* enc/unicode.c: Handle DOTLESS_i by hand because it isn't involved in folding.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55164 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Wed May 25 19:07:19 2016  Martin Duerst  <duerst@it.aoyama.ac.jp>
+
+	* enc/unicode.c: Handle DOTLESS_i by hand because it isn't involved in folding.
+
 Wed May 25 18:30:53 2016  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* regparse.c (fetch_token_in_cc): raise error if given octal escaped

enc/unicode.c

@@ -701,7 +701,7 @@ onigenc_unicode_case_map(OnigCaseFoldType* flagP,
 	    const CodePointList3 *folded;
 
 	    if (code==I_WITH_DOT_ABOVE) {
-		if (flags&ONIGENC_CASE_DOWNCASE) {
+		if (flags&(ONIGENC_CASE_DOWNCASE|ONIGENC_CASE_FOLD)) {
 		    MODIFIED;
 		    code = 'i';
 		    if (!(flags&ONIGENC_CASE_FOLD_TURKISH_AZERI)) { /* make dot above explicit */
@@ -710,6 +710,10 @@ onigenc_unicode_case_map(OnigCaseFoldType* flagP,
 		    }
 		}
 	    }
+	    else if (code==DOTLESS_i) { /* handle this manually, because it isn't involved in folding */
+		if (flags&ONIGENC_CASE_UPCASE)
+		    MODIFIED, code = 'I';
+	    }
 	    else if ((folded = onigenc_unicode_fold_lookup(code)) != 0) { /* data about character found in CaseFold_11_Table */
 		if ((flags&ONIGENC_CASE_TITLECASE)                                 /* Titlecase needed, */
 		    && (OnigCaseFoldFlags(folded->n)&ONIGENC_CASE_IS_TITLECASE)) { /* but already Titlecase  */