(copy_text): Count down bytes_left properly

in multibyte to unibyte case.

diff --git a/src/insdel.c b/src/insdel.c
index 39c76d03dfed2421c326592977ce41e0b6379c9a..030b87385bdafb35a393368b36bcdb53009d4587 100644 (file)
--- a/src/insdel.c
+++ b/src/insdel.c
@@ -707,7 +707,7 @@ copy_text (from_addr, to_addr, nbytes,
          c = STRING_CHAR_AND_LENGTH (from_addr, bytes_left, thislen);
          *to_addr++ = SINGLE_BYTE_CHAR_P (c) ? c : (c & 0177) + 0200;
          from_addr += thislen;
-         bytes_left--;
+         bytes_left -= thislen;
          nchars++;
        }
       return nchars;