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prevent panic when empty flag

Docker-DCO-1.1-Signed-off-by: Victor Vieux <vieux@docker.com> (github: vieux)

Victor Vieux authored on 2014/06/18 05:45:57
Showing 1 changed files

pkg/mflag/flag.go index 2cfef33..ad23e54 100644

@@ -778,6 +778,9 @@ func (f *FlagSet) usage() {
 }
 
 func trimQuotes(str string) string {
+	if len(str) == 0 {
+		return str
+	}
 	type quote struct {
 		start, end byte
 	}

...	...	@@ -778,6 +778,9 @@ func (f *FlagSet) usage() {
778	778	}
779	779
780	780	func trimQuotes(str string) string {
	781	+ if len(str) == 0 {
	782	+ return str
	783	+ }
781	784	type quote struct {
782	785	start, end byte
783	786	}