patch 8.2.0918: duplicate code for evaluating expression argument Commit: https://github.com/vim/vim/commit/a9c010494767e43a51c443cac35ebc80d0831d0b Author: Bram Moolenaar <Bram@vim.org> Date: Sun Jun 7 14:50:50 2020 +0200 patch 8.2.0918: duplicate code for evaluating expression argument Problem: Duplicate code for evaluating expression argument. Solution: Merge the code and make the use more flexible.