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diff --git a/autoload/xolox/misc/os.vim b/autoload/xolox/misc/os.vim
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+" Vim auto-load script
+" Author: Peter Odding <peter@peterodding.com>
+" Last Change: November 24, 2011
+" URL: http://peterodding.com/code/vim/misc/
+
+let g:xolox#misc#os#version = '0.1'
+
+" Check whether Vim is running on Microsoft Windows.
+
+function! xolox#misc#os#is_win()
+  return has('win16') || has('win32') || has('win64')
+endfunction
+
+" Execute an external command (hiding the console on Windows when possible).
+
+function! xolox#misc#os#exec(cmdline, ...)
+  try
+    " Try using my shell.vim plug-in.
+    return call('xolox#shell#execute', [a:cmdline, 1] + a:000)
+  catch /^Vim\%((\a\+)\)\=:E117/
+    " Fall back to system() when we get an "unknown function" error.
+    let output = call('system', [a:cmdline] + a:000)
+    if v:shell_error
+      throw printf("os.vim %s: Command %s failed: %s", g:xolox#misc#os#version, a:cmdline, xolox#misc#str#trim(output))
+    endif
+    return split(output, "\n")
+  endtry
+endfunction
+
+" vim: ts=2 sw=2 et