From:
http://mail.openjdk.java.net/pipermail/kulla-dev/2017-March/001978.html

A couple of comments (on webrev.03) [of JDK-8177076]:

This help string has the wrong whitespace:

+ a variable declaration whose type is based on the type of the expression.\n\t\t\
+Shift-<tab> i\n\t\t\

The first \n\t\t\ should be \n\n.

Help strings should not mention <fix> anymore:

+Invalid <fix> character. Use "i" for auto-import or "v" for variable creation. For more information see:\n\
+ /help shortcuts

I suggest: Unexpected character after Shift-Tab. Use "i" …

I built your patch and tried it out. I like the new behavior very much.
The "Shift-Tab i" command is more friendly.

Thanks!

I noticed a couple of oddities.

First of all, "/help /set <Tab>" prints the "/set" subcommands, but "/help set <Tab>" does not.

jshell> /help /set <Tab>
editor feedback format mode prompt start truncation
jshell> /help set <Tab>
get information about jshell <==== YES, I THOUGHT I WAS DOING THAT?