hintProcessing dot interference issue on windows

[timotheecour]

replying to PM message regarding problems with koch temp c -r testament/testament.nim r tests/test.nim

• problem 1
  koch temp c -r testament/testament.nim r tests/test.nim
  probably doesn't do what you thought it did:
  it roughly calls:
  koch temp
  bin/nim_temp c -r testament/testament.nim r tests/test.nim

this doesn't use bin/nim_temp to run tests, for that you need --nim:bin/nim_temp (bin/nim_temp is only used here to compile testament/testament.nim)

• problem 2
  tests/test.nim is probably incorrect, should be tests/test/test.nim` according to fix #16693: testament spec nimout too lax nim-lang/Nim#16698

• problem 3
  running your command took 171s due to a regression I found thanks to looking into your use case regression: compilation 5x slower (33s => 171s for nim_temp c testament) nim-lang/Nim#16703

• problem 4
  I can't reproduce your problem so it's probably windows only (annoying dot remains); maybe it's due to the same problem on windows as this:
  fix hintProcessing dots interference with static:echo and hintCC; add tests for nim secret, add tests for hintProcessing, misc other bug fixes nim-lang/Nim#16495 (review)

when not defined(windows): # xxx: on windows, dots not properly handled, gives: `....2\n\n`

(ie, would work in cmdline line but not if compile command called indirectly via execCmdEx as may be the case with koch temp c -r testament/testament.nim r tests/test.nim