difftool: don't assume that default sh is sane

diff --git a/transport-helper.c b/transport-helper.c
index e91bc9af8912be582fd16fcfa06afc4fb3dc9e9e..b9ba0416b24fb2d53b410b3b97424e9efd552b43 100644 (file)
--- a/transport-helper.c
+++ b/transport-helper.c
@@ -195,15 +195,9 @@ static struct child_process *get_helper(struct transport *transport)
                } else if (!strcmp(capname, "signed-tags")) {
                        data->signed_tags = 1;
                } else if (starts_with(capname, "export-marks ")) {
-                       struct strbuf arg = STRBUF_INIT;
-                       strbuf_addstr(&arg, "--export-marks=");
-                       strbuf_addstr(&arg, capname + strlen("export-marks "));
-                       data->export_marks = strbuf_detach(&arg, NULL);
+                       data->export_marks = xstrdup(capname + strlen("export-marks "));
                } else if (starts_with(capname, "import-marks")) {
-                       struct strbuf arg = STRBUF_INIT;
-                       strbuf_addstr(&arg, "--import-marks=");
-                       strbuf_addstr(&arg, capname + strlen("import-marks "));
-                       data->import_marks = strbuf_detach(&arg, NULL);
+                       data->import_marks = xstrdup(capname + strlen("import-marks "));
                } else if (starts_with(capname, "no-private-update")) {
                        data->no_private_update = 1;
                } else if (mandatory) {
@@ -428,6 +422,8 @@ static int get_exporter(struct transport *transport,
        struct helper_data *data = transport->data;
        struct child_process *helper = get_helper(transport);
        int argc = 0, i;
+       struct strbuf tmp = STRBUF_INIT;
+
        memset(fastexport, 0, sizeof(*fastexport));
 
        /* we need to duplicate helper->in because we want to use it after
@@ -438,10 +434,14 @@ static int get_exporter(struct transport *transport,
        fastexport->argv[argc++] = "--use-done-feature";
        fastexport->argv[argc++] = data->signed_tags ?
                "--signed-tags=verbatim" : "--signed-tags=warn-strip";
-       if (data->export_marks)
-               fastexport->argv[argc++] = data->export_marks;
-       if (data->import_marks)
-               fastexport->argv[argc++] = data->import_marks;
+       if (data->export_marks) {
+               strbuf_addf(&tmp, "--export-marks=%s.tmp", data->export_marks);
+               fastexport->argv[argc++] = strbuf_detach(&tmp, NULL);
+       }
+       if (data->import_marks) {
+               strbuf_addf(&tmp, "--import-marks=%s", data->import_marks);
+               fastexport->argv[argc++] = strbuf_detach(&tmp, NULL);
+       }
 
        for (i = 0; i < revlist_args->nr; i++)
                fastexport->argv[argc++] = revlist_args->items[i].string;
@@ -911,7 +911,16 @@ static int push_refs_with_export(struct transport *transport,
 
        if (finish_command(&exporter))
                die("Error while running fast-export");
-       return push_update_refs_status(data, remote_refs, flags);
+       if (push_update_refs_status(data, remote_refs, flags))
+               return 1;
+
+       if (data->export_marks) {
+               strbuf_addf(&buf, "%s.tmp", data->export_marks);
+               rename(buf.buf, data->export_marks);
+               strbuf_release(&buf);
+       }
+
+       return 0;
 }
 
 static int push_refs(struct transport *transport,
@@ -1017,7 +1026,7 @@ static struct ref *get_refs_list(struct transport *transport, int for_push)
 
 int transport_helper_init(struct transport *transport, const char *name)
 {
-       struct helper_data *data = xcalloc(sizeof(*data), 1);
+       struct helper_data *data = xcalloc(1, sizeof(*data));
        data->name = name;
 
        if (getenv("GIT_TRANSPORT_HELPER_DEBUG"))