sub: add --sub-text-bold option

This was basically requested.

1 files changed, 1 insertions, 0 deletions

diff --git a/sub/osd.h b/sub/osd.h
index f67b6a5f14..1444fd6f8c 100644
--- a/sub/osd.h
+++ b/sub/osd.h
@@ -135,6 +135,7 @@ struct osd_style_opts {
     int align_x;
     int align_y;
     float blur;
+    int bold;
 };
 
 extern const struct m_sub_options osd_style_conf;