Fix for SI-4945, repl hang on -i input.

Other breakage had accumulated among Settings. I determined
that once upon a time, "MultiStringSetting" accepted arguments
like this:

  scala -foo bip bop bar

Somewhere this was changed to force a : argument, like

  scala -foo:bip,bop,bar

This incurs breakage.  The repl has always advertised its -i
option without a colon and it has always been a MultiStringSetting.
Forcing everything into the : seemed like the wrong thing,
especially because it will stomp on any whitespace containing
arguments, whereas in the original form

  scala -foo bip "bop bar" baz

will yield its arguments as given.

So lacking any good ideas and knowing something probably depends
on each way already, I made it work both ways.

3 files changed, 4 insertions, 0 deletions

diff --git a/test/pending/script/dashi.check b/test/pending/script/dashi.check
new file mode 100644
index 0000000000..c3cf137155
--- /dev/null
+++ b/test/pending/script/dashi.check
@@ -0,0 +1 @@
+test.bippy = dingus
diff --git a/test/pending/script/dashi.flags b/test/pending/script/dashi.flags
new file mode 100644
index 0000000000..5b46a61e4f
--- /dev/null
+++ b/test/pending/script/dashi.flags
@@ -0,0 +1 @@
+-i dashi/a.scala -e 'setBippy ; getBippy'
diff --git a/test/pending/script/dashi/a.scala b/test/pending/script/dashi/a.scala
new file mode 100644
index 0000000000..c4a07bf9ba
--- /dev/null
+++ b/test/pending/script/dashi/a.scala
@@ -0,0 +1,2 @@
+def setBippy = sys.props("test.bippy") = "dingus"
+def getBippy = println("test.bippy = " + sys.props("test.bippy"))