REPL -e "import util._" deemed useful

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From SO,
http://stackoverflow.com/a/18510229/1296806

Someone wanted to import packages on the command line. I said put it in a -i file. Hey, he didn't give me the green check! Anyway, I noticed this throws CNF: Main:

scala -e "import util._"

when it would actually be friendlier to handle the imports and drop into interactive mode.

It might be nice to have a way to do arbitrary -e exprs and drop into interactive mode. I guess we can't use -i for interactive.

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Imported From: https://issues.scala-lang.org/browse/SI-7806?orig=1
Reporter: @som-snytt
Affected Versions: 2.10.2
See #5254

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@gourlaysama said:
This sort of duplicates #5254. Or the issue could be about having a way to drop into the REPL after -e (keeping those classes on the classpath, or course...)

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@som-snytt said:
Upgraded to improvement for the feature request. Or is that a downgrade?

[som-snytt]

The workaround is -Xscript foo. For some reason, the default -Xscript Main disables wrapping. I can't focus on why, at the moment, because of all the domestic turmoil.

Dropping into REPL after -e would be an anti-feature.

Edit: the problem is that -Xscript indicates "code is script" and also specifies the entry point; there is no way to differentiate "find the entry point" or "create it". The problem would be mitigated by picking a more obscure default name than Main. On default, if search fails, then wrap.

[som-snytt]

The script runner is not the REPL, and failing to run is a bug, not an improvement.