JavaScript optional chaining operator “?.” causes syntax highlighting to mess up

[JonathanWilkins1]

I noticed twice now that whenever I use the optional chaining operator, the syntax highlighting turns all the JS code (inside a script tag) blue. It eventually fixes itself after a bunch more lines of code, but I’m not sure what exactly causes it to fix itself. Attached is a screenshot of where the messed up syntax highlighting starts after using ?.

[ghedwards]

Gave it a look but no luck tmLanguage files are like fine art, still considering a switch to tree sitter colouring

[burncitiesburn]

This potentially might be fix. This is very lightly tested.

I found that adding ":" next to the use of the ?. operator fixed the parsing which lead me to looking at the ternary parser.

These are changes to the syntaxes/cfml.tmLanguage.json file

Testing:

Before:

After:

I can push a PR with the change

[ghedwards]

Negative look ahead? Looks good. Yes please submit a PR