Don't set username or email when unchanged

Author: smashwilson

lib/controllers/git-tab-controller.js

@@ -371,9 +371,19 @@ export default class GitTabController extends React.Component {
 
   closeIdentityEditor = () => this.setState({editingIdentity: false})
 
-  setUsername = () => this.props.repository.setConfig('user.name', this.usernameBuffer.getText(), {global: true})
+  setUsername = () => {
+    const newUsername = this.usernameBuffer.getText();
+    if (newUsername !== this.props.username) {
+      this.props.repository.setConfig('user.name', newUsername, {global: true});
+    }
+  }
 
-  setEmail = () => this.props.repository.setConfig('user.email', this.emailBuffer.getText(), {global: true})
+  setEmail = () => {
+    const newEmail = this.emailBuffer.getText();
+    if (newEmail !== this.props.email) {
+      this.props.repository.setConfig('user.email', newEmail, {global: true});
+    }
+  }
 
   restoreFocus() {
     this.refView.map(view => view.setFocus(this.lastFocus));