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-rw-r--r--Documentation/git-format-patch.txt5
-rw-r--r--builtin/log.c2
-rw-r--r--builtin/rebase.c29
-rw-r--r--log-tree.c2
-rw-r--r--range-diff.c6
-rw-r--r--range-diff.h5
-rwxr-xr-xt/t3406-rebase-message.sh26
7 files changed, 69 insertions, 6 deletions
diff --git a/Documentation/git-format-patch.txt b/Documentation/git-format-patch.txt
index aba4c5febe..27304428a1 100644
--- a/Documentation/git-format-patch.txt
+++ b/Documentation/git-format-patch.txt
@@ -250,6 +250,11 @@ feeding the result to `git send-email`.
feature/v2`), or a revision range if the two versions of the series are
disjoint (for example `git format-patch --cover-letter
--range-diff=feature/v1~3..feature/v1 -3 feature/v2`).
++
+Note that diff options passed to the command affect how the primary
+product of `format-patch` is generated, and they are not passed to
+the underlying `range-diff` machinery used to generate the cover-letter
+material (this may change in the future).
--creation-factor=<percent>::
Used with `--range-diff`, tweak the heuristic which matches up commits
diff --git a/builtin/log.c b/builtin/log.c
index 0fe6f9ba1e..5ac18e2848 100644
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -1096,7 +1096,7 @@ static void make_cover_letter(struct rev_info *rev, int use_stdout,
if (rev->rdiff1) {
fprintf_ln(rev->diffopt.file, "%s", rev->rdiff_title);
show_range_diff(rev->rdiff1, rev->rdiff2,
- rev->creation_factor, 1, &rev->diffopt);
+ rev->creation_factor, 1, NULL);
}
}
diff --git a/builtin/rebase.c b/builtin/rebase.c
index 1c6f817f4b..c87da417fb 100644
--- a/builtin/rebase.c
+++ b/builtin/rebase.c
@@ -776,6 +776,23 @@ static void NORETURN error_on_missing_default_upstream(void)
exit(1);
}
+static void set_reflog_action(struct rebase_options *options)
+{
+ const char *env;
+ struct strbuf buf = STRBUF_INIT;
+
+ if (!is_interactive(options))
+ return;
+
+ env = getenv(GIT_REFLOG_ACTION_ENVIRONMENT);
+ if (env && strcmp("rebase", env))
+ return; /* only override it if it is "rebase" */
+
+ strbuf_addf(&buf, "rebase -i (%s)", options->action);
+ setenv(GIT_REFLOG_ACTION_ENVIRONMENT, buf.buf, 1);
+ strbuf_release(&buf);
+}
+
int cmd_rebase(int argc, const char **argv, const char *prefix)
{
struct rebase_options options = {
@@ -978,6 +995,7 @@ int cmd_rebase(int argc, const char **argv, const char *prefix)
if (action != NO_ACTION && !in_progress)
die(_("No rebase in progress?"));
+ setenv(GIT_REFLOG_ACTION_ENVIRONMENT, "rebase", 0);
if (action == ACTION_EDIT_TODO && !is_interactive(&options))
die(_("The --edit-todo action can only be used during "
@@ -990,6 +1008,7 @@ int cmd_rebase(int argc, const char **argv, const char *prefix)
int fd;
options.action = "continue";
+ set_reflog_action(&options);
/* Sanity check */
if (get_oid("HEAD", &head))
@@ -1018,6 +1037,7 @@ int cmd_rebase(int argc, const char **argv, const char *prefix)
struct string_list merge_rr = STRING_LIST_INIT_DUP;
options.action = "skip";
+ set_reflog_action(&options);
rerere_clear(&merge_rr);
string_list_clear(&merge_rr, 1);
@@ -1033,6 +1053,7 @@ int cmd_rebase(int argc, const char **argv, const char *prefix)
case ACTION_ABORT: {
struct string_list merge_rr = STRING_LIST_INIT_DUP;
options.action = "abort";
+ set_reflog_action(&options);
rerere_clear(&merge_rr);
string_list_clear(&merge_rr, 1);
@@ -1440,11 +1461,12 @@ int cmd_rebase(int argc, const char **argv, const char *prefix)
}
strbuf_reset(&buf);
- strbuf_addf(&buf, "rebase: checkout %s",
+ strbuf_addf(&buf, "%s: checkout %s",
+ getenv(GIT_REFLOG_ACTION_ENVIRONMENT),
options.switch_to);
if (reset_head(&oid, "checkout",
options.head_name, 0,
- NULL, NULL) < 0) {
+ NULL, buf.buf) < 0) {
ret = !!error(_("could not switch to "
"%s"),
options.switch_to);
@@ -1514,7 +1536,8 @@ int cmd_rebase(int argc, const char **argv, const char *prefix)
printf(_("First, rewinding head to replay your work on top of "
"it...\n"));
- strbuf_addf(&msg, "rebase: checkout %s", options.onto_name);
+ strbuf_addf(&msg, "%s: checkout %s",
+ getenv(GIT_REFLOG_ACTION_ENVIRONMENT), options.onto_name);
if (reset_head(&options.onto->object.oid, "checkout", NULL,
RESET_HEAD_DETACH, NULL, msg.buf))
die(_("Could not detach HEAD"));
diff --git a/log-tree.c b/log-tree.c
index 7a83e99250..b243779a0b 100644
--- a/log-tree.c
+++ b/log-tree.c
@@ -762,7 +762,7 @@ void show_log(struct rev_info *opt)
next_commentary_block(opt, NULL);
fprintf_ln(opt->diffopt.file, "%s", opt->rdiff_title);
show_range_diff(opt->rdiff1, opt->rdiff2,
- opt->creation_factor, 1, &opt->diffopt);
+ opt->creation_factor, 1, NULL);
memcpy(&diff_queued_diff, &dq, sizeof(diff_queued_diff));
}
diff --git a/range-diff.c b/range-diff.c
index 767af8c5bb..48b0e1b4ce 100644
--- a/range-diff.c
+++ b/range-diff.c
@@ -460,7 +460,11 @@ int show_range_diff(const char *range1, const char *range2,
struct diff_options opts;
struct strbuf indent = STRBUF_INIT;
- memcpy(&opts, diffopt, sizeof(opts));
+ if (diffopt)
+ memcpy(&opts, diffopt, sizeof(opts));
+ else
+ diff_setup(&opts);
+
if (!opts.output_format)
opts.output_format = DIFF_FORMAT_PATCH;
opts.flags.suppress_diff_headers = 1;
diff --git a/range-diff.h b/range-diff.h
index 190593f0c7..08a50b6e98 100644
--- a/range-diff.h
+++ b/range-diff.h
@@ -5,6 +5,11 @@
#define RANGE_DIFF_CREATION_FACTOR_DEFAULT 60
+/*
+ * Compare series of commmits in RANGE1 and RANGE2, and emit to the
+ * standard output. NULL can be passed to DIFFOPT to use the built-in
+ * default.
+ */
int show_range_diff(const char *range1, const char *range2,
int creation_factor, int dual_color,
struct diff_options *diffopt);
diff --git a/t/t3406-rebase-message.sh b/t/t3406-rebase-message.sh
index c2c9950568..f64b130cb8 100755
--- a/t/t3406-rebase-message.sh
+++ b/t/t3406-rebase-message.sh
@@ -91,6 +91,32 @@ test_expect_success 'error out early upon -C<n> or --whitespace=<bad>' '
test_i18ngrep "Invalid whitespace option" err
'
+test_expect_success 'GIT_REFLOG_ACTION' '
+ git checkout start &&
+ test_commit reflog-onto &&
+ git checkout -b reflog-topic start &&
+ test_commit reflog-to-rebase &&
+
+ git rebase reflog-onto &&
+ git log -g --format=%gs -3 >actual &&
+ cat >expect <<-\EOF &&
+ rebase finished: returning to refs/heads/reflog-topic
+ rebase: reflog-to-rebase
+ rebase: checkout reflog-onto
+ EOF
+ test_cmp expect actual &&
+
+ git checkout -b reflog-prefix reflog-to-rebase &&
+ GIT_REFLOG_ACTION=change-the-reflog git rebase reflog-onto &&
+ git log -g --format=%gs -3 >actual &&
+ cat >expect <<-\EOF &&
+ rebase finished: returning to refs/heads/reflog-prefix
+ change-the-reflog: reflog-to-rebase
+ change-the-reflog: checkout reflog-onto
+ EOF
+ test_cmp expect actual
+'
+
test_expect_success 'rebase -i onto unrelated history' '
git init unrelated &&
test_commit -C unrelated 1 &&