Tilde special escape character preceeded by a preprocessor name (compile-time constant) not working

[trianglePB]

Description of the Issue

The tilde character used to escape quotes in quoted strings is not working when preceeded by a compile-time constant.
Syntax highligting is affected as well as "Check code validity" will report errors because the string ends at the wrong quote leading to follow-up error.

Steps to Reproduce the Issue

For example:
MESSAGE "WARNING: The Database ~"{&tria_dbname_test}~" is not connected.".
will show that the string already ends before "is not connected".

Expected Behavior

The tilde should correctly escape the quote and the string must not end.

Actual Behavior

The tilde does not escape the following character if preceeded by a preprocessor name (compile-time constant) .

Screenshots

Debug Information

PPP v. 1.8.7