fix(commit): fixes Windows multiline commits

Windows git command line will not handle multiline commit messages passed to it regularly. Instead,

we must add multiple -m arguments, one for each line. I landed this feature in git-gulp previously

but we needed to detect the os and pass an array of lines to git-gulp in order for it to use this

method. This change makes sure that we use the -m method when commiting on windows.

Author: jimthedev

package.json

@@ -5,7 +5,7 @@
   "main": "src/index.js",
   "scripts": {
     "check-coverage": "istanbul check-coverage --statements 80 --branches 80 --functions 80 --lines 80 ",
-    "commit": "git-cz",
+    "commit": "node bin/git-cz",
     "build": "babel src --out-dir dist",
     "build:watch": "babel --watch src --out-dir dist",
     "prepublish": "npm run build",

src/git/commit.js

@@ -1,3 +1,4 @@
+import os from 'os';
 import git from 'gulp-git';
 import gulp from 'gulp';
 import dedent from 'dedent';
@@ -11,12 +12,21 @@ export { commit };
 function commit(sh, repoPath, message, options, done) {
 
   var alreadyEnded = false;
+  let dedentedMessage = dedent(message);
+  let operatingSystemNormalizedMessage;
+  // On windows we must use an array in gulp-git instead of a string because
+  // command line parsing works differently
+  if(os.platform()=="win32") {
+    operatingSystemNormalizedMessage = dedentedMessage.split(/\r?\n/);
+  } else {
+    operatingSystemNormalizedMessage = dedentedMessage;
+  }
 
   // Get a gulp stream based off the config
   gulp.src(repoPath)
 
     // Format then commit
-    .pipe(git.commit(dedent(message), options))
+    .pipe(git.commit(operatingSystemNormalizedMessage, options))
 
     // Write progress to the screen
     .on('data',function(data) {