branch: let delete_branches warn instead of error on bulk refusal

Add a warn_only flag to delete_branches() and check_branch_commit()
so a bulk caller can report not-fully-merged branches as one-line
warnings and continue, instead of erroring with the four-line "use
'git branch -D'" advice that the standalone "git branch -d" path
emits.  Default callers pass 0 and are unaffected.

Signed-off-by: Harald Nordgren <haraldnordgren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/branch.c b/builtin/branch.c
index 2d34ad34dc08cff48c32d4dbd969f7dc3dfd33c5..96f6ae6dec41f9efa90660eba5898893e3a7d092 100644 (file)
--- a/builtin/branch.c
+++ b/builtin/branch.c
@@ -193,7 +193,7 @@ static int branch_merged(int kind, const char *name,
 
 static int check_branch_commit(const char *branchname, const char *refname,
                               const struct object_id *oid, struct commit *head_rev,
-                              int kinds, int force)
+                              int kinds, int force, int warn_only)
 {
        struct commit *rev = lookup_commit_reference(the_repository, oid);
        if (!force && !rev) {
@@ -201,10 +201,16 @@ static int check_branch_commit(const char *branchname, const char *refname,
                return -1;
        }
        if (!force && !branch_merged(kinds, branchname, rev, head_rev)) {
-               error(_("the branch '%s' is not fully merged"), branchname);
-               advise_if_enabled(ADVICE_FORCE_DELETE_BRANCH,
-                                 _("If you are sure you want to delete it, "
-                                 "run 'git branch -D %s'"), branchname);
+               if (warn_only) {
+                       warning(_("the branch '%s' is not fully merged"),
+                               branchname);
+               } else {
+                       error(_("the branch '%s' is not fully merged"),
+                             branchname);
+                       advise_if_enabled(ADVICE_FORCE_DELETE_BRANCH,
+                                         _("If you are sure you want to delete it, "
+                                         "run 'git branch -D %s'"), branchname);
+               }
                return -1;
        }
        return 0;
@@ -220,7 +226,7 @@ static void delete_branch_config(const char *branchname)
 }
 
 static int delete_branches(int argc, const char **argv, int force, int kinds,
-                          int quiet)
+                          int quiet, int warn_only)
 {
        struct commit *head_rev = NULL;
        struct object_id oid;
@@ -310,8 +316,9 @@ static int delete_branches(int argc, const char **argv, int force, int kinds,
 
                if (!(flags & (REF_ISSYMREF|REF_ISBROKEN)) &&
                    check_branch_commit(bname.buf, name, &oid, head_rev, kinds,
-                                       force)) {
-                       ret = 1;
+                                       force, warn_only)) {
+                       if (!warn_only)
+                               ret = 1;
                        goto next;
                }
 
@@ -1019,7 +1026,8 @@ int cmd_branch(int argc,
        if (delete) {
                if (!argc)
                        die(_("branch name required"));
-               ret = delete_branches(argc, argv, delete > 1, filter.kind, quiet);
+               ret = delete_branches(argc, argv, delete > 1, filter.kind,
+                                     quiet, 0);
                goto out;
        } else if (forked) {
                ret = list_forked_branches(argc, argv);