Now handling ssa styles with leading * in events

ssa.go

@@ -1056,10 +1056,12 @@ func (e *ssaEvent) item(styles map[string]*Style) (i *Item, err error) {
 
 	// Set style
 	if len(e.style) > 0 {
-		var ok bool
-		if i.Style, ok = styles[e.style]; !ok {
-			err = fmt.Errorf("astisub: style %s not found", e.style)
-			return
+		// Sometimes there's an "*" before the style name (e.g. with ffmpeg)
+		for _, name := range []string{e.style, strings.TrimPrefix(e.style, "*")} {
+			if s, ok := styles[name]; ok {
+				i.Style = s
+				break
+			}
 		}
 	}
 

testdata/example-in.ssa

@@ -25,7 +25,7 @@ Style: 3,f3,6,&H00B4FCFC,&H00B4FCFC,&H00000008,&H00000008,0,0,9,3,6,9,3,6,9,0.3,
 Format: Marked, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
 Dialogue: Marked=0,0:01:39.00,0:01:41.04,1,Cher,1234,2345,3456,test,{\pos(400,570)}(deep rumbling)
 Dialogue: Marked=1,0:02:04.08,0:02:07.12,2,autre,0000,0000,0000,,MAN:\nHow did we end up here?
-Dialogue: Marked=1,0:02:12.16,0:02:15.20,3,autre,0000,0000,0000,,This place is horrible.
+Dialogue: Marked=1,0:02:12.16,0:02:15.20,*3,autre,0000,0000,0000,,This place is horrible.
 Not understood line
 Dialogue: Marked=1,0:02:20.24,0:02:22.28,1,autre,0000,0000,0000,,Smells like balls.
 Dialogue: Marked=1,0:02:28.32,0:02:31.36,2,autre,0000,0000,0000,,We don't belong\nin this shithole.