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Make parseopt available on all backends (#17009)

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* Make parseopt available on all backends

* fix spaces

* fix getopt and update prelude

* no crazy unnecessary version checks, use doAssert
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hlaaftana 2021-02-13 11:05:40 +03:00 • committed by GitHub
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@ -147,6 +147,14 @@ provided by the operating system.
issues like https://github.com/nim-lang/Nim/issues/13063 (which affected error messages)
for modules importing `std/wrapnils`.
- `parseopt.initOptParser` has been made available and `parseopt` has been
added back to `prelude` for all backends. Previously `initOptParser` was
unavailable if the `os` module did not have `paramCount` or `paramStr`,
but the use of these in `initOptParser` were conditionally to the runtime
arguments passed to it, so `initOptParser` has been changed to raise
`ValueError` when the real command line is not available. `parseopt` was
previously excluded from `prelude` for JS, as it could not be imported.
## Language changes
- `nimscript` now handles `except Exception as e`.