clone: recursive and reference option triggers submodule alternates

diff --git a/builtin/clone.c b/builtin/clone.c
index 01826651f9cc283f47fba713cea8999bd7b67462..404c5e80226c81a8f051e63fa8e40286fea95a18 100644 (file)
--- a/builtin/clone.c
+++ b/builtin/clone.c
@@ -947,6 +947,25 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
                else
                        fprintf(stderr, _("Cloning into '%s'...\n"), dir);
        }
+
+       if (option_recursive) {
+               if (option_required_reference.nr &&
+                   option_optional_reference.nr)
+                       die(_("clone --recursive is not compatible with "
+                             "both --reference and --reference-if-able"));
+               else if (option_required_reference.nr) {
+                       string_list_append(&option_config,
+                               "submodule.alternateLocation=superproject");
+                       string_list_append(&option_config,
+                               "submodule.alternateErrorStrategy=die");
+               } else if (option_optional_reference.nr) {
+                       string_list_append(&option_config,
+                               "submodule.alternateLocation=superproject");
+                       string_list_append(&option_config,
+                               "submodule.alternateErrorStrategy=info");
+               }
+       }
+
        init_db(option_template, INIT_DB_QUIET);
        write_config(&option_config);