Preventing splitting string after backslash.

[katyo]

I fixed the behavior of splitting string. Now when we press Enter key, if we're after a backslash, creating new string will be prevented, so we obtain backslash-newline-separated (\ \n in c-style) string.

So, when we typed something like this: "some\str" … and hit RET after \ char, we obtain: "some\ str" … instead of default behavior: "some\"

• "str" … which is illegal…

Of course, my fix is safe. So, using backslashes for escaping is covered. Even you typed something like: "some\str" … and hit RET after second slash, you will have "some\"

• "str" … but if you type third slash after second and hit RET, you obtain "some\\ str".

[tamzinblake]

This is way too many commits for one pull request. Splitting it up into separate features, and turning on new features conditionally.

[katyo]

Oh, sorry. Now it can be done.

[tamzinblake]

Hangs emacs. Try:

var a = "foo \
"

If you hit enter after that last quote, emacs will hang. Looking into causes, fixes. Any thoughts?

Also, I'm not sure I like the default behavior of putting a backslash on the next line.

[tamzinblake]

Hmm... not your code. Regular js3-mode does that too. Going to have to look into that.

[katyo]

Maybe, more right behavior is putting backslash only when cursor was on backslash not after.