Some significant whitespace is inserted in "xmlWhitespaceSensitivity: ignore" mode

Assume the following xml file:

<test>

   <field name="report_name">event_third_party.template_event_third_party_summary</field>

   <field name="report_file">event_third_party.template_event_third_party_summary</field>

</test>

In xmlWhitespaceSensitivity: ignore mode, signficant whitespace is sometimes inserted to cut long lines, so we get:

<test>
    <field name="report_name">
        event_third_party.template_event_third_party_summary
    </field>
    <field name="report_file">
        event_third_party.template_event_third_party_summary
    </field>
</test>

For our application, the inserted space in field elements is significant.

In strict mode the issue does not occur, but then most automatic indenting is disabled.

My feeling is that, in ignore mode, the text content of an element should never be modified as soon as there is a non-whitespace character in it.

[sbidoul]

@kddeisz there must be a misunderstanding.

I totally agree that determining if a node containing only white space is significant or not requires xml:space (and possibly access to the schema to obtain its value, which is out of scope for this tool).

That is not what I am asking for.

To clarify, I found a nice description of different types of white space in XML at https://www.liquid-technologies.com/XML/Whitespace.aspx, and I copy the relevant picture here for clarity.

What prettier/plugin-xml needs is a mode where it allows itself to reformat red and blue white space, while never modifying green whitespace.

[sbidoul]

I don’t know if/when I’ll be able to do a PR. In the meantime could we reopen the issue to track this enhancement request ?

What do you recommend: updating the behavior of xmlWhitespaceSensitiveity=ignore/strict or add a third option ?