patch 8.0.0848: using multiple ch_log functions is clumsy commit https://github.com/vim/vim/commit/2f3a90a3bd8505728c0b6d9ac3515f64ee19b357 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Aug 3 14:49:29 2017 +0200 patch 8.0.0848: using multiple ch_log functions is clumsy Problem: Using multiple ch_log functions is clumsy. Solution: Use variable arguments. (Ozaki Kiichi, closes https://github.com/vim/vim/issues/1919)

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Results:
First test: Start/End '[0, 16, 1, 0]/[0, 17, 1, 0]'
Second test: Start/End '[0, 19, 11, 0]/[0, 19, 67, 0]'