vim-patch:7.4.1742

Problem:    strgetchar() does not work correctly.
Solution:   use mb_cptr2len().  Add a test. (Naruhiko Nishino)

5d18e0eca5

src/nvim/eval.c

@@ -15640,7 +15640,7 @@ static void f_strgetchar(typval_T *argvars, typval_T *rettv, FunPtr fptr)
         break;
       }
       charidx--;
-      byteidx += mb_char2len(str[byteidx]);
+      byteidx += mb_cptr2len(str + byteidx);
     }
   }
 }

src/nvim/version.c

@@ -701,7 +701,7 @@ static int included_patches[] = {
   // 1745 NA
   // 1744 NA
   // 1743 NA
-  // 1742,
+  1742,
   1741,
   1740,
   // 1739,