Modified the lineWidgetChanged test to also test for #2611

This makes it work correctly when the hanging indent is different from the indent unit.

As described in the comment, there was actually an intermediate selection being created, which clobbered the middle-click paste buffer and thus resulted in a $ being pasted instead of the actual content the user wanted. It's still a mystery why you couldn't repro it, but my guess is that due to some configuration (maybe in your window manager) your system wasn't updating the paste buffer as eagerly as Debian and Unity do by default.

Remove off-by-one in vim when head is further forward in the document than the anchor, where vim's selection becomes 1 less than CodeMirror's. This was originally done because the cursor showed past the anchor and looked like an additional character selection.

It's intended to match a literal `{`, but that must be escaped as it's
a meta character in JS regex.

Issue #2624

Issue #2622

Closes #2619

Issue #2604

Closes #2598

Fixes #2596

This reverts commit 4b047883.

Issue #2587

Issue #2587

Issue #2594

The issue can be seen on http://codemirror.net/mode/clike/index.html. In the C++ raw_string line, place the cursor after 'delim(' and type '('. Currently this causes a regexp error, which this patch fixes.

Issue #2562

This fixes non-empty selections having 2 highlights: the selection highlight
and the active-line highlight. Non-empty selections should only have the
selection highlight.