vue-cli 3.0生成的template元素比2.0的少一个空格

[GitHdu]

Version

3.2.1

Environment info

System:
    OS: macOS 10.14.2
    CPU: (4) x64 Intel(R) Core(TM) i5-4278U CPU @ 2.60GHz
  Binaries:
    Node: 10.14.1 - /usr/local/bin/node
    Yarn: 1.12.3 - /usr/local/bin/yarn
    npm: 6.5.0 - /usr/local/bin/npm
  Browsers:
    Chrome: 71.0.3578.98
    Firefox: Not Found
    Safari: 12.0.2
  npmGlobalPackages:
    @vue/cli: 3.2.1

Steps to reproduce

1 分别用vue-cli2和3新建工程
2 在template中写两个button

<template>
  <div>
    <button data-v-9fa485f6="">a</button>
    <button data-v-9fa485f6="">b</button>
  </div>
</template>

3. 控制台检查元素

What is expected?

a b
两个button之间有个空格

What is actually happening?

ab

---

有没有空格可能影响display：inline-block元素的样式

[haoqunjiang]

See #1020 (comment)