PATCH v3 09/11] merge: use the "octopus" " Alban Gruin
2020-10-05 12:26     ` [PATCH v3 10/11] sequencer: use the "resolve" " Alban Gruin
2020-10-05 12:26     ` [PATCH v3 11/11] sequencer: use the "octopus" merge " Alban Gruin
2020-10-07  6:57     ` [PATCH v3 00/11] Rewrite the remaining merge strategies from shell to C Johannes Schindelin
2020-11-13 11:04     ` [PATCH v4 00/12] " Alban Gruin
2020-11-13 11:04       ` [PATCH v4 01/12] t6027: modernise tests Alban Gruin
2020-11-13 11:04       ` [PATCH v4 02/12] update-index: move add_cacheinfo() to read-cache.c Alban Gruin
2020-11-13 11:04       ` [PATCH v4 03/12] merge-one-file: rewrite in C Alban Gruin
2020-11-13 11:04       ` [PATCH v4 04/12] merge-index: libify merge_one_path() and merge_all() Alban Gruin
2020-11-13 11:04       ` [PATCH v4 05/12] merge-index: don't fork if the requested program is `git-merge-one-file' Alban Gruin
2020-11-13 11:04       ` [PATCH v4 06/12] merge-resolve: rewrite in C Alban Gruin
2020-11-13 11:04       ` [PATCH v4 07/12] merge-recursive: move better_branch_name() to merge.c Alban Gruin
2020-11-13 11:04       ` [PATCH v4 08/12] merge-octopus: rewrite in C Alban Gruin
2020-11-13 11:04       ` [PATCH v4 09/12] merge: use the "resolve" strategy without forking Alban Gruin
2020-11-13 11:04       ` [PATCH v4 10/12] merge: use the "octopus" " Alban Gruin
2020-11-13 11:04       ` [PATCH v4 11/12] sequencer: use the "resolve" " Alban Gruin
2020-11-13 11:04       ` [PATCH v4 12/12] sequencer: use the "octopus" merge " Alban Gruin
2020-11-16 10:21       ` [PATCH v5 00/12] Rewrite the remaining merge strategies from shell to C Alban Gruin
2020-11-16 10:21         ` [PATCH v5 01/12] t6027: modernise tests Alban Gruin
2020-11-16 10:21         ` [PATCH v5 02/12] update-index: move add_cacheinfo() to read-cache.c Alban Gruin
2020-11-16 10:21         ` [PATCH v5 03/12] merge-one-file: rewrite in C Alban Gruin
2020-11-16 10:21         ` [PATCH v5 04/12] merge-index: libify merge_one_path() and merge_all() Alban Gruin
2020-11-16 10:21         ` [PATCH v5 05/12] merge-index: don't fork if the requested program is `git-merge-one-file' Alban Gruin
2020-11-16 10:21         ` [PATCH v5 06/12] merge-resolve: rewrite in C Alban Gruin
2020-11-16 10:21         ` [PATCH v5 07/12] merge-recursive: move better_branch_name() to merge.c Alban Gruin
2020-11-16 10:21         ` [PATCH v5 08/12] merge-octopus: rewrite in C Alban Gruin
2020-11-16 10:21         ` [PATCH v5 09/12] merge: use the "resolve" strategy without forking Alban Gruin
2020-11-16 10:21         ` [PATCH v5 10/12] merge: use the "octopus" " Alban Gruin
2020-11-16 10:21         ` [PATCH v5 11/12] sequencer: use the "resolve" " Alban Gruin
2020-11-16 10:21         ` [PATCH v5 12/12] sequencer: use the "octopus" merge " Alban Gruin
2020-11-24 11:53         ` [PATCH v6 00/13] Rewrite the remaining merge strategies from shell to C Alban Gruin
2020-11-24 11:53           ` [PATCH v6 01/13] t6407: modernise tests Alban Gruin
2020-11-24 11:53           ` [PATCH v6 02/13] t6060: modify multiple files to expose a possible issue with merge-index Alban Gruin
2020-11-24 11:53           ` [PATCH v6 03/13] update-index: move add_cacheinfo() to read-cache.c Alban Gruin
2020-12-22 20:54             ` Junio C Hamano
2020-11-24 11:53           ` [PATCH v6 04/13] merge-one-file: rewrite in C Alban Gruin
2020-12-22 21:36             ` Junio C Hamano
2021-01-03 22:41               ` Alban Gruin
2021-01-08  6:54                 ` Junio C Hamano
2020-11-24 11:53           ` [PATCH v6 05/13] merge-index: libify merge_one_path() and merge_all() Alban Gruin
2021-01-05 15:59             ` Derrick Stolee
2021-01-05 23:20               ` Alban Gruin
2020-11-24 11:53           ` [PATCH v6 06/13] merge-index: don't fork if the requested program is `git-merge-one-file' Alban Gruin
2021-01-05 16:11             ` Derrick Stolee
2021-01-05 17:35               ` Martin Ågren
2021-01-05 23:20                 ` Alban Gruin
2021-01-05 23:20               ` Alban Gruin
2021-01-06  2:04                 ` Junio C Hamano
2021-01-10 17:15                   ` Alban Gruin
2021-01-10 20:51                     ` Junio C Hamano
2021-03-08 20:32                       ` Alban Gruin
2020-11-24 11:53           ` [PATCH v6 07/13] merge-resolve: rewrite in C Alban Gruin
2020-11-24 11:53           ` [PATCH v6 08/13] merge-recursive: move better_branch_name() to merge.c Alban Gruin
2021-01-05 16:19             ` Derrick Stolee
2020-11-24 11:53           ` [PATCH v6 09/13] merge-octopus: rewrite in C Alban Gruin
2021-01-05 16:40             ` Derrick Stolee
2020-11-24 11:53           ` [PATCH v6 10/13] merge: use the "resolve" strategy without forking Alban Gruin
2021-01-05 16:45             ` Derrick Stolee
2020-11-24 11:53           ` [PATCH v6 11/13] merge: use the "octopus" " Alban Gruin
2020-11-24 11:53           ` [PATCH v6 12/13] sequencer: use the "resolve" " Alban Gruin
2020-11-24 11:53           ` [PATCH v6 13/13] sequencer: use the "octopus" merge " Alban Gruin
2020-11-24 19:34           ` [PATCH v6 00/13] Rewrite the remaining merge strategies from shell to C SZEDER Gábor
2021-01-05 16:50           ` Derrick Stolee
2021-03-17 20:49           ` [PATCH v7 00/15] " Alban Gruin
2021-03-17 20:49             ` [PATCH v7 01/15] t6407: modernise tests Alban Gruin
2021-03-17 20:49             ` [PATCH v7 02/15] t6060: modify multiple files to expose a possible issue with merge-index Alban Gruin
2021-03-17 20:49             ` [PATCH v7 03/15] t6060: add tests for removed files Alban Gruin
2021-03-22 21:36               ` Johannes Schindelin
2021-03-23 20:43                 ` Alban Gruin
2021-03-17 20:49             ` [PATCH v7 04/15] merge-index: libify merge_one_path() and merge_all() Alban Gruin
2021-03-17 20:49             ` [PATCH v7 05/15] merge-index: drop the index Alban Gruin
2021-03-17 20:49             ` [PATCH v7 06/15] merge-index: add a new way to invoke `git-merge-one-file' Alban Gruin
2021-03-17 20:49             ` [PATCH v7 07/15] update-index: move add_cacheinfo() to read-cache.c Alban Gruin
2021-03-22 21:59               ` Johannes Schindelin
2021-03-23 20:45                 ` Alban Gruin
2021-03-17 20:49             ` [PATCH v7 08/15] merge-one-file: rewrite in C Alban Gruin
2021-03-22 22:20               ` Johannes Schindelin [this message]
2021-03-23 20:53                 ` Alban Gruin
2021-03-24  9:10                   ` Johannes Schindelin
2021-04-10 14:17                     ` Alban Gruin
2021-03-17 20:49             ` [PATCH v7 09/15] merge-resolve: " Alban Gruin
2021-03-23 22:21               ` Johannes Schindelin
2021-04-10 14:17                 ` Alban Gruin
2021-03-17 20:49             ` [PATCH v7 10/15] merge-recursive: move better_branch_name() to merge.c Alban Gruin
2021-03-17 20:49             ` [PATCH v7 11/15] merge-octopus: rewrite in C Alban Gruin
2021-03-23 23:58               ` Johannes Schindelin
2021-03-17 20:49             ` [PATCH v7 12/15] merge: use the "resolve" strategy without forking Alban Gruin
2021-03-17 20:49             ` [PATCH v7 13/15] merge: use the "octopus" " Alban Gruin
2021-03-17 20:49             ` [PATCH v7 14/15] sequencer: use the "resolve" " Alban Gruin
2021-03-17 20:49             ` [PATCH v7 15/15] sequencer: use the "octopus" merge " Alban Gruin
2022-08-09 18:54             ` [PATCH v8 00/14] Rewrite the remaining merge strategies from shell to C Alban Gruin
2022-08-09 18:54               ` [PATCH v8 01/14] t6060: modify multiple files to expose a possible issue with merge-index Alban Gruin
2022-08-09 18:54               ` [PATCH v8 02/14] t6060: add tests for removed files Alban Gruin
2022-08-09 18:54               ` [PATCH v8 03/14] merge-index: libify merge_one_path() and merge_all() Alban Gruin
2022-08-17  2:10                 ` Ævar Arnfjörð Bjarmason
2022-08-09 18:54               ` [PATCH v8 04/14] merge-index: drop the index Alban Gruin
2022-08-09 18:54               ` [PATCH v8 05/14] merge-index: add a new way to invoke `git-merge-one-file' Alban Gruin
2022-08-09 21:36                 ` Johannes Schindelin
2022-08-10 13:14                   ` Phillip Wood
2022-08-09 18:54               ` [PATCH v8 06/14] update-index: move add_cacheinfo() to read-cache.c Alban Gruin
2022-08-09 18:54               ` [PATCH v8 07/14] merge-one-file: rewrite in C Alban Gruin
2022-08-09 22:01                 ` Johannes Schindelin
2022-08-09 18:54               ` [PATCH v8 08/14] merge-resolve: " Alban Gruin
2022-08-10 15:03                 ` Phillip Wood
2022-08-10 21:20                   ` Junio C Hamano
2022-08-16 12:09                     ` Johannes Schindelin
2022-08-16 19:36                       ` Junio C Hamano
2022-08-17  9:42                         ` Johannes Schindelin
2022-08-17 19:06                           ` Elijah Newren
2022-08-17 19:18                             ` Junio C Hamano
2022-08-18 14:24                               ` Ævar Arnfjörð Bjarmason
2022-08-18 17:32                                 ` Junio C Hamano
2022-08-19  1:43                                 ` Elijah Newren
2022-08-19  2:45                                   ` Ævar Arnfjörð Bjarmason
2022-08-19  4:27                                     ` Elijah Newren
2022-08-17 19:12                           ` Junio C Hamano
2022-08-16 12:17                   ` Johannes Schindelin
2022-08-16 14:02                     ` Phillip Wood
2022-08-17  2:16                 ` Ævar Arnfjörð Bjarmason
2022-08-18 14:43                 ` Ævar Arnfjörð Bjarmason
2022-08-09 18:54               ` [PATCH v8 09/14] merge-recursive: move better_branch_name() to merge.c Alban Gruin
2022-08-09 18:54               ` [PATCH v8 10/14] merge-octopus: rewrite in C Alban Gruin
2022-08-09 18:54               ` [PATCH v8 11/14] merge: use the "resolve" strategy without forking Alban Gruin
2022-08-13 16:18                 ` Junio C Hamano
2022-08-09 18:54               ` [PATCH v8 12/14] merge: use the "octopus" " Alban Gruin
2022-08-09 18:54               ` [PATCH v8 13/14] sequencer: use the "resolve" " Alban Gruin
2022-08-09 18:54               ` [PATCH v8 14/14] sequencer: use the "octopus" " Alban Gruin
2022-11-18 11:18               ` [PATCH v9 00/12] merge-index: prepare to rewrite merge drivers in C Ævar Arnfjörð Bjarmason
2022-11-18 11:18                 ` [PATCH v9 01/12] merge-index doc & -h: fix padding, labels and "()" use Ævar Arnfjörð Bjarmason
2022-11-18 11:18                 ` [PATCH v9 02/12] t6060: modify multiple files to expose a possible issue with merge-index Ævar Arnfjörð Bjarmason
2022-11-18 11:18                 ` [PATCH v9 03/12] t6060: add tests for removed files Ævar Arnfjörð Bjarmason
2022-11-18 11:18                 ` [PATCH v9 04/12] merge-index tests: add usage tests Ævar Arnfjörð Bjarmason
2022-11-18 11:18                 ` [PATCH v9 05/12] merge-index: migrate to parse_options() API Ævar Arnfjörð Bjarmason
2022-11-18 11:18                 ` [PATCH v9 06/12] merge-index: improve die() error messages Ævar Arnfjörð Bjarmason
2022-11-18 11:18                 ` [PATCH v9 07/12] merge-index i18n: mark die() messages for translation Ævar Arnfjörð Bjarmason
2022-11-18 11:18                 ` [PATCH v9 08/12] merge-index: stop calling ensure_full_index() twice Ævar Arnfjörð Bjarmason
2022-11-18 11:18                 ` [PATCH v9 09/12] builtin/merge-index.c: don't USE_THE_INDEX_COMPATIBILITY_MACROS Ævar Arnfjörð Bjarmason
2022-11-18 11:18                 ` [PATCH v9 10/12] merge-index: libify merge_one_path() and merge_all() Ævar Arnfjörð Bjarmason
2022-11-18 11:18                 ` [PATCH v9 11/12] merge-index: use "struct strvec" and helper to prepare args Ævar Arnfjörð Bjarmason
2022-11-18 11:18                 ` [PATCH v9 12/12] merge-index: make the argument parsing sensible & simpler Ævar Arnfjörð Bjarmason
2022-11-18 23:30                 ` [PATCH v9 00/12] merge-index: prepare to rewrite merge drivers in C Taylor Blau
2022-11-19 12:46                   ` Ævar Arnfjörð Bjarmason
2022-12-15  8:52                 ` [PATCH v10 " Ævar Arnfjörð Bjarmason
2022-12-15  8:52                   ` [PATCH v10 01/12] merge-index doc & -h: fix padding, labels and "()" use Ævar Arnfjörð Bjarmason
2022-12-15  8:52                   ` [PATCH v10 02/12] t6060: modify multiple files to expose a possible issue with merge-index Ævar Arnfjörð Bjarmason
2022-12-15  8:52                   ` [PATCH v10 03/12] t6060: add tests for removed files Ævar Arnfjörð Bjarmason
2022-12-15  8:52                   ` [PATCH v10 04/12] merge-index tests: add usage tests Ævar Arnfjörð Bjarmason
2022-12-15  8:52                   ` [PATCH v10 05/12] merge-index: migrate to parse_options() API Ævar Arnfjörð Bjarmason
2022-12-15  8:52                   ` [PATCH v10 06/12] merge-index: improve die() error messages Ævar Arnfjörð Bjarmason
2022-12-15  8:52                   ` [PATCH v10 07/12] merge-index i18n: mark die() messages for translation Ævar Arnfjörð Bjarmason
2022-12-15  8:52                   ` [PATCH v10 08/12] merge-index: stop calling ensure_full_index() twice Ævar Arnfjörð Bjarmason
2022-12-15  8:52                   ` [PATCH v10 09/12] builtin/merge-index.c: don't USE_THE_INDEX_VARIABLE Ævar Arnfjörð Bjarmason
2022-12-15  8:52                   ` [PATCH v10 10/12] merge-index: libify merge_one_path() and merge_all() Ævar Arnfjörð Bjarmason
2022-12-15  8:52                   ` [PATCH v10 11/12] merge-index: use "struct strvec" and helper to prepare args Ævar Arnfjörð Bjarmason
2022-12-15  8:52                   ` [PATCH v10 12/12] merge-index: make the argument parsing sensible & simpler Ævar Arnfjörð Bjarmason

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