1433460 - Give the user a hint on what hitting "Enter" will do in jsterm

Status: RESOLVED DUPLICATE of bug 1427981

(DevTools :: Console, enhancement)

Description

[Nicolas Chevobbe [:nchevobbe]]

Attachment: DSyRIBWWsAARHg7.png large.png

When you are typing an expression in the jsterm, it is unclear what "Enter" will do.
Depending on what you entered, you might get a new line, or the expression can be evaluated.
This can be confusing for some people at worst, at best, people don't even know that Enter can create a new line and force themselves to use Shift + Enter.

It would be nice if we could show a hint to the user. Maybe like we do when the user hit the Tab key when there's no autocompletion (we show a `<- no result` label).
I attached an idea on how this could look.

Comment 1

[Nicolas Chevobbe [:nchevobbe]]

Here's how it's done for the "no result" case : https://searchfox.org/mozilla-central/rev/062e1cf551f5bf3f0af33671b818f75a55ac497b/devtools/client/webconsole/jsterm.js#1303