decoder.go

tao~/dev/caliopen/go/src/github.com/emersion/go-vcard(master|✚1) % git diff
diff --git a/decoder.go b/decoder.go
index 1d2153d..37356b9 100644
--- a/decoder.go
+++ b/decoder.go
@@ -108,14 +108,19 @@ func parseLine(l string) (key string, field *Field, err error) {
        if err != nil {
                return
        }
-
        if hasParams {
-               field.Params, l, err = parseParams(l)
+               i := strings.IndexAny(l, "=")
+               if i >= 0 {
+                       field.Params, l, err = parseParams(l)
+               } else {
+                       // Surely v2.1 parameter syntax
+                       i = strings.IndexAny(l, ":")
+                       l = l[i+1:]
+               }
                if err != nil {
                        return
                }
        }
-
        field.Value = parseValue(l)
        return
 }

INFO[0000] Found 4 vcards
INFO[0000] Vcard wit fn Emma
INFO[0000] Got contact emma@tomme.de.savoie

I parse correctly this

begin:vcard
fn:Emma
email;internet:Emma@tomme.de.savoie
version:2.1
end:vcard