patch 8.1.0479: failure when setting 'varsofttabstop' to end in a comma commit https://github.com/vim/vim/commit/64f410742f101d7d5ea9e65503e1e0019605eaa5 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Oct 15 22:51:50 2018 +0200 patch 8.1.0479: failure when setting 'varsofttabstop' to end in a comma Problem: Failure when setting 'varsofttabstop' to end in a comma. (Ralf Schandl) Solution: Reject value with trailing command. Add test for invalid values (closes #3544)