From 0a95a9131d4423e2a11b36832fdcb7edd71478a9 Mon Sep 17 00:00:00 2001
From: Kael Zhang <i+github@kael.me>
Date: Wed, 14 Aug 2019 17:14:28 +0800
Subject: [PATCH] 5.1.3: gitignore rules 2.22.1

---
 index.js               | 17 +++++++++--------
 package.json           |  2 +-
 test/fixtures/cases.js | 31 ++++++++++++++++++++-----------
 3 files changed, 30 insertions(+), 20 deletions(-)

diff --git a/index.js b/index.js
index f676f24..6ea9cd1 100644
--- a/index.js
+++ b/index.js
@@ -111,14 +111,6 @@ const REPLACERS = [
     // > A leading slash matches the beginning of the pathname.
     // > For example, "/*.c" matches "cat-file.c" but not "mozilla-sha1/sha1.c".
     // A leading slash matches the beginning of the pathname
-
-    // WTF! https://git-scm.com/docs/gitignore changes, the new rules are
-
-    // > If there is a separator at the beginning or middle (or both)
-    // > of the pattern, then the pattern is relative to the directory level of
-    // >.the particular .gitignore file itself. Otherwise the pattern may also
-    // > match at any level below the .gitignore level.
-
     /^\//,
     () => '^'
   ],
@@ -174,11 +166,20 @@ const REPLACERS = [
     // If starts with '**', adding a '^' to the regular expression also works
     /^(?=[^^])/,
     function startingReplacer () {
+      // If has a slash `/` at the beginning or middle
       return !/\/(?!$)/.test(this)
+        // > Prior to 2.22.1
         // > If the pattern does not contain a slash /,
         // >   Git treats it as a shell glob pattern
         // Actually, if there is only a trailing slash,
         //   git also treats it as a shell glob pattern
+
+        // After 2.22.1 (but compatible)
+        // > If there is a separator at the beginning or middle (or both)
+        // > of the pattern, then the pattern is relative to the directory
+        // > level of the particular .gitignore file itself.
+        // > Otherwise the pattern may also match at any level below
+        // > the .gitignore level.
         ? '(?:^|\\/)'
 
         // > Otherwise, Git treats the pattern as a shell glob suitable for
diff --git a/package.json b/package.json
index 75d26c3..510af3c 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ignore",
-  "version": "5.1.2",
+  "version": "5.1.3",
   "description": "Ignore is a manager and filter for .gitignore rules, the one used by eslint, gitbook and many others.",
   "files": [
     "legacy.js",
diff --git a/test/fixtures/cases.js b/test/fixtures/cases.js
index d160a61..a2803c1 100644
--- a/test/fixtures/cases.js
+++ b/test/fixtures/cases.js
@@ -9,17 +9,26 @@ function readPatterns (file) {
 }
 
 const cases = [
-  // [
-  //   '#56',
-  //   [
-  //     '/*/',
-  //     '!/foo/'
-  //   ],
-  //   {
-  //     'foo/bar.js': 0
-  //   },
-  //   true
-  // ],
+  [
+    'gitignore 2.22.1 example',
+    [
+      'doc/frotz/'
+    ],
+    {
+      'doc/frotz/': 1,
+      'a/doc/frotz/': 0
+    }
+  ],
+  [
+    '#56',
+    [
+      '/*/',
+      '!/foo/'
+    ],
+    {
+      'foo/bar.js': 0
+    }
+  ],
   [
     'object prototype',
     [