[v3,4/5] format-patch: teach --no-base
diff mbox series

Message ID 6cba51ca247423c76bda498152c162900aba1b59.1575445583.git.liu.denton@gmail.com
State New
Headers show
Series
  • rebase: fix breakage with `format.useAutoBase`
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Commit Message

Denton Liu Dec. 4, 2019, 7:47 a.m. UTC
If `format.useAutoBase = true`, there was no way to override this from
the command-line. Teach format-patch the `--no-base` option which
overrides `format.useAutoBase`.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
---
 Documentation/git-format-patch.txt |  5 +++--
 builtin/log.c                      | 22 ++++++++++++++++++++--
 t/t4014-format-patch.sh            |  6 ++++++
 3 files changed, 29 insertions(+), 4 deletions(-)

Comments

René Scharfe Dec. 4, 2019, 10:36 a.m. UTC | #1
Am 04.12.19 um 08:47 schrieb Denton Liu:
> If `format.useAutoBase = true`, there was no way to override this from
> the command-line. Teach format-patch the `--no-base` option which
> overrides `format.useAutoBase`.

> diff --git a/builtin/log.c b/builtin/log.c
> index 9c44682f61..645d6db7cc 100644
> --- a/builtin/log.c
> +++ b/builtin/log.c
> @@ -1388,6 +1388,23 @@ static int from_callback(const struct option *opt, const char *arg, int unset)
>  	return 0;
>  }
>
> +static int base_callback(const struct option *opt, const char *arg, int unset)
> +{
> +	char **base_commit = opt->value;
> +
> +	free(*base_commit);
> +
> +	if (unset) {
> +		base_auto = 0;
> +		*base_commit = NULL;
> +	} else if (arg) {
> +		*base_commit = xstrdup(arg);
> +	} else {
> +		BUG("arg is NULL");
> +	}
> +	return 0;
> +}
> +
>  struct base_tree_info {
>  	struct object_id base_commit;
>  	int nr_patch_id, alloc_patch_id;
> @@ -1676,8 +1693,9 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
>  			    PARSE_OPT_OPTARG, thread_callback },
>  		OPT_STRING(0, "signature", &signature, N_("signature"),
>  			    N_("add a signature")),
> -		OPT_STRING(0, "base", &base_commit, N_("base-commit"),
> -			   N_("add prerequisite tree info to the patch series")),
> +		{ OPTION_CALLBACK, 0, "base", &base_commit, N_("base-commit"),
> +			   N_("add prerequisite tree info to the patch series"),
> +			   0, base_callback },
>  		OPT_FILENAME(0, "signature-file", &signature_file,
>  				N_("add a signature from a file")),
>  		OPT__QUIET(&quiet, N_("don't print the patch filenames")),

Clearing the global variable base_auto feels unclean to me, as does the
introduction of a callback for that purpose.  Why not set base_commit
after reading the config and before parsing command line options to
reflect base_auto?  That would achieve the intended precedence in a
simpler way, something like this:

diff --git a/builtin/log.c b/builtin/log.c
index a26f223ab4..af1b0d0209 100644
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -1714,6 +1714,8 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
 		rev.mime_boundary = default_attach;
 		rev.no_inline = 1;
 	}
+	if (base_auto)
+		base_commit = "auto";

 	/*
 	 * Parse the arguments before setup_revisions(), or something
@@ -1973,7 +1975,7 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
 	}

 	memset(&bases, 0, sizeof(bases));
-	if (base_commit || base_auto) {
+	if (base_commit) {
 		struct commit *base = get_base_commit(base_commit, list, nr);
 		reset_revision_walk();
 		clear_object_flags(UNINTERESTING);
Junio C Hamano Dec. 4, 2019, 5:26 p.m. UTC | #2
René Scharfe <l.s.r@web.de> writes:

> Clearing the global variable base_auto feels unclean to me, as does the
> introduction of a callback for that purpose.  Why not set base_commit
> after reading the config and before parsing command line options to
> reflect base_auto?  That would achieve the intended precedence in a
> simpler way, something like this:

Nice.


>
> diff --git a/builtin/log.c b/builtin/log.c
> index a26f223ab4..af1b0d0209 100644
> --- a/builtin/log.c
> +++ b/builtin/log.c
> @@ -1714,6 +1714,8 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
>  		rev.mime_boundary = default_attach;
>  		rev.no_inline = 1;
>  	}
> +	if (base_auto)
> +		base_commit = "auto";
>
>  	/*
>  	 * Parse the arguments before setup_revisions(), or something
> @@ -1973,7 +1975,7 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
>  	}
>
>  	memset(&bases, 0, sizeof(bases));
> -	if (base_commit || base_auto) {
> +	if (base_commit) {
>  		struct commit *base = get_base_commit(base_commit, list, nr);
>  		reset_revision_walk();
>  		clear_object_flags(UNINTERESTING);

Patch
diff mbox series

diff --git a/Documentation/git-format-patch.txt b/Documentation/git-format-patch.txt
index 00bdf9b125..0d4f8951bb 100644
--- a/Documentation/git-format-patch.txt
+++ b/Documentation/git-format-patch.txt
@@ -333,11 +333,12 @@  you can use `--suffix=-patch` to get `0001-description-of-my-change-patch`.
   Output an all-zero hash in each patch's From header instead
   of the hash of the commit.
 
---base=<commit>::
+--[no-]base[=<commit>]::
 	Record the base tree information to identify the state the
 	patch series applies to.  See the BASE TREE INFORMATION section
 	below for details. If <commit> is "auto", a base commit is
-	automatically chosen.
+	automatically chosen. The `--no-base` option overrides a
+	`format.useAutoBase` configuration.
 
 --root::
 	Treat the revision argument as a <revision range>, even if it
diff --git a/builtin/log.c b/builtin/log.c
index 9c44682f61..645d6db7cc 100644
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -1388,6 +1388,23 @@  static int from_callback(const struct option *opt, const char *arg, int unset)
 	return 0;
 }
 
+static int base_callback(const struct option *opt, const char *arg, int unset)
+{
+	char **base_commit = opt->value;
+
+	free(*base_commit);
+
+	if (unset) {
+		base_auto = 0;
+		*base_commit = NULL;
+	} else if (arg) {
+		*base_commit = xstrdup(arg);
+	} else {
+		BUG("arg is NULL");
+	}
+	return 0;
+}
+
 struct base_tree_info {
 	struct object_id base_commit;
 	int nr_patch_id, alloc_patch_id;
@@ -1676,8 +1693,9 @@  int cmd_format_patch(int argc, const char **argv, const char *prefix)
 			    PARSE_OPT_OPTARG, thread_callback },
 		OPT_STRING(0, "signature", &signature, N_("signature"),
 			    N_("add a signature")),
-		OPT_STRING(0, "base", &base_commit, N_("base-commit"),
-			   N_("add prerequisite tree info to the patch series")),
+		{ OPTION_CALLBACK, 0, "base", &base_commit, N_("base-commit"),
+			   N_("add prerequisite tree info to the patch series"),
+			   0, base_callback },
 		OPT_FILENAME(0, "signature-file", &signature_file,
 				N_("add a signature from a file")),
 		OPT__QUIET(&quiet, N_("don't print the patch filenames")),
diff --git a/t/t4014-format-patch.sh b/t/t4014-format-patch.sh
index c7cc643adf..a5b6302a1c 100755
--- a/t/t4014-format-patch.sh
+++ b/t/t4014-format-patch.sh
@@ -1958,6 +1958,12 @@  test_expect_success 'format-patch --base overrides format.useAutoBase' '
 	test_cmp expect actual
 '
 
+test_expect_success 'format-patch --no-base overrides format.useAutoBase' '
+	test_config format.useAutoBase true &&
+	git format-patch --stdout --no-base -1 >patch &&
+	! grep "^base-commit:" patch
+'
+
 test_expect_success 'format-patch --base with --attach' '
 	git format-patch --attach=mimemime --stdout --base=HEAD~ -1 >patch &&
 	sed -n -e "/^base-commit:/s/.*/1/p" -e "/^---*mimemime--$/s/.*/2/p" \