fwcd / fwcd/kotlin-language-server

Diagnostics disappear when using a formatter

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Dominant language
Kotlin
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Description

I use coc-kotlin and if I include "kotlin" in the coc.preferences.formatOnSaveFiletypes setting, all diagnostics in the file disappear whenever I save and a formatting action takes place.
If the code was already formatted, this does not happen - only if the formatting actually changes the file.

I have turned it off for now, but I quite like auto-formatting.

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Research direction

Reproduce with coc-kotlin by enabling "kotlin" in coc.preferences.formatOnSaveFiletypes, then save a Kotlin file whose formatting changes. Compare diagnostics before and after the formatting action; done means diagnostics remain visible after a changed-file save.

Written by the indexing model from the issue text.

Assessment

Tech stack
kotlin
Domain
tooling
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
42/100

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