.hidden file in the app root directory (the same place as index.php). If found, each line of this file will be used as an ignore pattern. Each line should contain a single file or path pattern with no end-of-line delimiter..hidden file does not exist by default and must be created to be used.foo.txt and Foo.txt are not the same.? matches any single character* matches zero or more characters excluding /** matches zero or more characters including /[abc] matches a single character from the set (i.e. a, b or c)[a-c] matches a single character in the range (i.e. a, b or c)[^abc] matches any character not in the set (i.e. not a, b or c)[^a-c] matches any character not in the range (i.e. not a, b or c){foo,bar,baz} matches any pattern in the set (i.e. foo, bar or baz)(=foo) matches any file name that also contains foo(!foo) matches any file name that does not also contain foofoo Match the literal file or folder foo in the root folderfoo/bar Matches the literal file or folder bar in the foo folder*.txt Matches any file or folder ending with .txt in the root folder**/*.txt Matches any file or folder ending with .txt one or more folders deep (e.g. foo/bar.txt or foo/bar/baz.txt)**.txt Matches any file or folder ending with .txt (e.g. foo.txt, foo/bar.txt, foo/bar/baz.txt, etc.)foo/bar/*.txt Matches all .txt files or folders in the foo/bar folderfoo/bar/**.txt Matches all .txt files or folders in the foo/bar folder and sub-foldersfile.{yml,yaml} Matches a file or folder named file.yml or file.yaml in the root folderfile.tar(!.{gz,xz}) Matches a file named file.tar or file.tar.bz but not file.tar.gz or file.tar.xz