Add multiflag support for new flag implementation

In the parent of this commit, I've added a new flag implementation to
support config using env vars or a config file. This commits add support
for multiflag value setting, when using a csv like structure for those
values.

This was needed as for those only the first value was being read.

1 files changed, 9 insertions, 0 deletions

diff --git a/multi_string_flag.go b/multi_string_flag.go
index ba6d92ea..25e9b9fe 100644
--- a/multi_string_flag.go
+++ b/multi_string_flag.go
@@ -20,3 +20,12 @@ func (s *MultiStringFlag) Set(value string) error {
 	*s = append(*s, value)
 	return nil
 }
+
+// Split each flag
+func (s *MultiStringFlag) Split() (result []string) {
+	for _, str := range *s {
+		result = append(result, strings.Split(str, ",")...)
+	}
+
+	return
+}