简化了 theZiz/aha，使得只输出 HTML 片段。
注：
后来发现他原来的
--no--header就可以实现。 但我还要设置 css，所以加了 class。
源文件 _a.txt:
What do you mean?（这行被删除）
When you nod your head yes（单词改变）
But you wanna say no（单词添加）
What do you mean?（删除单词）
When you don't want me to move（这行不变）
源文件 _b.txt:
When you nod your haydes（单词改变）
But you wanna say me no（单词添加）
What you mean?（删除单词）
When you don't want me to move（这行不变）
But you tell me to go（这行新添加）
脚本 gen.sh：
git diff --color-words --no-index _a.txt _b.txt | aha > diffed.md输出 diffed.md:
<pre class="diffed">
<span style="font-weight:bold;">diff --git a/_a.txt b/_b.txt</span>
<span style="font-weight:bold;">index 0cb3b2a..d540f3f 100644</span>
<span style="font-weight:bold;">--- a/_a.txt</span>
<span style="font-weight:bold;">+++ b/_b.txt</span>
<span style="color:teal;">@@ -1,5 +1,5 @@</span>
<span style="color:red;text-decoration:line-through;">What do you mean?（这行被删除）</span>When you nod your <span style="color:red;text-decoration:line-through;">head yes（单词改变）</span><span style="color:green;">haydes（单词改变）</span>
But you wanna say <span style="color:green;">me</span> no（单词添加）
What<span style="color:red;text-decoration:line-through;">do</span> you mean?（删除单词）
When you don't want me to move（这行不变）
<span style="color:green;">But you tell me to go（这行新添加）</span>
</pre>加点 CSS：
pre {
border: 1px dotted gray;
background-color: #ececec;
color: #1111111;
padding: 0.5em;
word-wrap: normal;
word-break: break-all;
white-space: pre;
overflow: auto;
margin-bottom: 10px;
display: block;
}
pre.diffed {
background-color: white;
border: 1px dotted #f8bd0b;
font-size: 90%;
font-family: Consolas, Inpact, Arial, Hiragino, "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", SimSun, STXihei, Heiti, sans-serif;
}在我网站（Pretty Diff | 听歌学英语）上的效果：
