For deep threading mode, i.e., the mode that gives a thread structured
like
+ [PATCH 0/n] Cover letter
`-+ [PATCH 1/n] First patch
`-+ [PATCH 2/n] Second patch
`-+ ...
we currently have to use 'git send-email --thread' (the default). On
the other hand, format-patch also has a --thread option which gives
shallow mode, i.e.,
+ [PATCH 0/n] Cover letter
|-+ [PATCH 1/n] First patch
|-+ [PATCH 2/n] Second patch
...
To reduce the confusion resulting from having two indentically named
features in different tools giving different results, let format-patch
take an optional argument '--thread=deep' that gives the same output
as 'send-mail --thread'. With no argument, or 'shallow', behave as
before. Also add a configuration variable format.thread with the same
semantics.
Signed-off-by: Thomas Rast <trast@xxxxxxxxxxxxxxx>
---
Same as v1.
Documentation/config.txt | 10 +++
Documentation/git-format-patch.txt | 10 +++-
builtin-log.c | 36 +++++++++--
t/t4014-format-patch.sh | 120 ++++++++++++++++++++++++++++++++++++
4 files changed, 170 insertions(+), 6 deletions(-)
diff --git a/Documentation/config.txt b/Documentation/config.txt
index 3117d65..cf835c4 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -690,6 +690,16 @@ format.pretty::
See linkgit:git-log[1], linkgit:git-show[1],
linkgit:git-whatchanged[1].
+format.thread::
+ The default threading style for 'git-format-patch'. Can be
+ either a boolean value, `shallow` or `deep`. 'Shallow'
+ threading makes every mail a reply to the head of the series,
+ where the head is chosen from the cover letter, the
+ `\--in-reply-to`, and the first patch mail, in this order.
+ 'Deep' threading makes every mail a reply to the previous one.
+ A true boolean value is the same as `shallow`, and a false
+ value disables threading.
+
gc.aggressiveWindow::
The window size parameter used in the delta compression
algorithm used by 'git-gc --aggressive'. This defaults
diff --git a/Documentation/git-format-patch.txt b/Documentation/git-format-patch.txt
index e7ae8cf..c14e3ee 100644
--- a/Documentation/git-format-patch.txt
+++ b/Documentation/git-format-patch.txt
@@ -127,10 +127,18 @@ include::diff-options.txt[]
which is the commit message and the patch itself in the
second part, with "Content-Disposition: inline".
---thread::
+--thread[=<style>]::
Add In-Reply-To and References headers to make the second and
subsequent mails appear as replies to the first. Also generates
the Message-Id header to reference.
++
+The optional <style> argument can be either `shallow` or `deep`.
+'Shallow' threading makes every mail a reply to the head of the
+series, where the head is chosen from the cover letter, the
+`\--in-reply-to`, and the first patch mail, in this order. 'Deep'
+threading makes every mail a reply to the previous one. If not
+specified, defaults to the 'format.thread' configuration, or `shallow`
+if that is not set.
--in-reply-to=Message-Id::
Make the first mail (or all the mails with --no-thread) appear as a
diff --git a/builtin-log.c b/builtin-log.c
index 2dc6c48..8684fcd 100644
--- a/builtin-log.c
+++ b/builtin-log.c
@@ -462,6 +462,10 @@ static void add_header(const char *value)
extra_hdr[extra_hdr_nr++] = xstrndup(value, len);
}
+#define THREAD_SHALLOW 1
+#define THREAD_DEEP 2
+static int thread = 0;
+
static int git_format_config(const char *var, const char *value, void *cb)
{
if (!strcmp(var, "format.headers")) {
@@ -498,7 +502,18 @@ static int git_format_config(const char *var, const char *value, void *cb)
default_attach = xstrdup(git_version_string);
return 0;
}
-
+ if (!strcmp(var, "format.thread")) {
+ if (value && !strcasecmp(value, "deep")) {
+ thread = THREAD_DEEP;
+ return 0;
+ }
+ if (value && !strcasecmp(value, "shallow")) {
+ thread = THREAD_SHALLOW;
+ return 0;
+ }
+ thread = git_config_bool(var, value) && THREAD_SHALLOW;
+ return 0;
+ }
return git_log_config(var, value, cb);
}
@@ -777,7 +792,6 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
int numbered_files = 0; /* _just_ numbers */
int subject_prefix = 0;
int ignore_if_in_upstream = 0;
- int thread = 0;
int cover_letter = 0;
int boundary_count = 0;
int no_binary_diff = 0;
@@ -879,8 +893,13 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
}
else if (!strcmp(argv[i], "--ignore-if-in-upstream"))
ignore_if_in_upstream = 1;
- else if (!strcmp(argv[i], "--thread"))
- thread = 1;
+ else if (!strcmp(argv[i], "--thread")
+ || !strcmp(argv[i], "--thread=shallow"))
+ thread = THREAD_SHALLOW;
+ else if (!strcmp(argv[i], "--thread=deep"))
+ thread = THREAD_DEEP;
+ else if (!strcmp(argv[i], "--no-thread"))
+ thread = 0;
else if (!prefixcmp(argv[i], "--in-reply-to="))
in_reply_to = argv[i] + 14;
else if (!strcmp(argv[i], "--in-reply-to")) {
@@ -1055,6 +1074,12 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
/* Have we already had a message ID? */
if (rev.message_id) {
/*
+ * For deep threading: make every mail
+ * a reply to the previous one, no
+ * matter what other options are set.
+ *
+ * For shallow threading:
+ *
* Without --cover-letter and
* --in-reply-to, make every mail a
* reply to the one before.
@@ -1069,7 +1094,8 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
* letter is a reply to the
* --in-reply-to, if specified.
*/
- if (rev.ref_message_ids->nr > 0
+ if (thread == THREAD_SHALLOW
+ && rev.ref_message_ids->nr > 0
&& (!cover_letter || rev.nr > 1))
free(rev.message_id);
else
diff --git a/t/t4014-format-patch.sh b/t/t4014-format-patch.sh
index 8b970c3..ebfc4a6 100755
--- a/t/t4014-format-patch.sh
+++ b/t/t4014-format-patch.sh
@@ -257,6 +257,126 @@ test_expect_success 'thread cover-letter in-reply-to' '
--in-reply-to="<test.message>" --thread master
'
+test_expect_success 'thread explicit shallow' '
+ check_threading expect.cl-irt --cover-letter \
+ --in-reply-to="<test.message>" --thread=shallow master
+'
+
+cat > expect.deep <<EOF
+---
+Message-Id: <0>
+---
+Message-Id: <1>
+In-Reply-To: <0>
+References: <0>
+---
+Message-Id: <2>
+In-Reply-To: <1>
+References: <0>
+ <1>
+EOF
+
+test_expect_success 'thread deep' '
+ check_threading expect.deep --thread=deep master
+'
+
+cat > expect.deep-irt <<EOF
+---
+Message-Id: <0>
+In-Reply-To: <1>
+References: <1>
+---
+Message-Id: <2>
+In-Reply-To: <0>
+References: <1>
+ <0>
+---
+Message-Id: <3>
+In-Reply-To: <2>
+References: <1>
+ <0>
+ <2>
+EOF
+
+test_expect_success 'thread deep in-reply-to' '
+ check_threading expect.deep-irt --thread=deep \
+ --in-reply-to="<test.message>" master
+'
+
+cat > expect.deep-cl <<EOF
+---
+Message-Id: <0>
+---
+Message-Id: <1>
+In-Reply-To: <0>
+References: <0>
+---
+Message-Id: <2>
+In-Reply-To: <1>
+References: <0>
+ <1>
+---
+Message-Id: <3>
+In-Reply-To: <2>
+References: <0>
+ <1>
+ <2>
+EOF
+
+test_expect_success 'thread deep cover-letter' '
+ check_threading expect.deep-cl --cover-letter --thread=deep master
+'
+
+cat > expect.deep-cl-irt <<EOF
+---
+Message-Id: <0>
+In-Reply-To: <1>
+References: <1>
+---
+Message-Id: <2>
+In-Reply-To: <0>
+References: <1>
+ <0>
+---
+Message-Id: <3>
+In-Reply-To: <2>
+References: <1>
+ <0>
+ <2>
+---
+Message-Id: <4>
+In-Reply-To: <3>
+References: <1>
+ <0>
+ <2>
+ <3>
+EOF
+
+test_expect_success 'thread deep cover-letter in-reply-to' '
+ check_threading expect.deep-cl-irt --cover-letter \
+ --in-reply-to="<test.message>" --thread=deep master
+'
+
+test_expect_success 'thread via config' '
+ git config format.thread true &&
+ check_threading expect.thread master
+'
+
+test_expect_success 'thread deep via config' '
+ git config format.thread deep &&
+ check_threading expect.deep master
+'
+
+test_expect_success 'thread config + override' '
+ git config format.thread deep &&
+ check_threading expect.thread --thread master
+'
+
+test_expect_success 'thread config + --no-thread' '
+ git config format.thread deep &&
+ check_threading expect.no-threading --no-thread master
+'
+
test_expect_success 'excessive subject' '
rm -rf patches/ &&
--
1.6.2.rc1.310.ga3b4a
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