Remove unused code in coding.c

* src/coding.c (decode_eol): Remove unused code that handled the
case of coding->dst_object being nil.  Replace it with an
assertion.

diff --git a/src/coding.c b/src/coding.c
index e591bedc3e5bed8bd227b6b4fcf919cf9657f349..f5fe52e04c072736c5ec5c3f1516603cc614726d 100644 (file)
--- a/src/coding.c
+++ b/src/coding.c
@@ -6814,39 +6814,29 @@ decode_eol (struct coding_system *coding)
   else if (EQ (eol_type, Qdos))
     {
       ptrdiff_t n = 0;
+      ptrdiff_t pos = coding->dst_pos;
+      ptrdiff_t pos_byte = coding->dst_pos_byte;
+      ptrdiff_t pos_end = pos_byte + coding->produced - 1;
 
-      if (NILP (coding->dst_object))
-       {
-         /* Start deleting '\r' from the tail to minimize the memory
-            movement.  */
-         for (p = pend - 2; p >= pbeg; p--)
-           if (*p == '\r')
-             {
-               memmove (p, p + 1, pend-- - p - 1);
-               n++;
-             }
-       }
-      else
-       {
-         ptrdiff_t pos = coding->dst_pos;
-         ptrdiff_t pos_byte = coding->dst_pos_byte;
-         ptrdiff_t pos_end = pos_byte + coding->produced - 1;
+      /* This assertion is here instead of code, now deleted, that
+        handled the NILP case, which no longer happens with the
+        current codebase.  */
+      eassert (!NILP (coding->dst_object));
 
-         while (pos_byte < pos_end)
+      while (pos_byte < pos_end)
+       {
+         p = BYTE_POS_ADDR (pos_byte);
+         if (*p == '\r' && p[1] == '\n')
            {
-             p = BYTE_POS_ADDR (pos_byte);
-             if (*p == '\r' && p[1] == '\n')
-               {
-                 del_range_2 (pos, pos_byte, pos + 1, pos_byte + 1, 0);
-                 n++;
-                 pos_end--;
-               }
-             pos++;
-             if (coding->dst_multibyte)
-               pos_byte += BYTES_BY_CHAR_HEAD (*p);
-             else
-               pos_byte++;
+             del_range_2 (pos, pos_byte, pos + 1, pos_byte + 1, 0);
+             n++;
+             pos_end--;
            }
+         pos++;
+         if (coding->dst_multibyte)
+           pos_byte += BYTES_BY_CHAR_HEAD (*p);
+         else
+           pos_byte++;
        }
       coding->produced -= n;
       coding->produced_char -= n;