fix(comp): Disable file comp for output formats

It does not make sense to suggest files to the user as output formats.

Signed-off-by: Marc Khouzam <marc.khouzam@montreal.ca>

cmd/helm/flags.go

@@ -69,7 +69,7 @@ func bindOutputFlag(cmd *cobra.Command, varRef *output.Format) {
 				formatNames = append(formatNames, format)
 			}
 		}
-		return formatNames, cobra.ShellCompDirectiveDefault
+		return formatNames, cobra.ShellCompDirectiveNoFileComp
 	})
 
 	if err != nil {

cmd/helm/testdata/output/output-comp.txt

@@ -1,5 +1,5 @@
 table
 json
 yaml
-:0
-Completion ended with directive: ShellCompDirectiveDefault
+:4
+Completion ended with directive: ShellCompDirectiveNoFileComp