Bash-4.1 distribution source

[thirdparty/bash.git] / lib / readline / text.c

diff --git a/lib/readline/text.c b/lib/readline/text.c
index 652b306b40b831cddef5eec7b57c5ad91666cc18..fc391894f18b14f90406a8aceb63259ecf120d55 100644 (file)
--- a/lib/readline/text.c
+++ b/lib/readline/text.c
@@ -67,6 +67,10 @@ static int _rl_insert_next_callback PARAMS((_rl_callback_generic_arg *));
 static int _rl_char_search_callback PARAMS((_rl_callback_generic_arg *));
 #endif
 
+/* The largest chunk of text that can be inserted in one call to
+   rl_insert_text.  Text blocks larger than this are divided. */
+#define TEXT_COUNT_MAX 1024
+
 /* **************************************************************** */
 /*                                                                 */
 /*                     Insert and Delete                           */
@@ -185,10 +189,13 @@ _rl_replace_text (text, start, end)
 {
   int n;
 
+  n = 0;
   rl_begin_undo_group ();
-  rl_delete_text (start, end + 1);
+  if (start <= end)
+    rl_delete_text (start, end + 1);
   rl_point = start;
-  n = rl_insert_text (text);
+  if (*text)
+    n = rl_insert_text (text);
   rl_end_undo_group ();
 
   return n;
@@ -570,6 +577,21 @@ rl_clear_screen (count, key)
   return 0;
 }
 
+int
+rl_skip_csi_sequence (count, key)
+     int count, key;
+{
+  int ch;
+
+  RL_SETSTATE (RL_STATE_MOREINPUT);
+  do
+    ch = rl_read_key ();
+  while (ch >= 0x20 && ch < 0x40);
+  RL_UNSETSTATE (RL_STATE_MOREINPUT);
+
+  return 0;
+}
+
 int
 rl_arrow_keys (count, c)
      int count, c;
@@ -707,7 +729,7 @@ _rl_insert_char (count, c)
          
   /* If we can optimize, then do it.  But don't let people crash
      readline because of extra large arguments. */
-  if (count > 1 && count <= 1024)
+  if (count > 1 && count <= TEXT_COUNT_MAX)
     {
 #if defined (HANDLE_MULTIBYTE)
       string_size = count * incoming_length;
@@ -735,11 +757,11 @@ _rl_insert_char (count, c)
       return 0;
     }
 
-  if (count > 1024)
+  if (count > TEXT_COUNT_MAX)
     {
       int decreaser;
 #if defined (HANDLE_MULTIBYTE)
-      string_size = incoming_length * 1024;
+      string_size = incoming_length * TEXT_COUNT_MAX;
       string = (char *)xmalloc (1 + string_size);
 
       i = 0;
@@ -751,7 +773,7 @@ _rl_insert_char (count, c)
 
       while (count)
        {
-         decreaser = (count > 1024) ? 1024 : count;
+         decreaser = (count > TEXT_COUNT_MAX) ? TEXT_COUNT_MAX : count;
          string[decreaser*incoming_length] = '\0';
          rl_insert_text (string);
          count -= decreaser;
@@ -761,14 +783,14 @@ _rl_insert_char (count, c)
       incoming_length = 0;
       stored_count = 0;
 #else /* !HANDLE_MULTIBYTE */
-      char str[1024+1];
+      char str[TEXT_COUNT_MAX+1];
 
-      for (i = 0; i < 1024; i++)
+      for (i = 0; i < TEXT_COUNT_MAX; i++)
        str[i] = c;
 
       while (count)
        {
-         decreaser = (count > 1024 ? 1024 : count);
+         decreaser = (count > TEXT_COUNT_MAX ? TEXT_COUNT_MAX : count);
          str[decreaser] = '\0';
          rl_insert_text (str);
          count -= decreaser;
@@ -1129,7 +1151,7 @@ int
 rl_delete_horizontal_space (count, ignore)
      int count, ignore;
 {
-  int start = rl_point;
+  int start;
 
   while (rl_point && whitespace (rl_line_buffer[rl_point - 1]))
     rl_point--;
@@ -1247,6 +1269,7 @@ rl_change_case (count, op)
   wchar_t wc, nwc;
   char mb[MB_LEN_MAX+1];
   int mlen;
+  size_t m;
   mbstate_t mps;
 #endif
 
@@ -1299,7 +1322,11 @@ rl_change_case (count, op)
 #if defined (HANDLE_MULTIBYTE)
       else
        {
-         mbrtowc (&wc, rl_line_buffer + start, end - start, &mps);
+         m = mbrtowc (&wc, rl_line_buffer + start, end - start, &mps);
+         if (MB_INVALIDCH (m))
+           wc = (wchar_t)rl_line_buffer[start];
+         else if (MB_NULLWCH (m))
+           wc = L'\0';
          nwc = (nop == UpCase) ? _rl_to_wupper (wc) : _rl_to_wlower (wc);
          if  (nwc != wc)       /*  just skip unchanged characters */
            {