"important.txt" 
/"important.txt" \d\+L, \d\+C/

"another dir\some file.txt" 
?"another dir[/\\]some file.txt" \d\+L, \d\+C?
Test: Should complain that the relative directory does not exist.
+Backup directory '.*[/\\]another dir[/\\]backup[/\\]\?' does NOT exist!+

+"E:[\\/]temp[\\/]WriteBackupTest[\\/]another dir[\\/]new file" +

Test: Should complain that the relative directory does not exist.
+Backup directory '.*[/\\]another dir[/\\]backup[/\\]\?' does not exist!+
+"backup[\\/]new file.\d\{8}[a-z]" +
?"backup/new file.\d\{8}[a-z]" \[New] \d\+L, \d\+C written?

40 more lines

/\nE486: Pattern not found: ...\n/

/\nE486: Pattern not found: ...\n/

