New: Add flipBackslashes option to disable auto conversion of slash…

…es (closes #24) (#25)

README.md

@@ -36,10 +36,19 @@ globParent('path/foo'); // 'path' (see issue #3 for details)
 
 ## API
 
-### `globParent(maybeGlobString)`
+### `globParent(maybeGlobString, [options])`
 
 Takes a string and returns the part of the path before the glob begins. Be aware of Escaping rules and Limitations below.
 
+#### options
+
+```js
+{
+  // Disables the automatic conversion of slashes for Windows
+  flipBackslashes: true
+}
+```
+
 ## Escaping
 
 The following characters have special significance in glob patterns and must be escaped if you want them to be treated as regular path characters:

index.js

@@ -10,9 +10,16 @@ var enclosure = /[\{\[].*[\/]*.*[\}\]]$/;
 var globby = /(^|[^\\])([\{\[]|\([^\)]+$)/;
 var escaped = /\\([\*\?\|\[\]\(\)\{\}])/g;
 
-module.exports = function globParent(str) {
+/**
+ * @param {string} str
+ * @param {Object} opts
+ * @param {boolean} [opts.flipBackslashes=true]
+ */
+module.exports = function globParent(str, opts) {
+  var options = Object.assign({ flipBackslashes: true }, opts);
+
   // flip windows path separators
-  if (isWin32 && str.indexOf(slash) < 0) {
+  if (options.flipBackslashes && isWin32 && str.indexOf(slash) < 0) {
     str = str.replace(backslash, slash);
   }
 

test/index.test.js

@@ -84,7 +84,12 @@ describe('glob-parent', function() {
     assert.equal(gp('\\{foo,bar}/'), '{foo,bar}');
     assert.equal(gp('\\{foo,bar\\}/'), '{foo,bar}');
     assert.equal(gp('{foo,bar\\}/'), '.');
-    if (!isWin32) {
+
+    if (isWin32) {
+      // On Windows we are trying to flip backslashes foo-\\( → foo-/(
+      assert.equal(gp('foo-\\(bar\\).md'), 'foo-');
+    } else {
+      assert.equal(gp('foo-\\(bar\\).md'), '.');
       assert.equal(gp('\\[bar]'), '[bar]');
       assert.equal(gp('[bar\\]'), '.');
       assert.equal(gp('\\{foo,bar\\}'), '{foo,bar}');
@@ -135,6 +140,12 @@ describe('glob-parent', function() {
 
     done();
   });
+
+  it('should respect disabled auto flip backslashes', function(done) {
+    assert.equal(gp('foo-\\(bar\\).md', { flipBackslashes: false }), '.');
+
+    done();
+  });
 });
 
 describe('glob2base test patterns', function() {