patch 8.0.0631: can't build with Perl 5.26 commit https://github.com/vim/vim/commit/fa4161cb0c266378012d3fde0eca56da8739528d Author: Bram Moolenaar <Bram@vim.org> Date: Sat Jun 10 15:46:23 2017 +0200 patch 8.0.0631: can't build with Perl 5.26 Problem: Perl 5.26 also needs S_TOPMARK and S_POPMARK defined. Solution: Define the functions when needed. (Jesin, closes https://github.com/vim/vim/issues/1748)

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refer to the Farsi help file by typing ":help farsi" in Vim.