Bug 187605

Summary:	REGRESSION (-r226018): Shift-clicking to extend selection extends it from both ends if granularity is not character
Product:	WebKit	Reporter:	mitz
Component:	HTML Editing	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	ap, sam, webkit-bug-importer, wenson_hsieh
Priority:	P1	Keywords:	InRadar, Regression
Version:	Other
Hardware:	Unspecified
OS:	Unspecified
URL:	data:text/html,<div>one<br>two<br>three<br>four<br>five<br>six
See Also:	https://bugs.webkit.org/show_bug.cgi?id=164519

Description mitz 2018-07-12 10:02:10 PDT

To reproduce this bug, navigate to the URL, then triple-click the word “four”. Then Shift-click in the word “two”, then Shift-click in the word “one”. The selection extends to the words “five” and “six”, but it shouldn’t.

Comment 1 Radar WebKit Bug Importer 2018-07-12 10:07:30 PDT

<rdar://problem/42125941>

Comment 2 mitz 2018-07-12 19:34:14 PDT

I can reproduce this with r233395 in macOS High Sierra 10.13.6.

Comment 3 mitz 2018-07-12 19:44:48 PDT

It also reproduces with built-in Safari in that version of macOS, so it’s not a particularly recent regression.

Comment 4 mitz 2018-07-12 19:55:00 PDT

I was able to reproduce this all the way back to r226018

Comment 5 Wenson Hsieh 2018-07-12 20:15:24 PDT

Oddly, I'm unable to reproduce this on 10.13.4 (I tried both system Safari and STP 60).

Comment 6 mitz 2018-07-12 20:21:14 PDT

This comes down to the behavior of VisibleSelection::expandUsingGranularity, which makes it at least somewhat related to bug 164519.

Comment 7 mitz 2018-07-12 20:24:19 PDT

I wonder if there’s some extra global setting or preference that affects this (something like “smart copy and paste”).