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// Package gitignore implements matching file system paths to gitignore patterns that
// can be automatically read from a git repository tree in the order of definition
// priorities. It support all pattern formats as specified in the original gitignore
// documentation, copied below:
//
// Pattern format
// ==============
//
// - A blank line matches no files, so it can serve as a separator for readability.
//
// - A line starting with # serves as a comment. Put a backslash ("\") in front of
// the first hash for patterns that begin with a hash.
//
// - Trailing spaces are ignored unless they are quoted with backslash ("\").
//
// - An optional prefix "!" which negates the pattern; any matching file excluded
// by a previous pattern will become included again. It is not possible to
// re-include a file if a parent directory of that file is excluded.
// Git doesn’t list excluded directories for performance reasons, so
// any patterns on contained files have no effect, no matter where they are
// defined. Put a backslash ("\") in front of the first "!" for patterns
// that begin with a literal "!", for example, "\!important!.txt".
//
// - If the pattern ends with a slash, it is removed for the purpose of the
// following description, but it would only find a match with a directory.
// In other words, foo/ will match a directory foo and paths underneath it,
// but will not match a regular file or a symbolic link foo (this is consistent
// with the way how pathspec works in general in Git).
//
// - If the pattern does not contain a slash /, Git treats it as a shell glob
// pattern and checks for a match against the pathname relative to the location
// of the .gitignore file (relative to the toplevel of the work tree if not
// from a .gitignore file).
//
// - Otherwise, Git treats the pattern as a shell glob suitable for consumption
// by fnmatch(3) with the FNM_PATHNAME flag: wildcards in the pattern will
// not match a / in the pathname. For example, "Documentation/*.html" matches
// "Documentation/git.html" but not "Documentation/ppc/ppc.html" or
// "tools/perf/Documentation/perf.html".
//
// - A leading slash matches the beginning of the pathname. For example,
// "/*.c" matches "cat-file.c" but not "mozilla-sha1/sha1.c".
//
// Two consecutive asterisks ("**") in patterns matched against full pathname
// may have special meaning:
//
// - A leading "**" followed by a slash means match in all directories.
// For example, "**/foo" matches file or directory "foo" anywhere, the same as
// pattern "foo". "**/foo/bar" matches file or directory "bar"
// anywhere that is directly under directory "foo".
//
// - A trailing "/**" matches everything inside. For example, "abc/**" matches
// all files inside directory "abc", relative to the location of the
// .gitignore file, with infinite depth.
//
// - A slash followed by two consecutive asterisks then a slash matches
// zero or more directories. For example, "a/**/b" matches "a/b", "a/x/b",
// "a/x/y/b" and so on.
//
// - Other consecutive asterisks are considered invalid.
//
// Copyright and license
// =====================
//
// Copyright (c) Oleg Sklyar, Silvertern and source{d}
//
// The package code was donated to source{d} to include, modify and develop
// further as a part of the `go-git` project, release it on the license of
// the whole project or delete it from the project.
package gitignore
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