Whitespace flags not respected on blocks (for/if)

[chrisghill]

Checklist

• [x] I have searched the issue list
• [x] I have tested my example against Shopify Liquid. (This isn't necessary if the actual behavior is a panic, or an error for which IsTemplateError returns false.)

Expected Behavior

Respect whitespace flags in for and if blocks.

My friends are:

{%- for friend in people -%}
{{ friend }},
{%- endfor -%}

and I like them!

with

{"people": ["alice", "bob"]}

Should render as

My friends are:alice,bob,and I like them!

https://liquidjs.com/playground.html#TXkgZnJpZW5kcyBhcmU6Cgp7JS0gZm9yIGZyaWVuZCBpbiBwZW9wbGUgLSV9Cnt7IGZyaWVuZCB9fSwKeyUtIGVuZGZvciAtJX0KCmFuZCBJIGxpa2UgdGhlbSE=,eyJwZW9wbGUiOiBbImFsaWNlIiwgImJvYiJdfQ==

Actual Behavior

Whitespace flags are ignored:

My friends are:


alice,

bob,


and I like them!

Detailed Description

It seems the TrimLeft and TrimRight functions aren't invoked at the block level.

Possible Solution

Invoke TrimLeft and TrimRight on the block during rendering.

[chrisghill]

Opening a PR to fix this.

[zsdyx]

hi, @chrisghill What to Publish a New Version, fix bug

[chrisghill]

Hey @zsdyx. I'm sorry, I don't understand what you asked.

[LorienMan]

The proposed pull request does not completely fix the issue as "block" nodes have actually 4 trim params: left outside, right inside, left inside, right outside and in PR it handles only "outside" trims.

That would be great to have all whitespace trim issues fixed some day :)

[LorienMan]

... and with if/elsif/else it's getting even worse 😨

[jamslinger]

I also notices the whitespace control does not match normal liquid behavior and opened a PR with an attempt to fix it. Feedback is much appreciated :)