Spurious "Invalid character" errors at EOF about hcl2 HOT 4 CLOSED

This is also occurring in the alibaba/ecs-instance/alicloud module:

Error: Invalid character

  on .terraform/init-from-module/root/alibaba-terraform-alicloud-ecs-instance-063c382/main.tf line 88:
  88: }

This character is not used within the language.

There are no backticks in this file. In this case the error message appears only once, however.

from hcl2.

In the Alicloud case it appears that the error was caused as a side-effect of #16, which is now fixed.

from hcl2.

The cause of this is a quoted percent sign.

Our new parser uses %{ as the introducer for template control sequences, whereas previously it was interpreted literally. Our intent here is that a % not followed by a { will be treated literally, but the way that is implemented causes problems here because the % consumes its following " in order to check that it isn't a {, which in turn prevents the string terminator from being detected:

Error: Unterminated template string

  on weird.hcl line 63, in variable "user_host":
  63:   default     = "%"
  64: }

No closing marker was found for the string.

Unfortunately this ends up leaving things in a broken state because the scanner thinks it is still reading an embedded template while the parser has moved on and returned back to expression parsing, causing the following tokens to make no sense.

from hcl2.

This is fixed in 9245693.

from hcl2.