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Everyone knows that a `help` command will result in `more information`.
This commit moves the version string to the second line and adds some
verve to the welcome.
If anyone can't live without the old banner, they are now able to
configure it explicitly, so there is still no blood on our hands.
```
$ scala
Welcome to Scala version 2.11.6 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_40).
Type in expressions to have them evaluated.
Type :help for more information.
scala> :quit
$ skala
Welcome to Scala!
version 2.11.7-20150623-155244-eab44dd092 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_40).
Type in expressions for evaluation. Or try :help.
scala> :quit
```
REPL tests now lop off the actual length of the welcome header; or, if
necessary, remove the version number from a header embedded in output.
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Closing the REPL with Ctrl+D does not issue a newline, so the user's
prompt displays on the same line as the `scala>` prompt. This is bad.
We now force a newline before closing the interpreter, and display
`:quit` while we're at it so that people know how to exit the REPL
(since `exit` doesn't exist anymore).
The tricky part was to only add a newline when the console is
interrupted, and *not* when it is closed by a command (like `:quit`),
since commands are processed after their text (including newline) has
been sent to the console.
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Make the test a SessionTest, where the file name appears just
once, in the transcript, and is trivially compared against itself.
The contents of the saved file are still output and compared with
the check file.
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A simple save command to write out the current replay stack.
```
scala> val i = 7
i: Int = 7
scala> val j= 8
j: Int = 8
scala> i * j
res0: Int = 56
scala> :save multy.script
scala> :q
apm@mara:~/tmp$ cat multy.script
val i = 7
val j= 8
i * j
apm@mara:~/tmp$ skala
Welcome to Scala version 2.11.0-20130626-204845-a83ca5bdf7 (OpenJDK 64-Bit Server VM, Java 1.7.0_21).
Type in expressions to have them evaluated.
Type :help for more information.
scala> :load multy.script
Loading multy.script...
i: Int = 7
j: Int = 8
res0: Int = 56
scala> :load multy.script
Loading multy.script...
i: Int = 7
j: Int = 8
res1: Int = 56
```
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