Default variable syntax detection conflicts with variable syntax used by AWS

[azurelogic]

This is a Bug Report

Description

There are a number of places where AWS uses ${stuff}, ${aws:stuff}, and ${iot:stuff} syntax for variables (see https://docs.aws.amazon.com/iot/latest/developerguide/iot-substitution-templates.html and https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_variables.html for examples). This is problematic as the existing default regex used for variable syntax detection cannot distinguish these AWS variables from Serverless variables.

Similar or dependent issues:

• Allow for escaping of variable syntax in serverless.yml #3565 talks about an escape syntax which is unnecessary if the regex is improved

[pmuens]

Closing since this issue is quite old and we've shipped newer versions with fixes in the past.

Feel free to re-open if this issue is still around...