I had that exact same question.   Probably so...

On Wed, May 15, 2019 at 2:15 AM Marcel Taeumel <marcel.taeumel at hpi.de> wrote:
>
> We should check all possible line-end characters, right?
>
> Am 15.05.2019 00:53:20 schrieb commits at source.squeak.org <commits at source.squeak.org>:
>
> Chris Muller uploaded a new version of Morphic to project The Inbox:
> http://source.squeak.org/inbox/Morphic-cmm.1489.mcz
>
> ==================== Summary ====================
>
> Name: Morphic-cmm.1489
> Author: cmm
> Time: 14 May 2019, 5:52:52.33191 pm
> UUID: 7ac016ff-055b-4834-b3b3-35a7864215d0
> Ancestors: Morphic-pre.1488
>
> Fix TextEditor>>#hasMultipleLinesSelected to consider actual lines, instead of wrapped lines.
>
> =============== Diff against Morphic-pre.1488 ===============
>
> Item was changed:
> ----- Method: TextEditor>>hasMultipleLinesSelected (in category 'typing support') -----
> hasMultipleLinesSelected
> + ^ self selection includes: Character cr!
> -
> - ^ self hasSelection and: [self startBlock top < self="" stopblock="">
>
>
>