patch 8.0.0925: MS-Windows GUI: channel I/O not handled right away commit https://github.com/vim/vim/commit/62426e168ef29fb941d1bd91a112fa09445322a5 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Aug 13 15:37:58 2017 +0200 patch 8.0.0925: MS-Windows GUI: channel I/O not handled right away Problem: MS-Windows GUI: channel I/O not handled right away. Solution: Don't call process_message() unless a message is available. (Yasuhiro Matsumoto, closes #1969)

@echo off
rem batch file to start Vim with less.vim.
rem Read stdin if no arguments were given.
rem Written by Ken Takata.

if "%1"=="" (
  vim --cmd "let no_plugin_maps = 1" -c "runtime! macros/less.vim" -
) else (
  vim --cmd "let no_plugin_maps = 1" -c "runtime! macros/less.vim" %*
)