* include/ruby/oniguruma.h: Additional flag for characters that are titlecase.

* enc/unicode/case-folding.rb, casefold.h: Using above flag in data.
* enc/unicode.c: Marking capitalized character as unmodified if it is
  already titlecase.
* test/ruby/enc/test_case_mapping.rb: Tests for above functionality.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54229 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 8 insertions, 4 deletions

diff --git a/enc/unicode/case-folding.rb b/enc/unicode/case-folding.rb
index d309dd6d15..00258cde6a 100755
--- a/enc/unicode/case-folding.rb
+++ b/enc/unicode/case-folding.rb
@@ -190,7 +190,7 @@ class CaseFolding
 end
 
 class MapItem
-  attr_accessor :upper, :lower, :title
+  attr_accessor :upper, :lower, :title, :code
 
   def initialize(code, upper, lower, title)
     @code = code
@@ -242,15 +242,19 @@ class CaseMapping
       specials = []
       unless item.upper == item.title
         specials << item.title
-        flags += "|ST"
+        flags += '|ST'
+        if item.code == item.title
+          flags += '|IT'
+        end
+        
       end
       unless item.lower.nil? or item.lower==from or item.lower==to
         specials << item.lower
-        flags += "|SL"
+        flags += '|SL'
       end
       unless item.upper.nil? or item.upper==from or item.upper==to
         specials << item.upper
-        flags += "|SU"
+        flags += '|SU'
       end
       if specials.first
         flags += "|I(#{@specials_length})"