riched20: Only WM_CHAR respects text limit.

dlls/riched20/caret.c

@@ -441,7 +441,7 @@ void ME_InsertTextFromCursor(ME_TextEditor *editor, int nCursor,
 {
   const WCHAR *pos;
   ME_Cursor *p = NULL;
-  int freeSpace;
+  int oldLen;
 
   /* FIXME really HERE ? */
   if (ME_IsSelection(editor))
@@ -449,7 +449,7 @@ void ME_InsertTextFromCursor(ME_TextEditor *editor, int nCursor,
 
   /* FIXME: is this too slow? */
   /* Didn't affect performance for WM_SETTEXT (around 50sec/30K) */
-  freeSpace = editor->nTextLimit - ME_GetTextLength(editor);
+  oldLen = ME_GetTextLength(editor);
 
   /* text operations set modified state */
   editor->nModifyStep = 1;
@@ -459,7 +459,11 @@ void ME_InsertTextFromCursor(ME_TextEditor *editor, int nCursor,
   assert(nCursor>=0 && nCursor<editor->nCursors);
   if (len == -1)
     len = lstrlenW(str);
-  len = min(len, freeSpace);
+
+  /* grow the text limit to fit our text */
+  if(editor->nTextLimit < oldLen +len)
+    editor->nTextLimit = oldLen + len;
+
   while (len)
   {
     pos = str;

dlls/riched20/editor.c

@@ -2413,11 +2413,17 @@ static LRESULT RichEditWndProc_common(HWND hWnd, UINT msg, WPARAM wParam,
     }
     if (((unsigned)wstr)>=' ' || wstr=='\r' || wstr=='\t') {
       /* FIXME maybe it would make sense to call EM_REPLACESEL instead ? */
-      ME_Style *style = ME_GetInsertStyle(editor, 0);
-      ME_SaveTempStyle(editor);
-      ME_InsertTextFromCursor(editor, 0, &wstr, 1, style);
-      ME_ReleaseStyle(style);
-      ME_CommitUndo(editor);
+      /* WM_CHAR is restricted to nTextLimit */
+      int from, to;
+      ME_GetSelection(editor, &from, &to);
+      if(editor->nTextLimit > ME_GetTextLength(editor) - (to-from))
+      {
+        ME_Style *style = ME_GetInsertStyle(editor, 0);
+        ME_SaveTempStyle(editor);
+        ME_InsertTextFromCursor(editor, 0, &wstr, 1, style);
+        ME_ReleaseStyle(style);
+        ME_CommitUndo(editor);
+      }
       ME_UpdateRepaint(editor);
     }
     return 0;

dlls/riched20/tests/editor.c

@@ -1116,26 +1116,18 @@ static void test_EM_EXLIMITTEXT(void)
   SendMessage(hwndRichEdit, WM_SETTEXT, 0, (LPARAM) text);
   SendMessage(hwndRichEdit, WM_GETTEXT, 1024, (LPARAM) buffer);
   i = strlen(buffer);
-todo_wine {
   ok(10 == i, "expected 10 chars\n");
-}
   i = SendMessage(hwndRichEdit, EM_GETLIMITTEXT, 0, 0);
-todo_wine {
   ok(10 == i, "EM_EXLIMITTEXT: expected: %d, actual: %d\n", 10, i);
-}
 
   /* try inserting more text at end */
   i = SendMessage(hwndRichEdit, WM_CHAR, 'A', 0);
   ok(0 == i, "WM_CHAR wasn't processed");
   SendMessage(hwndRichEdit, WM_GETTEXT, 1024, (LPARAM) buffer);
   i = strlen(buffer);
-todo_wine {
   ok(10 == i, "expected 10 chars, got %i\n", i);
-}
   i = SendMessage(hwndRichEdit, EM_GETLIMITTEXT, 0, 0);
-todo_wine {
   ok(10 == i, "EM_EXLIMITTEXT: expected: %d, actual: %d\n", 10, i);
-}
 
   /* try inserting text at beginning */
   SendMessage(hwndRichEdit, EM_SETSEL, 0, 0);
@@ -1143,13 +1135,9 @@ todo_wine {
   ok(0 == i, "WM_CHAR wasn't processed");
   SendMessage(hwndRichEdit, WM_GETTEXT, 1024, (LPARAM) buffer);
   i = strlen(buffer);
-todo_wine {
   ok(10 == i, "expected 10 chars, got %i\n", i);
-}
   i = SendMessage(hwndRichEdit, EM_GETLIMITTEXT, 0, 0);
-todo_wine {
   ok(10 == i, "EM_EXLIMITTEXT: expected: %d, actual: %d\n", 10, i);
-}
 
   /* WM_CHAR is limited */
   textlimit = 1;