fix unexpected highlight words for custom meta properties

[dimaMachina]

use better regex

fixes #52

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[atomiks]

One of the tests is failing

[dimaMachina]

Thx, will fix later today

[atomiks]

@B2o5T feel free to just check for filename manually for now if need be. I know others might use something other than title/filename, but the library does intentionally use title="..." only so new wrappers should likely only use that.

Also note that part of the reason for the syntax is to also support other words that might do \w="..." for other features, where this will break. So a manual allowlist is probably better anyway. Either that or make it an option to the plugin and create a dynamic regex.

[dimaMachina]

Sorry for not finishing a fix, just was struggling with regex, found some workaround with skip/fail but js regex doesn’t support it

https://regex101.com/r/heqsZS/1

[atomiks]

#58