Auto-punctuation should support closing brackets and quotes

[Michael Sheldon]

The auto-punctuation feature should be expanded to support closing brackets and quotes as well as inserting full-stops. For example typing the sentence:

Bob said "I like keyboard features (when they work

and then tapping Space twice should result in:

Bob said "I like keyboard features (when they work)."

<https://wiki.ubuntu.com/LanguageAndText#phone>: "Once it is implemented, the caption should be “Inserts a period, and any closing quotes or brackets, when you tap Space twice.”"

[Matthew Paul Thomas (mpt)]

The previous description suggested that brackets, quotes, and sentences should be completed with separate double spaces, and therefore that completed periods should always go outside quotes. This is common amongst software developers such as myself, and in en-UK; but in en-US, a following comma/period should go inside the quote, even if it doesn't strictly belong to the quote.
<http://blog.apastyle.org/apastyle/2011/08/punctuating-around-quotation-marks.html>
<http://www.thepunctuationguide.com/quotation-marks.html#adjacentpunctuation>
<http://www.grammar-monster.com/lessons/quotation_%28speech%29_marks_punctuation_in_or_out.htm>
<http://www.grammarbook.com/punctuation/quotes.asp>

Partly because some locales don't use strict nesting, and partly because it's just more convenient, everything unclosed should be closed together with the period.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.