Prettier 3.9.4 (regression introduced in 3.9.0; last good version 3.8.5)

Playground link

# Options (if any):
--parser markdown

Input:

- [[slug|Label: with colon]]
- [[slug|A: B: C]]
- [[slug|Label with no colon]]
- [text|Label: with colon]

Output:

- [[slug|Label]]
- [[slug|A]]
- [[slug|Label with no colon]]
- [text|Label: with colon]

Expected output:

- [[slug|Label: with colon]]
- [[slug|A: B: C]]
- [[slug|Label with no colon]]
- [text|Label: with colon]

Why?

Text content after the first : inside a [[...|...]] is silently deleted — this is content loss, not reformatting, and Prettier should never change a document's content. This regressed in 3.9.0 (3.8.5 leaves the input untouched).

The trigger is specific to the double-bracket form: CommonMark parses [[a]] as a shortcut reference link nested inside another link, and the colon in the label triggers the drop. A single-bracket [text|Label: with colon] and a colon-free [[slug|Label]] are both left intact — so it's the [[...]] + : combination. This [[target|Alias: description]] shape is standard Obsidian/wiki-link syntax, so prettier --write silently strips the descriptive half of every such cross-reference in a docs vault.