[PATCH v3 2/7] rebase: flag --apply and --merge as incompatible

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From: Elijah Newren <newren@xxxxxxxxx>

Previously, we flagged options which implied --apply as being
incompatible with options which implied --merge.  But if both options
were given explicitly, then we didn't flag the incompatibility.  The
same is true with --apply and --interactive.  Add the check, and add
some testcases to verify these are also caught.

Signed-off-by: Elijah Newren <newren@xxxxxxxxx>
---
 builtin/rebase.c                       | 12 ++++++++++--
 t/t3422-rebase-incompatible-options.sh |  3 +++
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/builtin/rebase.c b/builtin/rebase.c
index accd62fce48..2a5e0e8a7a0 100644
--- a/builtin/rebase.c
+++ b/builtin/rebase.c
@@ -920,6 +920,9 @@ static int parse_opt_am(const struct option *opt, const char *arg, int unset)
 	BUG_ON_OPT_NEG(unset);
 	BUG_ON_OPT_ARG(arg);
 
+	if (opts->type != REBASE_UNSPECIFIED && opts->type != REBASE_APPLY)
+	    die(_("apply options and merge options cannot be used together"));
+
 	opts->type = REBASE_APPLY;
 
 	return 0;
@@ -933,8 +936,10 @@ static int parse_opt_merge(const struct option *opt, const char *arg, int unset)
 	BUG_ON_OPT_NEG(unset);
 	BUG_ON_OPT_ARG(arg);
 
-	if (!is_merge(opts))
-		opts->type = REBASE_MERGE;
+	if (opts->type != REBASE_UNSPECIFIED && opts->type != REBASE_MERGE)
+	    die(_("apply options and merge options cannot be used together"));
+
+	opts->type = REBASE_MERGE;
 
 	return 0;
 }
@@ -948,6 +953,9 @@ static int parse_opt_interactive(const struct option *opt, const char *arg,
 	BUG_ON_OPT_NEG(unset);
 	BUG_ON_OPT_ARG(arg);
 
+	if (opts->type != REBASE_UNSPECIFIED && opts->type != REBASE_MERGE)
+	    die(_("apply options and merge options cannot be used together"));
+
 	opts->type = REBASE_MERGE;
 	opts->flags |= REBASE_INTERACTIVE_EXPLICIT;
 
diff --git a/t/t3422-rebase-incompatible-options.sh b/t/t3422-rebase-incompatible-options.sh
index 9da39cd91c2..9b9e78479f6 100755
--- a/t/t3422-rebase-incompatible-options.sh
+++ b/t/t3422-rebase-incompatible-options.sh
@@ -67,7 +67,10 @@ test_rebase_am_only () {
 
 }
 
+# Check options which imply --apply
 test_rebase_am_only --whitespace=fix
 test_rebase_am_only -C4
+# Also check an explicit --apply
+test_rebase_am_only --apply
 
 test_done
-- 
gitgitgadget




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