whole_func_string: function getGitUser() {
      try {
          let name = execSync('git config --get user.name');
          let email = execSync('git config --get user.email');
          name = name && name.toString().trim();
          email = email && ('<' + email.toString().trim() + '>');
          return (name || '') + (email || '');
      }
      catch (e) {
          return '';
      }
  }
func_code_string: function getGitUser() {
      try {
          let name = execSync('git config --get user.name');
          let email = execSync('git config --get user.email');
          name = name && name.toString().trim();
          email = email && ('<' + email.toString().trim() + '>');
          return (name || '') + (email || '');
      }
      catch (e) {
          return '';
      }
  }
func_documentation_string: 获取 git 用户名
  
  @return {string}