title: vsim does not accept -modelsimini parameter on Windows
body: <p>I'm using the command line argument <code>-modelsimini &lt;modelsim.ini&gt;</code> to specify my own <code>modelsim.ini</code> file for most QuestaSim / ModelSim executables.</p>
  
  <p>This works perfectly fine on Linux for <code>vcom</code> and <code>vsim</code>, as well as for <code>vcom</code> on Windows. But the Windows <code>vsim</code> aborts and throws an error:</p>
  
  <pre><code>C:\Mentor\QuestaSim64\10.4c\win64\vsim.exe -do "do D:/git/PoC/sim/vSim.batch.tcl" -c -modelsimini D:\git\PoC\temp\precompiled\vsim\modelsim.ini -error 3473 -t 1fs test.arith_prng_tb
  Reading C:/Mentor/QuestaSim64/10.4c/tcl/vsim/pref.tcl
  
  # 10.4c
  
  # ** Error: (vsim-7) Failed to open -modelsimini file "{D:\git\PoC\temp\precompiled\vsim\modelsim.ini}" in read mode.
  #
  # Invalid argument. (errno = EINVAL)
  # Error loading design
  Error loading design
  # Errors: 1, Warnings: 0
  </code></pre>
  
  <p>The <code>modelsim.ini</code> files exists and has the following content:</p>
  
  <pre><code>[Library]
  others = $MODEL_TECH/../modelsim.ini
  </code></pre>
  
  <p>(This file will contain more lines if vendor tools add their library mappings.)</p>
  
  <p>How can I pass my own <code>modelsim.ini</code> configuration file to <code>vsim.exe</code>?</p>