Suggestion preview: not working in json files?

[usernamehw]

"editor.suggest.preview": true,

Open suggest widget in package.json file:

[mkoeppen]

It isnt working for several file types. I miss the support in twig files. Is the filetyp-list somewhere configurable?

[hediet]

The problem is that the suggest item description wants to replace "desc" with "description" (and not just desc with description in which case desc is a simple prefix of description - "desc" is not a prefix of "description").
We are currently exploring to properly diff the strings or use the same character mapping logic that the suggest widget uses to support such scenarios.

[hediet]

In the current Insider build, you can set the preview mode to 'subwordDiff'

"editor.suggest.previewMode": "subwordDiff",

This is the default in todays build, but tomorrow the default will be prefix again.

Next milestone, I will explore a third preview mode that is more relaxed than prefix, but stricter than subwordDiff that should make the scenario in the screenshot work by default.

[hediet]

Instead of subwordDiff, there is now prefix, subword and subwordSmart. subwordSmart is the new default (previously prefix).

subwordSmart enables subword based diffing, but only if no ghost text would be shown before the cursor. This is already the default for inline suggestions.