rebase: add rebase.updateRefs config option

The previous change added the --update-refs command-line option.  For
users who always want this mode, create the rebase.updateRefs config
option which behaves the same way as rebase.autoSquash does with the
--autosquash option.

Signed-off-by: Derrick Stolee <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: derrickstolee

Documentation/config/rebase.txt

@@ -21,6 +21,9 @@ rebase.autoStash::
 	`--autostash` options of linkgit:git-rebase[1].
 	Defaults to false.
 
+rebase.updateRefs::
+	If set to true enable `--update-refs` option by default.
+
 rebase.missingCommitsCheck::
 	If set to "warn", git rebase -i will print a warning if some
 	commits are removed (e.g. a line was deleted), however the

Documentation/git-rebase.txt

@@ -615,6 +615,10 @@ start would be overridden by the presence of
 	are being rebased. Any branches that are checked out in a worktree
 	or point to a `squash! ...` or `fixup! ...` commit are not updated
 	in this way.
++
+If the `--update-refs` option is enabled by default using the
+configuration variable `rebase.updateRefs`, this option can be
+used to override and disable this setting.
 
 INCOMPATIBLE OPTIONS
 --------------------

builtin/rebase.c

@@ -802,6 +802,11 @@ static int rebase_config(const char *var, const char *value, void *data)
 		return 0;
 	}
 
+	if (!strcmp(var, "rebase.updaterefs")) {
+		opts->update_refs = git_config_bool(var, value);
+		return 0;
+	}
+
 	if (!strcmp(var, "rebase.reschedulefailedexec")) {
 		opts->reschedule_failed_exec = git_config_bool(var, value);
 		return 0;

t/t3404-rebase-interactive.sh

@@ -1768,6 +1768,11 @@ test_expect_success '--update-refs adds git branch commands' '
 		exec git update-ref refs/heads/no-conflict-branch HEAD $(git rev-parse M)
 		EOF
 
+		test_cmp expect todo &&
+
+		test_must_fail git -c rebase.autosquash=true \
+				   -c rebase.updaterefs=true \
+				   rebase -i primary >todo &&
 		test_cmp expect todo
 	)
 '