Mass-moving items into VisualEditor product

Not sure this isn't intended behaviour. Roan?

Tweaking summary so it's clear this is about how multiple-tilde strings are handled on save.

Actually a Parsoid issue, moving.

We don't recognize tildes in the tokenizer yet, which would also be the reason why they are not yet escaped. Tildes are already included in syntactic stops used by urltext, but there is no production actually matching them. Should be relatively easy to add.

For regular Wikitext->HTML parsing, those tildes need to be converted back to plain text however (essentially ignored), as they are normally only processed in a pre-save transform.

An alternative (and arguably simpler) solution would be a simple regexp-based escape rule in escapeWikitext.

Patch committed in https://gerrit.wikimedia.org/r/37996