1 files changed, 12 insertions, 1 deletions

diff --git a/testes/utf8.lua b/testes/utf8.lua
index 0704782c..028995a4 100644
--- a/testes/utf8.lua
+++ b/testes/utf8.lua
@@ -3,6 +3,8 @@
 
 -- UTF-8 file
 
+global <const> *
+
 print "testing UTF-8 library"
 
 local utf8 = require'utf8'
@@ -134,7 +136,7 @@ do
   errorcodes("\xbfinvalid")
   errorcodes("αλφ\xBFα")
 
-  -- calling interation function with invalid arguments
+  -- calling iteration function with invalid arguments
   local f = utf8.codes("")
   assert(f("", 2) == nil)
   assert(f("", -1) == nil)
@@ -150,11 +152,20 @@ checkerror("position out of bounds", utf8.offset, "", 1, -1)
 checkerror("continuation byte", utf8.offset, "𦧺", 1, 2)
 checkerror("continuation byte", utf8.offset, "𦧺", 1, 2)
 checkerror("continuation byte", utf8.offset, "\x80", 1)
+checkerror("continuation byte", utf8.offset, "\x9c", -1)
 
 -- error in indices for len
 checkerror("out of bounds", utf8.len, "abc", 0, 2)
 checkerror("out of bounds", utf8.len, "abc", 1, 4)
 
+do  -- missing continuation bytes
+  -- get what is available
+  local p, e = utf8.offset("\xE0", 1)
+  assert(p == 1 and e == 1)
+  local p, e = utf8.offset("\xE0\x9e", -1)
+  assert(p == 1 and e == 2)
+end
+
 
 local s = "hello World"
 local t = {string.byte(s, 1, -1)}