patch 8.2.4883: string interpolation only works in heredoc Commit: https://github.com/vim/vim/commit/2eaef106e4a7fc9dc74a7e672b5f550ec1f9786e Author: LemonBoy <thatlemon@gmail.com> Date: Fri May 6 13:14:50 2022 +0100 patch 8.2.4883: string interpolation only works in heredoc Problem: String interpolation only works in heredoc. Solution: Support interpolated strings. Use syntax for heredoc consistent with strings, similar to C#. (closes #10327)