jinja2 - jinja 模板中的破折号意味着什么？

Question

在 jinja 文件中找到其中一些:

</extension>
{%- else -%}
<extension name="blabla">

还有

{% if freeswitch_dispatcher -%}
<extension name="hold_unhold">

看到破折号了吗？知道它的用途吗？

Answer 1

结果是 + 和 - 代表 whitespace control目的。

You can manually disable the lstrip_blocks behavior by putting a plus sign (+) at the start of a block
[...]
You can also strip whitespace in templates by hand. If you put an minus sign (-) to the start or end of an block (for example a for tag), a comment or variable expression you can remove the whitespaces after or before that block