--- a/hgext/patchbomb.py
+++ b/hgext/patchbomb.py
@@ -380,6 +380,7 @@ def patchbomb(ui, repo, *revs, **opts):
if bcc: m['Bcc'] = ', '.join(bcc)
if opts['test']:
ui.status('Displaying ', m['Subject'], ' ...\n')
+ ui.flush()
fp = os.popen(os.getenv('PAGER', 'more'), 'w')
try:
fp.write(m.as_string(0))