We're updating the issue view to help you get more done. 

Greek letter case conversion is broken

Description

Discovered while trying to update Chrome and v8's ICU to 62.1

u_strToLower converts U+1F8[8-F] to U+1D6[8-F] instead of U+1F8[0-7] and there are other misconversions.

Below is the full list of the regression matched against SpecialCasing.txt.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 input actual expected name 1f88 1d68 1f80 GREEK CAPITAL LETTER ALPHA WITH PSILI AND PROSGEGRAMMENI 1f89 1d69 1f81 GREEK CAPITAL LETTER ALPHA WITH DASIA AND PROSGEGRAMMENI 1f8a 1d6a 1f82 GREEK CAPITAL LETTER ALPHA WITH PSILI AND VARIA AND PROSGEGRAMMENI 1f8b 1d6b 1f83 GREEK CAPITAL LETTER ALPHA WITH DASIA AND VARIA AND PROSGEGRAMMENI 1f8c 1d6c 1f84 GREEK CAPITAL LETTER ALPHA WITH PSILI AND OXIA AND PROSGEGRAMMENI 1f8d 1d6d 1f85 GREEK CAPITAL LETTER ALPHA WITH DASIA AND OXIA AND PROSGEGRAMMENI 1f8e 1d6e 1f86 GREEK CAPITAL LETTER ALPHA WITH PSILI AND PERISPOMENI AND PROSGEGRAMMENI 1f8f 1d6f 1f87 GREEK CAPITAL LETTER ALPHA WITH DASIA AND PERISPOMENI AND PROSGEGRAMMENI 1f98 1d78 1f90 GREEK CAPITAL LETTER ETA WITH PSILI AND PROSGEGRAMMENI 1f99 1d79 1f91 GREEK CAPITAL LETTER ETA WITH DASIA AND PROSGEGRAMMENI 1f9a 1d7a 1f92 GREEK CAPITAL LETTER ETA WITH PSILI AND VARIA AND PROSGEGRAMMENI 1f9b 1d7b 1f93 GREEK CAPITAL LETTER ETA WITH DASIA AND VARIA AND PROSGEGRAMMENI 1f9c 1d7c 1f94 GREEK CAPITAL LETTER ETA WITH PSILI AND OXIA AND PROSGEGRAMMENI 1f9d 1d7d 1f95 GREEK CAPITAL LETTER ETA WITH DASIA AND OXIA AND PROSGEGRAMMENI 1f9e 1d7e 1f96 GREEK CAPITAL LETTER ETA WITH PSILI AND PERISPOMENI AND PROSGEGRAMMENI 1f9f 1d7f 1f97 GREEK CAPITAL LETTER ETA WITH DASIA AND PERISPOMENI AND PROSGEGRAMMENI 1fa8 1d88 1fa0 GREEK CAPITAL LETTER OMEGA WITH PSILI AND PROSGEGRAMMENI 1fa9 1d89 1fa1 GREEK CAPITAL LETTER OMEGA WITH DASIA AND PROSGEGRAMMENI 1faa 1d8a 1fa2 GREEK CAPITAL LETTER OMEGA WITH PSILI AND VARIA AND PROSGEGRAMMENI 1fab 1d8b 1fa3 GREEK CAPITAL LETTER OMEGA WITH DASIA AND VARIA AND PROSGEGRAMMENI 1fac 1d8c 1fa4 GREEK CAPITAL LETTER OMEGA WITH PSILI AND OXIA AND PROSGEGRAMMENI 1fad 1d8d 1fa5 GREEK CAPITAL LETTER OMEGA WITH DASIA AND OXIA AND PROSGEGRAMMENI 1fae 1d8e 1fa6 GREEK CAPITAL LETTER OMEGA WITH PSILI AND PERISPOMENI AND PROSGEGRAMMENI 1faf 1d8f 1fa7 GREEK CAPITAL LETTER OMEGA WITH DASIA AND PERISPOMENI AND PROSGEGRAMMENI 1fbc 1d9c 1fb3 GREEK CAPITAL LETTER ALPHA WITH PROSGEGRAMMENI 1fcc 1dac 1fc3 GREEK CAPITAL LETTER ETA WITH PROSGEGRAMMENI 1ffc 1ddc 1ff3 GREEK CAPITAL LETTER OMEGA WITH PROSGEGRAMMENI

Environment

Status

Assignee

Markus Scherer

Reporter

Jungshik Shin (신정식)

Time Needed

Hours

tracCc

andy,mark,markus,nrunge,roubert,srl

tracCreated

Jun 23, 2018, 7:35 PM

tracOwner

markus

tracProject

all

tracReporter

jungshik

tracResolution

fixed

tracReviewer

roubert

tracStatus

closed

tracWeeks

0.1

Components

Fix versions

Priority

major