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2.8 regression: "@ _*" fails #3480

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scabug opened this issue May 26, 2010 · 8 comments
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2.8 regression: "@ _*" fails #3480

scabug opened this issue May 26, 2010 · 8 comments
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scabug commented May 26, 2010

Using both, eclipse plugin as well as scala, from today's revision (2.8.0.r22036-b20100526020129).

The valid use of "@ _*" is correctly compiled by scala but fails to be parsed in the eclipse plugin.
Example:

object RemainingArgs {

  def main(args: Array[String]): Unit = {  }
  
  	val aString = "Eclipse plugin cannot not handle this"
  	val Array( who, what @ _* ) = aString split (" ")
  	
}
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scabug commented May 26, 2010

Imported From: https://issues.scala-lang.org/browse/SI-3480?orig=1
Reporter: Lukas Pustina (lukas.pustina)

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scabug commented May 26, 2010

Atsuhiko Yamanaka (ymnk) said:
I have also encountered the similar problem with scalac and on REPL,

$$ scala
Welcome to Scala version 2.8.0.r22036-b20100526020129 (Java HotSpot(TM) Client VM, Java 1.6.0_16).
Type in expressions to have them evaluated.
Type :help for more information.

scala> val List(x@_*)=List(0)
<console>:1: error: illegal start of simple pattern
       val List(x@_*)=List(0)

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scabug commented May 26, 2010

Atsuhiko Yamanaka (ymnk) said:
It seems to me that this problem has been caused by Changeset r21973.

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scabug commented May 26, 2010

@milessabin said:
Also, for future reference, please note that Eclipse-specific bugs should be filed in their own [http://scala-ide.assembla.com/wiki/show/scala-ide/Bug_Reporting issue tracker].

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scabug commented May 26, 2010

Lukas Pustina (lukas.pustina) said:
Replying to [comment:3 milessabin]:

Also, for future reference, please note that Eclipse-specific bugs should be filed in their own [http://scala-ide.assembla.com/wiki/show/scala-ide/Bug_Reporting issue tracker].

ACK. Besides, it would be helpful to change the link on https://lampsvn.epfl.ch/trac/scala "Components: Tickets about, Scala IDE for Eclipse" to point to the mentioned link.

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scabug commented May 26, 2010

@milessabin said:
Replying to [comment:4 lukas.pustina]: Good catch ... done.

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scabug commented Jun 2, 2010

@SethTisue said:
this isn't specific to the Eclipse plugin. the 2.8.0.RC3 command line compiler gives:

  ~> scalac28 S.scala
S.scala:6: error: illegal start of simple pattern
  	val Array( who, what @ _* ) = aString split (" ")
                                  ^

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scabug commented Jun 4, 2010

@paulp said:
(In r22159) Reverts r21973, the patch I characterized as "hacky but no-risk"
in my commit message, for causing #3480. Closes #3480. I'd say
no review but who can trust a guy who throws around "no risk"
with such abandon.

@scabug scabug closed this as completed May 18, 2011
This was referenced Apr 7, 2017
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