Only partial syntax highlighting in Kotlin script file

Question

I opened a folder in Android Studio which contains a Kotlin script file (.kts). I configured a JDK as SDK in Project Structure (but I added no gradle files), and running the file as Kotlin script works fine. However the syntax highlighting is only PARTIALLY working, see below example (Linux Mint 19.3 and AS 4.1.3):

Some of the stuff missing:

unused variable should be gray (val unused)
extension methods (.forEach/.to/.map/.toInt/...) should be yellow and italic
errors should be underlined red
bad style such as extra spaces should be underlined yellow
etc.

What's even going on here? Is this some sort of "fallback" mode?

Any way to use the "full" syntax highlighting from normal Android projects, so I can spot mistakes earlier?

For reference, this is what it "should" look like (pasted into a random Android project):

Maybe this YouTrack issue is related.

Mahozad
– Mahozad

2022-05-14 16:16:38 +00:00
Commented May 14, 2022 at 16:16 — Mahozad
– Mahozad, Commented May 14, 2022 at 16:16
That doesn't seem related to me, can you explain?

xjcl
– xjcl

2022-05-14 21:00:44 +00:00
Commented May 14, 2022 at 21:00 — xjcl
– xjcl, Commented May 14, 2022 at 21:00
So, forget about it.

Mahozad
– Mahozad

2022-05-15 05:55:00 +00:00
Commented May 15, 2022 at 5:55 — Mahozad
– Mahozad, Commented May 15, 2022 at 5:55

xjcl · Accepted Answer · 2021-05-04 22:54:41Z

10

Renaming the file to end in *.main.kts (scriptname.main.kts) enabled full highlighting for me!

answered May 4, 2021 at 22:54

xjcl

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Comments

Jishin Dev · Accepted Answer · 2023-02-27 11:59:43Z

3

Newer IDE versions have a Repair IDE (File->Repair IDE) option that did the trick for me. It takes you through a set of steps - reindexing, reopening the project, invalidate cache restart etc and tries to repair the IDE.

answered Feb 27, 2023 at 11:59

Jishin Dev

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siginur Over a year ago

I spent a whole day trying to resolve the issue and tried a ton of solutions, but nothing helped me except this answer. Thank you! Important note: There are a few steps in the "Repair IDE" process, and my issue was resolved only in the last step.

Sasha Shpota · Accepted Answer · 2021-05-04 11:24:42Z

1

I get this type of issues from time to time with IntelliJ IDEA. I haven't found the reason why it happens, neither do I know the 100% working solution. But here are the options that usually help me solve it:

Restart IDE
Invalidating caches: File > Invalidate Caches...
Re-import the project. Remove the .idea folder and the project.iml file and try to import the project again.
Update the IDE. Last time I had this issue, nothing helped but updating IDEA to 2021.1.

I hope some of these options will help.

answered May 4, 2021 at 11:24

Sasha Shpota

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3 Comments

xjcl Over a year ago

Didn't help, not even with IDEA 2021.1. I guess editing lone script files without a gradle file / project around it just isn't supported?

xjcl Over a year ago

I found a solution, see my other answer

findusl Over a year ago

Thanks for me removing the .idea folder did the trick

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