Correctly handle file names containing spaces

package.json

@@ -33,6 +33,7 @@
     "babel-preset-es2015-mod": "^6.3.13",
     "chai": "^3.3.0",
     "colors": "^1.1.2",
+    "deindent": "^0.1.0",
     "eslint": "^1.6.0",
     "grunt": "^0.4.5",
     "grunt-babel": "^6.0.0",

src/patch/parse.js

@@ -52,7 +52,8 @@ export function parsePatch(uniDiff, options = {}) {
   // Parses the --- and +++ headers, if none are found, no lines
   // are consumed.
   function parseFileHeader(index) {
-    let fileHeader = (/^(\-\-\-|\+\+\+)\s+(\S*)\s?(.*?)\s*$/).exec(diffstr[i]);
+    const headerPattern = /^(---|\+\+\+)\s+([\S ]*)(?:\t(.*?)\s*)?$/;
+    const fileHeader = headerPattern.exec(diffstr[i]);
     if (fileHeader) {
       let keyPrefix = fileHeader[1] === '---' ? 'old' : 'new';
       index[keyPrefix + 'FileName'] = fileHeader[2];

test/patch/apply.js

@@ -3,6 +3,7 @@ import {parsePatch} from '../../lib/patch/parse';
 import {createPatch} from '../../lib/patch/create';
 
 import {expect} from 'chai';
+import deindent from 'deindent';
 
 describe('patch/apply', function() {
   describe('#applyPatch', function() {
@@ -602,5 +603,60 @@ describe('patch/apply', function() {
         complete: done
       });
     });
+
+    it('should handle file names containing spaces', done => {
+      const patch = deindent
+        `===================================================================
+        --- test file\theader1
+        +++ test file\theader2
+        @@ -1,2 +1,3 @@
+         line1
+        +line2
+         line3
+        ===================================================================
+        --- test file 2\theader1
+        +++ test file 2\theader2
+        @@ -1,2 +1,3 @@
+         foo1
+        +foo2
+         foo3
+        `;
+
+      const contents = {
+        'test file': deindent
+          `line1
+          line3
+          `,
+        'test file 2': deindent
+          `foo1
+          foo3
+          `
+      };
+
+      const expected = {
+        'test file': deindent
+          `line1
+          line2
+          line3
+          `,
+        'test file 2': deindent
+          `foo1
+          foo2
+          foo3
+          `
+      };
+
+      applyPatches(patch, {
+        loadFile(index, callback) {
+          callback(undefined, contents[index.oldFileName]);
+        },
+        patched(index, content) {
+          expect(content)
+              .to.equal(expected[index.newFileName])
+              .to.not.be.undefined;
+        },
+        complete: done
+      });
+    });
   });
 });