exiting REPL in Windows 7

[sampso...@googlemail.com]

Having installed the current Scala binary in Windows 7 I started the REPL and
then exited with "exit()". It exited successfully but with the error message
'warning: there were 1 deprecation warning(s); re-run with -deprecation for details
TCC: C:\Program Files\scala\bin\scala.bat [92]  Unknown command "C:\Program"'

The package installs Scala in the "Program Files" folder of Windows, so I assume
this message means that the space in the name of the folder was unexpected.
I tried again with "sys.exit()" and again it complained that "C:\Program" was an
unknown command.

Windows is an OS that allows spaces in folder and file names.

Should the Scala folder be moved to a different folder? If so, what else needs to
be done e.g. changing environment variables?

Regards

John Sampson

[Antoine Gourlay]

Oh, this bring back memories…

Anyway, using the :quit command is the preferred way to close the REPL. The deprecation warning is indeed about Predef.exit() vs sys.exit(), see SI-4563. But that whitespace error seems to be a bug in the bat launcher.

It manages to start the REPL successfully, so the error is not with starting scala. Looking at your error message, try replacing line 92 of scala.bat (the last one), which should be:

 @%COMSPEC% /C exit %errorlevel% >nul

with this (note the double quotes):

@"%COMSPEC%" /C exit %errorlevel% >nul

This happens to you because you use TCC (which is in Progam Files) as the default interpreter instead of cmd (which is in system32).

I'm opening a ticket, %COMSPEC% should always be escaped anyway.

— Antoine

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[Antoine Gourlay]

Ticket is here: https://issues.scala-lang.org/browse/SI-7687

[Som Snytt]

Why would anyone ever want to exit the REPL?

Ever!

For the record, if it makes you feel better, I had to fix some space-quoting for cygwin, too.  Command lines abhor a space the way nature abhors a vacuum.

There's another ticket about passing in jvm options on Windows.  And I actually could never use the script runner on cygwin, for whatever reason.  That's too bad, because it's kind of fun.

[Antoine Gourlay]

On Tue, Jul 23, 2013 at 6:42 PM, Som Snytt <som....@gmail.com> wrote:

There's another ticket about passing in jvm options on Windows. 

Oh right I got bitten by that once. While I'm at it, there it goes: https://github.com/scala/scala/pull/2767

 

And I actually could never use the script runner on cygwin, for whatever reason.  That's too bad, because it's kind of fun.

Why would anyone purposefully use cygwin to start scala? Especially now that Powershell is built in all recent versions of Windows and JLine works fine in it...