1042630 - Triple-clicking <li> element adds stray whitespace iff exactly one <li> inside the list

Status: NEW

(Core :: DOM: Selection, defect)

Description

[Ed Morley [:emorley]]

STR:
1) Find a bugzilla.mozilla.org bug that has just *one* person CCed
2) In the CC list triple click that person's email address
3) Paste somewhere

Expected:
The email address with no additional leading or trailing whitespace. eg:
'[e-mail]'

Actual:
Both leading and trailing whitespace, eg:
'\n
    foo@bar\n
'

Strangely, this doesn't occur if there are multiple people CCed to the bug.

Comment 1

[Ed Morley [:emorley]]

Attachment: Testcase

This testcase shows:
* whitespace being incorrectly added for single item lists
* multi-item lists working as expected
* slightly less whitespace being added if a single item list, and the markup has been condensed onto one line. (The newlines are no longer added, but still a 4 space leading whitespace).

Comment 2

[Ed Morley [:emorley]]

Tested using:
Mozilla/5.0 (Windows NT 6.3; WOW64; rv:34.0) Gecko/20100101 Firefox/34.0
Built from https://hg.mozilla.org/mozilla-central/rev/63f44b4968c2

Comment 3

[Ed Morley [:emorley]]

Reproducible with latest Nightly:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:60.0) Gecko/20100101 Firefox/60.0
Built from https://hg.mozilla.org/mozilla-central/rev/2c000486eac466da6623e4d7f7f1fd4e318f60e8