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Flag -language doesn't list options, nor validate them #5905

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scabug opened this issue Jun 13, 2012 · 5 comments
Closed

Flag -language doesn't list options, nor validate them #5905

scabug opened this issue Jun 13, 2012 · 5 comments
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enhancement has PR help wanted
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2.11.1

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scabug commented Jun 13, 2012

The compiler offers to way to discover what are the valid options for the -language parameter, nor does any kind of validation on what is passed to it. That makes it very difficult to check for things like -language:experimental.macros vs -language:experimental.macro.
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scabug commented Jun 13, 2012

Imported From: https://issues.scala-lang.org/browse/SI-5905?orig=1
Reporter: @dcsobral
Affected Versions: 2.10.0
See #5764

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scabug commented Jul 3, 2012

@adriaanm said:
the help message should be generated by looking at the language object's members
most of the code needed for this is there, so this would make for a great community contribution!

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scabug commented Feb 28, 2014

@som-snytt said:
Also learned you can say scalac -language postfixOps -- file.scala, which is why scalac -language file.scala doesn't yield a meaningful message.

scala/scala#3597

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scabug commented Mar 1, 2014

@clhodapp said:
Some might disagree, but it would be a shame to me to lose -language:_

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scabug commented Mar 1, 2014

@som-snytt said:
I thought that was covered under -Xscalista.

No one will disagree, I just forgot the use case when struggling against the fluency of the options API. Thanks!

I wonder if it's worth retrofitting e.g. -Xprint:_. Just a thought.

@scabug scabug closed this as completed May 9, 2014
@scabug scabug added this to the 2.11.1 milestone Apr 7, 2017
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