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    # minimatch
    
    A minimal matching utility.
    
    [![Build Status](https://travis-ci.org/isaacs/minimatch.svg?branch=master)](http://travis-ci.org/isaacs/minimatch)
    
    
    This is the matching library used internally by npm.
    
    It works by converting glob expressions into JavaScript `RegExp`
    objects.
    
    ## Usage
    
    ```javascript
    var minimatch = require("minimatch")
    
    minimatch("bar.foo", "*.foo") // true!
    minimatch("bar.foo", "*.bar") // false!
    minimatch("bar.foo", "*.+(bar|foo)", { debug: true }) // true, and noisy!
    ```
    
    ## Features
    
    Supports these glob features:
    
    * Brace Expansion
    * Extended glob matching
    * "Globstar" `**` matching
    
    See:
    
    * `man sh`
    * `man bash`
    * `man 3 fnmatch`
    * `man 5 gitignore`
    
    ## Minimatch Class
    
    Create a minimatch object by instantiating the `minimatch.Minimatch` class.
    
    ```javascript
    var Minimatch = require("minimatch").Minimatch
    var mm = new Minimatch(pattern, options)
    ```
    
    ### Properties
    
    * `pattern` The original pattern the minimatch object represents.
    * `options` The options supplied to the constructor.
    * `set` A 2-dimensional array of regexp or string expressions.
      Each row in the
      array corresponds to a brace-expanded pattern.  Each item in the row
      corresponds to a single path-part.  For example, the pattern
      `{a,b/c}/d` would expand to a set of patterns like:
    
            [ [ a, d ]
            , [ b, c, d ] ]
    
        If a portion of the pattern doesn't have any "magic" in it
        (that is, it's something like `"foo"` rather than `fo*o?`), then it
        will be left as a string rather than converted to a regular
        expression.
    
    * `regexp` Created by the `makeRe` method.  A single regular expression
      expressing the entire pattern.  This is useful in cases where you wish
      to use the pattern somewhat like `fnmatch(3)` with `FNM_PATH` enabled.
    * `negate` True if the pattern is negated.
    * `comment` True if the pattern is a comment.
    * `empty` True if the pattern is `""`.
    
    ### Methods
    
    * `makeRe` Generate the `regexp` member if necessary, and return it.
      Will return `false` if the pattern is invalid.
    * `match(fname)` Return true if the filename matches the pattern, or
      false otherwise.
    * `matchOne(fileArray, patternArray, partial)` Take a `/`-split
      filename, and match it against a single row in the `regExpSet`.  This
      method is mainly for internal use, but is exposed so that it can be
      used by a glob-walker that needs to avoid excessive filesystem calls.
    
    All other methods are internal, and will be called as necessary.
    
    ### minimatch(path, pattern, options)
    
    Main export.  Tests a path against the pattern using the options.
    
    ```javascript
    var isJS = minimatch(file, "*.js", { matchBase: true })
    ```
    
    ### minimatch.filter(pattern, options)
    
    Returns a function that tests its
    supplied argument, suitable for use with `Array.filter`.  Example:
    
    ```javascript
    var javascripts = fileList.filter(minimatch.filter("*.js", {matchBase: true}))
    ```
    
    ### minimatch.match(list, pattern, options)
    
    Match against the list of
    files, in the style of fnmatch or glob.  If nothing is matched, and
    options.nonull is set, then return a list containing the pattern itself.
    
    ```javascript
    var javascripts = minimatch.match(fileList, "*.js", {matchBase: true}))
    ```
    
    ### minimatch.makeRe(pattern, options)
    
    Make a regular expression object from the pattern.
    
    ## Options
    
    All options are `false` by default.
    
    ### debug
    
    Dump a ton of stuff to stderr.
    
    ### nobrace
    
    Do not expand `{a,b}` and `{1..3}` brace sets.
    
    ### noglobstar
    
    Disable `**` matching against multiple folder names.
    
    ### dot
    
    Allow patterns to match filenames starting with a period, even if
    the pattern does not explicitly have a period in that spot.
    
    Note that by default, `a/**/b` will **not** match `a/.d/b`, unless `dot`
    is set.
    
    ### noext
    
    Disable "extglob" style patterns like `+(a|b)`.
    
    ### nocase
    
    Perform a case-insensitive match.
    
    ### nonull
    
    When a match is not found by `minimatch.match`, return a list containing
    the pattern itself if this option is set.  When not set, an empty list
    is returned if there are no matches.
    
    ### matchBase
    
    If set, then patterns without slashes will be matched
    against the basename of the path if it contains slashes.  For example,
    `a?b` would match the path `/xyz/123/acb`, but not `/xyz/acb/123`.
    
    ### nocomment
    
    Suppress the behavior of treating `#` at the start of a pattern as a
    comment.
    
    ### nonegate
    
    Suppress the behavior of treating a leading `!` character as negation.
    
    ### flipNegate
    
    Returns from negate expressions the same as if they were not negated.
    (Ie, true on a hit, false on a miss.)
    
    ### partial
    
    Compare a partial path to a pattern.  As long as the parts of the path that
    are present are not contradicted by the pattern, it will be treated as a
    match.  This is useful in applications where you're walking through a
    folder structure, and don't yet have the full path, but want to ensure that
    you do not walk down paths that can never be a match.
    
    For example,
    
    ```js
    minimatch('/a/b', '/a/*/c/d', { partial: true })  // true, might be /a/b/c/d
    minimatch('/a/b', '/**/d', { partial: true })     // true, might be /a/b/.../d
    minimatch('/x/y/z', '/a/**/z', { partial: true }) // false, because x !== a
    ```
    
    ### allowWindowsEscape
    
    Windows path separator `\` is by default converted to `/`, which
    prohibits the usage of `\` as a escape character. This flag skips that
    behavior and allows using the escape character.
    
    ## Comparisons to other fnmatch/glob implementations
    
    While strict compliance with the existing standards is a worthwhile
    goal, some discrepancies exist between minimatch and other
    implementations, and are intentional.
    
    If the pattern starts with a `!` character, then it is negated.  Set the
    `nonegate` flag to suppress this behavior, and treat leading `!`
    characters normally.  This is perhaps relevant if you wish to start the
    pattern with a negative extglob pattern like `!(a|B)`.  Multiple `!`
    characters at the start of a pattern will negate the pattern multiple
    times.
    
    If a pattern starts with `#`, then it is treated as a comment, and
    will not match anything.  Use `\#` to match a literal `#` at the
    start of a line, or set the `nocomment` flag to suppress this behavior.
    
    The double-star character `**` is supported by default, unless the
    `noglobstar` flag is set.  This is supported in the manner of bsdglob
    and bash 4.1, where `**` only has special significance if it is the only
    thing in a path part.  That is, `a/**/b` will match `a/x/y/b`, but
    `a/**b` will not.
    
    If an escaped pattern has no matches, and the `nonull` flag is set,
    then minimatch.match returns the pattern as-provided, rather than
    interpreting the character escapes.  For example,
    `minimatch.match([], "\\*a\\?")` will return `"\\*a\\?"` rather than
    `"*a?"`.  This is akin to setting the `nullglob` option in bash, except
    that it does not resolve escaped pattern characters.
    
    If brace expansion is not disabled, then it is performed before any
    other interpretation of the glob pattern.  Thus, a pattern like
    `+(a|{b),c)}`, which would not be valid in bash or zsh, is expanded
    **first** into the set of `+(a|b)` and `+(a|c)`, and those patterns are
    checked for validity.  Since those two are valid, matching proceeds.