Unwanted whitespace in match arm

[msrd0]

For a Template struct containing a field ver: Option<&'a str> and the following template:

{% let suffix -%}
{% match ver -%}
  {% when Some with (ver) -%}
    {% let suffix = format!("-{}", ver) -%}
  {% when None -%}
    {% let suffix = String::new() -%}
{% endmatch -%}

This code is part of the first match arm: writer.write_str("\n ")?;. However, since every line ends with -%}, there should't be any newlines inserted into this part of the template.

[vallentin]

I'm wondering where the whitespace between the match and the first when should go. Whether it should go into the first match arm or before the match expression (thus "into" all match arms). The whitespace before endmatch is self-explanatory.

In short:

{% match ... %}[this whitespace]{% when ... %}

Should it result in:

match ... {
    Some(_) => {
        writer.write_str("[this whitespace]")?;

or

writer.write_str("[this whitespace]")?;
match ... {

@djc?

[djc]

Maybe we should just skip it always? I don't think there's really a natural place for it to go.