File filter names (windows).

file.go

@@ -85,6 +85,15 @@ func (f FileFilters) apply(o *options) {
 	o.fileFilters = append(o.fileFilters, f...)
 }
 
+// Windows' patterns need a name.
+func (f FileFilters) name() {
+	for i, filter := range f {
+		if filter.Name == "" {
+			f[i].Name = strings.Join(filter.Patterns, " ")
+		}
+	}
+}
+
 // Windows' patterns are case insensitive, don't support character classes or escaping.
 // First we remove character classes, then escaping. Patterns with literal wildcards are invalid (match nothing).
 // The semicolon is a separator, so we replace it with the single character wildcard.

file_windows.go

@@ -363,6 +363,7 @@ func initDirNameExt(filename string, name []uint16) (dir *uint16, ext *uint16) {
 
 func initFilters(filters FileFilters) []uint16 {
 	filters.simplify()
+	filters.name()
 	var res []uint16
 	for _, f := range filters {
 		res = append(res, utf16.Encode([]rune(f.Name))...)