source: patches/readline-5.2-fixes-3.patch@ a4819ed

readline-5.2

@@ -428 +428 @@
         return (1);
       if (c == 'n' || c == 'N' || c == RUBOUT)
         return (0);
-      if (c == ABORT_CHAR)
+      if (c == ABORT_CHAR || c < 0)
         _rl_abort_internal ();
       if (for_pager && (c == NEWLINE || c == RETURN))
         return (2);

readline-5.2

@@ -561 +561 @@
       wrap_offset = prompt_invis_chars_first_line = 0;
     }
 
+#if defined (HANDLE_MULTIBYTE)
+#define CHECK_INV_LBREAKS() \
+      do { \
+        if (newlines >= (inv_lbsize - 2)) \
+          { \
+            inv_lbsize *= 2; \
+            inv_lbreaks = (int *)xrealloc (inv_lbreaks, inv_lbsize * sizeof (int)); \
+            _rl_wrapped_line = (int *)xrealloc (_rl_wrapped_line, inv_lbsize * sizeof (int)); \
+          } \
+      } while (0)
+#else
 #define CHECK_INV_LBREAKS() \
       do { \
         if (newlines >= (inv_lbsize - 2)) \
@@ -569 +580 @@
             inv_lbreaks = (int *)xrealloc (inv_lbreaks, inv_lbsize * sizeof (int)); \
           } \
       } while (0)
+#endif /* HANDLE_MULTIBYTE */
 
 #if defined (HANDLE_MULTIBYTE)    
 #define CHECK_LPOS() \
@@ -1506 +1518 @@
     {
       /* Non-zero if we're increasing the number of lines. */
       int gl = current_line >= _rl_vis_botlin && inv_botlin > _rl_vis_botlin;
+      /* If col_lendiff is > 0, implying that the new string takes up more
+         screen real estate than the old, but lendiff is < 0, meaning that it
+         takes fewer bytes, we need to just output the characters starting
+         from the first difference.  These will overwrite what is on the
+         display, so there's no reason to do a smart update.  This can really
+         only happen in a multibyte environment. */
+      if (lendiff < 0)
+        {
+          _rl_output_some_chars (nfd, temp);
+          _rl_last_c_pos += _rl_col_width (nfd, 0, temp);
+          /* If nfd begins before any invisible characters in the prompt,
+             adjust _rl_last_c_pos to account for wrap_offset and set
+             cpos_adjusted to let the caller know. */
+          if (current_line == 0 && wrap_offset && ((nfd - new) <= prompt_last_invisible))
+            {
+              _rl_last_c_pos -= wrap_offset;
+              cpos_adjusted = 1;
+            }
+          return;
+        }
       /* Sometimes it is cheaper to print the characters rather than
          use the terminal's capabilities.  If we're growing the number
          of lines, make sure we actually cause the new line to wrap
          around on auto-wrapping terminals. */
-      if (_rl_terminal_can_insert && ((2 * col_temp) >= col_lendiff || _rl_term_IC) && (!_rl_term_autowrap || !gl))
+      else if (_rl_terminal_can_insert && ((2 * col_temp) >= col_lendiff || _rl_term_IC) && (!_rl_term_autowrap || !gl))
         {
           /* If lendiff > prompt_visible_length and _rl_last_c_pos == 0 and
              _rl_horizontal_scroll_mode == 1, inserting the characters with
@@ -1586 +1618 @@
           temp = nls - nfd;
           if (temp > 0)
             {
+              /* If nfd begins at the prompt, or before the invisible
+                 characters in the prompt, we need to adjust _rl_last_c_pos
+                 in a multibyte locale to account for the wrap offset and
+                 set cpos_adjusted accordingly. */
               _rl_output_some_chars (nfd, temp);
-              _rl_last_c_pos += _rl_col_width (nfd, 0, temp);;
+              if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+                {
+                  _rl_last_c_pos += _rl_col_width (nfd, 0, temp);
+                  if (current_line == 0 && wrap_offset &&  ((nfd - new) <= prompt_last_invisible))
+                    {
+                      _rl_last_c_pos -= wrap_offset;
+                      cpos_adjusted = 1;
+                    }
+                }
+              else
+                _rl_last_c_pos += temp;
             }
         }
       /* Otherwise, print over the existing material. */
@@ -1595 +1641 @@
         {
           if (temp > 0)
             {
+              /* If nfd begins at the prompt, or before the invisible
+                 characters in the prompt, we need to adjust _rl_last_c_pos
+                 in a multibyte locale to account for the wrap offset and
+                 set cpos_adjusted accordingly. */
               _rl_output_some_chars (nfd, temp);
               _rl_last_c_pos += col_temp;               /* XXX */
+              if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+                {
+                  if (current_line == 0 && wrap_offset &&  ((nfd - new) <= prompt_last_invisible))
+                    {
+                      _rl_last_c_pos -= wrap_offset;
+                      cpos_adjusted = 1;
+                    }
+                }
             }
           lendiff = (oe - old) - (ne - new);
           if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
@@ -1732 +1790 @@
   if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
     {
       dpos = _rl_col_width (data, 0, new);
-      if (dpos > prompt_last_invisible)         /* XXX - don't use woff here */
+      /* Use NEW when comparing against the last invisible character in the
+         prompt string, since they're both buffer indices and DPOS is a
+         desired display position. */
+      if (new > prompt_last_invisible)          /* XXX - don't use woff here */
         {
           dpos -= woff;
           /* Since this will be assigned to _rl_last_c_pos at the end (more
@@ -2380 +2441 @@
 
   if (end <= start)
     return 0;
+  if (MB_CUR_MAX == 1 || rl_byte_oriented)
+    return (end - start);
 
   memset (&ps, 0, sizeof (mbstate_t));
 

readline-5.2

@@ -133 +133 @@
     return (0);
 
   *key = ibuffer[pop_index++];
-
+#if 0
   if (pop_index >= ibuffer_len)
+#else
+  if (pop_index > ibuffer_len)
+#endif
     pop_index = 0;
 
   return (1);
@@ -250 +253 @@
       while (chars_avail--)
         {
           k = (*rl_getc_function) (rl_instream);
-          rl_stuff_char (k);
+          if (rl_stuff_char (k) == 0)
+            break;                      /* some problem; no more room */
           if (k == NEWLINE || k == RETURN)
             break;
         }
@@ -373 +377 @@
       RL_SETSTATE (RL_STATE_INPUTPENDING);
     }
   ibuffer[push_index++] = key;
+#if 0
   if (push_index >= ibuffer_len)
+#else
+  if (push_index > ibuffer_len)
+#endif
     push_index = 0;
 
   return 1;
@@ -513 +521 @@
      char *mbchar;
      int size;
 {
-  int mb_len = 0;
+  int mb_len, c;
   size_t mbchar_bytes_length;
   wchar_t wc;
   mbstate_t ps, ps_back;
 
   memset(&ps, 0, sizeof (mbstate_t));
   memset(&ps_back, 0, sizeof (mbstate_t));
-  
+
+  mb_len = 0;  
   while (mb_len < size)
     {
       RL_SETSTATE(RL_STATE_MOREINPUT);
-      mbchar[mb_len++] = rl_read_key ();
+      c = rl_read_key ();
       RL_UNSETSTATE(RL_STATE_MOREINPUT);
 
+      if (c < 0)
+        break;
+
+      mbchar[mb_len++] = c;
+
       mbchar_bytes_length = mbrtowc (&wc, mbchar, mb_len, &ps);
       if (mbchar_bytes_length == (size_t)(-1))
         break;          /* invalid byte sequence for the current locale */
@@ -564 +578 @@
 
   c = first;
   memset (mb, 0, mlen);
-  for (i = 0; i < mlen; i++)
+  for (i = 0; c >= 0 && i < mlen; i++)
     {
       mb[i] = (char)c;
       memset (&ps, 0, sizeof (mbstate_t));

readline-5.2

@@ -327 +327 @@
   rl_command_func_t *f;
 
   f = (rl_command_func_t *)NULL;
- 
- /* Translate the keys we do something with to opcodes. */
+
+  if (c < 0)
+    {
+      cxt->sflags |= SF_FAILED;
+      cxt->history_pos = cxt->last_found_line;
+      return -1;
+    }
+
+  /* Translate the keys we do something with to opcodes. */
   if (c >= 0 && _rl_keymap[c].type == ISFUNC)
     {
       f = _rl_keymap[c].function;

readline-5.2

@@ -146 +146 @@
           rl_restore_prompt ();
           rl_clear_message ();
           RL_UNSETSTATE(RL_STATE_NUMERICARG);
+          if (key < 0)
+            return -1;
           return (_rl_dispatch (key, _rl_keymap));
         }
     }

readline-5.2

@@ -645 +645 @@
   if ((cxt->flags & KSEQ_DISPATCHED) == 0)
     {
       nkey = _rl_subseq_getchar (cxt->okey);
+      if (nkey < 0)
+        {
+          _rl_abort_internal ();
+          return -1;
+        }
       r = _rl_dispatch_subseq (nkey, cxt->dmap, cxt->subseq_arg);
       cxt->flags |= KSEQ_DISPATCHED;
     }

readline-5.2

@@ -857 +857 @@
   c = rl_read_key ();
   RL_UNSETSTATE(RL_STATE_MOREINPUT);
 
+  if (c < 0)
+    return -1;
+
 #if defined (HANDLE_SIGNALS)
   if (RL_ISSTATE (RL_STATE_CALLBACK) == 0)
     _rl_restore_tty_signals ();
@@ -1520 +1523 @@
 
   mb_len = _rl_read_mbchar (mbchar, MB_LEN_MAX);
 
+  if (mb_len <= 0)
+    return -1;
+
   if (count < 0)
     return (_rl_char_search_internal (-count, bdir, mbchar, mb_len));
   else
@@ -1536 +1542 @@
   c = rl_read_key ();
   RL_UNSETSTATE(RL_STATE_MOREINPUT);
 
+  if (c < 0)
+    return -1;
+
   if (count < 0)
     return (_rl_char_search_internal (-count, bdir, c));
   else

readline-5.2

@@ -886 +886 @@
   RL_SETSTATE(RL_STATE_MOREINPUT);
   c = rl_read_key ();
   RL_UNSETSTATE(RL_STATE_MOREINPUT);
+
+  if (c < 0)
+    {
+      *nextkey = 0;
+      return -1;
+    }
+
   *nextkey = c;
 
   if (!member (c, vi_motion))
@@ -902 +909 @@
           RL_SETSTATE(RL_STATE_MOREINPUT);
           c = rl_read_key ();   /* real command */
           RL_UNSETSTATE(RL_STATE_MOREINPUT);
+          if (c < 0)
+            {
+              *nextkey = 0;
+              return -1;
+            }
           *nextkey = c;
         }
       else if (key == c && (key == 'd' || key == 'y' || key == 'c'))
@@ -1224 +1236 @@
 _rl_vi_callback_char_search (data)
      _rl_callback_generic_arg *data;
 {
+  int c;
 #if defined (HANDLE_MULTIBYTE)
-  _rl_vi_last_search_mblen = _rl_read_mbchar (_rl_vi_last_search_mbchar, MB_LEN_MAX);
+  c = _rl_vi_last_search_mblen = _rl_read_mbchar (_rl_vi_last_search_mbchar, MB_LEN_MAX);
 #else
   RL_SETSTATE(RL_STATE_MOREINPUT);
-  _rl_vi_last_search_char = rl_read_key ();
+  c = rl_read_key ();
   RL_UNSETSTATE(RL_STATE_MOREINPUT);
 #endif
 
+  if (c <= 0)
+    return -1;
+
+#if !defined (HANDLE_MULTIBYTE)
+  _rl_vi_last_search_char = c;
+#endif
+
   _rl_callback_func = 0;
   _rl_want_redisplay = 1;
 
@@ -1247 +1267 @@
 rl_vi_char_search (count, key)
      int count, key;
 {
+  int c;
 #if defined (HANDLE_MULTIBYTE)
   static char *target;
   static int tlen;
@@ -1293 +1314 @@
       else
         {
 #if defined (HANDLE_MULTIBYTE)
-          _rl_vi_last_search_mblen = _rl_read_mbchar (_rl_vi_last_search_mbchar, MB_LEN_MAX);
+          c = _rl_read_mbchar (_rl_vi_last_search_mbchar, MB_LEN_MAX);
+          if (c <= 0)
+            return -1;
+          _rl_vi_last_search_mblen = c;
 #else
           RL_SETSTATE(RL_STATE_MOREINPUT);
-          _rl_vi_last_search_char = rl_read_key ();
+          c = rl_read_key ();
           RL_UNSETSTATE(RL_STATE_MOREINPUT);
+          if (c < 0)
+            return -1;
+          _rl_vi_last_search_char = c;
 #endif
         }
     }
@@ -1467 +1494 @@
   c = rl_read_key ();
   RL_UNSETSTATE(RL_STATE_MOREINPUT);
 
+  if (c < 0)
+    return -1;
+
 #if defined (HANDLE_MULTIBYTE)
   if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
     c = _rl_read_mbstring (c, mb, mlen);
@@ -1485 +1515 @@
 
   _rl_vi_last_replacement = c = _rl_vi_callback_getchar (mb, MB_LEN_MAX);
 
+  if (c < 0)
+    return -1;
+
   _rl_callback_func = 0;
   _rl_want_redisplay = 1;
 
@@ -1516 +1549 @@
   else
     _rl_vi_last_replacement = c = _rl_vi_callback_getchar (mb, MB_LEN_MAX);
 
+  if (c < 0)
+    return -1;
+
   return (_rl_vi_change_char (count, c, mb));
 }
 
@@ -1650 +1686 @@
   ch = rl_read_key ();
   RL_UNSETSTATE(RL_STATE_MOREINPUT);
 
-  if (ch < 'a' || ch > 'z')
+  if (ch < 0 || ch < 'a' || ch > 'z')   /* make test against 0 explicit */
     {
       rl_ding ();
       return -1;
@@ -1702 +1738 @@
       rl_point = rl_mark;
       return 0;
     }
-  else if (ch < 'a' || ch > 'z')
+  else if (ch < 0 || ch < 'a' || ch > 'z')      /* make test against 0 explicit */
     {
       rl_ding ();
       return -1;