Closed
Description
Behavior of command line option -help is incorrect with Scala 3 (see also issue 11452) :
Scala 2 output
The three commands scala, scalac and scaladoc print some help message :
user@host MINGW64 /w/dotty
$ export JAVA_HOME=/c/opt/jdk-1.8.0_282-b08/
user@host MINGW64 /w/dotty
$ /c/opt/scala-2.13.4/bin/scala -help 2>&1 | head -4
Usage: scala <options> [<script|class|object|jar> <arguments>]
or scala -help
All options to scalac (see scalac -help) are also allowed.
user@host MINGW64 /w/dotty
$ /c/opt/scala-2.13.4/bin/scalac -help 2>&1 | head -4
Usage: scalac <options> <source files>
Standard options:
-Dproperty=value Pass -Dproperty=value directly to the runtime system.
user@host MINGW64 /w/dotty
$ /c/opt/scala-2.13.4/bin/scaladoc -help 2>&1 | head -4
Usage: scaladoc <options> <source files>
where possible scaladoc options:
-author Include authors. [false]
Scala 3 output
Only scalac behaves correctly :
user@host MINGW64 /w/dotty
$ /c/opt/scala-3.0.0-RC1/bin/scala -help
Starting scala3 REPL...
scala> :quit
user@host MINGW64 /w/dotty
$ /c/opt/scala-3.0.0-RC1/bin/scalac -help 2>&1 | head -4
Usage: scalac <options> <source files>
where possible standard options include:
-P Pass an option to a plugin, e.g. -P:<plugin>:<opt>
-X Print a synopsis of advanced options.
user@host MINGW64 /w/dotty
$ /c/opt/scala-3.0.0-RC1/bin/scaladoc -help 2>&1 | head -4
Destination is not provided, please provide '-d' parameter pointing to directory where docs should be created
Failure
Expectation
Same behavior for Scala 2 and Scala 3.