Update isEmojiGroupCandidate() to the latest version of Unicode

[Myles C. Maxfield]

In the latest version of Unicode, many more emoji are allowed to join. Instead of checking each individual range, we should just check to see if the character is:

U+2640 FEMALE SIGN
U+2642 MALE SIGN
U+26F9 PERSON WITH BALL
U+2695 STAFF OF AESCULAPIUS
U+2696 SCALES
U+2708 AIRPLANE
U+2764 HEAVY BLACK HEART
The Unicode block is UBLOCK_MISCELLANEOUS_SYMBOLS_AND_PICTOGRAPHS
The Unicode block is UBLOCK_EMOTICONS
The Unicode block is UBLOCK_TRANSPORT_AND_MAP_SYMBOLS
The Unicode block is UBLOCK_SUPPLEMENTAL_SYMBOLS_AND_PICTOGRAPHS

Alternatively, instead of checking individual code points at all, we may wish to simply check if the block is UBLOCK_MISCELLANEOUS_SYMBOLS or UBLOCK_DINGBATS

[Radar WebKit Bug Importer]

<rdar://problem/30484020>

[Myles C. Maxfield]

Created attachment 301369 [details]
Patch

[Myles C. Maxfield]

Created attachment 301370 [details]
Patch

[Myles C. Maxfield]

Created attachment 301423 [details]
Patch

[Build Bot]

Comment on attachment 301423 [details]
Patch

Attachment 301423 [details] did not pass ios-sim-ews (ios-simulator-wk2):
Output: http://webkit-queues.webkit.org/results/3082376

New failing tests:
editing/deleting/delete-emoji.html

[Build Bot]

Created attachment 301432 [details]
Archive of layout-test-results from ews126 for ios-simulator-wk2

The attached test failures were seen while running run-webkit-tests on the ios-sim-ews.
Bot: ews126  Port: ios-simulator-wk2  Platform: Mac OS X 10.11.6

[Myles C. Maxfield]

Created attachment 301467 [details]
Patch

[WebKit Commit Bot]

Comment on attachment 301467 [details]
Patch

Clearing flags on attachment: 301467

Committed r213499: <http://trac.webkit.org/changeset/213499>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.

[Michael Catanzaro]

Hey Myles, the ICU_HEADERS_UNDERSTAND_SUPPLEMENTAL_SYMBOLS_AND_PICTOGRAPHS case is missing a return statement when if (useSupplementalSymbolsAndPictographs) is false! Bad!

[3479/5652] Building CXX object Source...ir/platform/graphics/FontCascade.cpp.o
In file included from ../../Source/WebCore/platform/graphics/FontCascade.cpp:27:0:
../../Source/WebCore/platform/text/CharacterProperties.h: In function ‘bool WebCore::isEmojiGroupCandidate(UChar32)’:
../../Source/WebCore/platform/text/CharacterProperties.h:62:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
[3483/5652] Building CXX object Source...m/graphics/ComplexTextController.cpp.o
In file included from ../../Source/WebCore/platform/graphics/ComplexTextController.cpp:28:0:
../../Source/WebCore/platform/text/CharacterProperties.h: In function ‘bool WebCore::isEmojiGroupCandidate(UChar32)’:
../../Source/WebCore/platform/text/CharacterProperties.h:62:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
[3746/5652] Building CXX object Source...WebCore.dir/rendering/RenderText.cpp.o
In file included from ../../Source/WebCore/rendering/RenderText.cpp:31:0:
../../Source/WebCore/platform/text/CharacterProperties.h: In function ‘bool WebCore::isEmojiGroupCandidate(UChar32)’:
../../Source/WebCore/platform/text/CharacterProperties.h:62:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

Problem is... they seem bogus.

[Michael Catanzaro]

(In reply to comment #10)
> Problem is... they seem bogus.

Whoops, I meant to delete that bit of the comment. I at first got confused and didn't notice the problem.

[Michael Catanzaro]

litherum:  mcatanzaro: the #else should be changed to an #endif

[Michael Catanzaro]

Created attachment 303819 [details]
Patch

[WebKit Commit Bot]

Comment on attachment 303819 [details]
Patch

Clearing flags on attachment: 303819

Committed r213616: <http://trac.webkit.org/changeset/213616>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.