Fix issue with backslashes when using pattern function

pattern/pattern.go

@@ -1,12 +1,19 @@
 package pattern
 
-import "path/filepath"
+import (
+	"path/filepath"
+	"strings"
+)
 
 // Match checks whether a string matches a pattern
 func Match(pattern, s string) bool {
 	if pattern == "*" {
 		return true
 	}
+	// Backslashes break filepath.Match, so we'll remove all of them.
+	// This has a pretty significant impact on performance when there
+	// are backslashes, but at least it doesn't break filepath.Match.
+	s = strings.ReplaceAll(s, "\\", "")
 	matched, _ := filepath.Match(pattern, s)
 	return matched
 }