richedit: Got rid of ME_GetCharFwd and ME_GetCharBack.

These two functions were being used for simple operations, to get the
first or last character when pre-computing flags for splitting runs.

The call to ME_GetCharBack wasn't even giving the correct result, it
would always return -1 since it is being called with nPos of 0.

This patch simplifies the code by removing the functions and getting the
characters directly from the string.

dlls/riched20/editor.h

@@ -100,8 +100,6 @@ int ME_IsSplitable(const ME_String *s);
 int ME_FindNonWhitespaceV(const ME_String *s, int nVChar);
 int ME_FindWhitespaceV(ME_String *s, int nVChar);
 int ME_CallWordBreakProc(ME_TextEditor *editor, ME_String *str, INT start, INT code);
-int ME_GetCharFwd(const ME_String *s, int nPos); /* get char starting from start */
-int ME_GetCharBack(const ME_String *s, int nPos); /* get char starting from \0  */
 int ME_StrRelPos(const ME_String *s, int nVChar, int *pRelChars);
 int ME_StrRelPos2(const ME_String *s, int nVChar, int nRelChars);
 int ME_PosToVPos(const ME_String *s, int nPos);

dlls/riched20/run.c

@@ -406,38 +406,39 @@ ME_InsertRunAtCursor(ME_TextEditor *editor, ME_Cursor *cursor, ME_Style *style,
 
 /******************************************************************************
  * ME_UpdateRunFlags
- * 
+ *
  * Determine some of run attributes given its content (style, text content).
- * Some flags cannot be determined by this function (MERF_GRAPHICS, 
+ * Some flags cannot be determined by this function (MERF_GRAPHICS,
- * MERF_ENDPARA)     
+ * MERF_ENDPARA)
- */ 
+ */
 void ME_UpdateRunFlags(ME_TextEditor *editor, ME_Run *run)
 {
-  assert(run->nCharOfs != -1);
+  ME_String *strText = run->strText;
+  assert(run->nCharOfs >= 0);
 
   if (RUN_IS_HIDDEN(run) || run->nFlags & MERF_TABLESTART)
     run->nFlags |= MERF_HIDDEN;
   else
     run->nFlags &= ~MERF_HIDDEN;
 
-  if (ME_IsSplitable(run->strText))
+  if (ME_IsSplitable(strText))
     run->nFlags |= MERF_SPLITTABLE;
   else
     run->nFlags &= ~MERF_SPLITTABLE;
 
   if (!(run->nFlags & MERF_NOTEXT)) {
-    if (ME_IsWhitespaces(run->strText))
+    if (ME_IsWhitespaces(strText))
       run->nFlags |= MERF_WHITESPACE | MERF_STARTWHITE | MERF_ENDWHITE;
     else
     {
       run->nFlags &= ~MERF_WHITESPACE;
 
-      if (ME_IsWSpace(ME_GetCharFwd(run->strText,0)))
+      if (ME_IsWSpace(strText->szData[0]))
         run->nFlags |= MERF_STARTWHITE;
       else
         run->nFlags &= ~MERF_STARTWHITE;
 
-      if (ME_IsWSpace(ME_GetCharBack(run->strText,0)))
+      if (ME_IsWSpace(strText->szData[strText->nLen - 1]))
         run->nFlags |= MERF_ENDWHITE;
       else
         run->nFlags &= ~MERF_ENDWHITE;

dlls/riched20/string.c

@@ -186,32 +186,6 @@ void ME_StrDeleteV(ME_String *s, int nVChar, int nChars)
   s->nLen -= (end_ofs - nVChar);
 }
 
-int ME_GetCharFwd(const ME_String *s, int nPos)
-{
-  int nVPos = 0;
-
-  assert(nPos < s->nLen);
-  if (nPos)
-    nVPos = ME_StrRelPos2(s, nVPos, nPos);
-  
-  if (nVPos < s->nLen)
-    return s->szData[nVPos];
-  return -1;
-}
-
-int ME_GetCharBack(const ME_String *s, int nPos)
-{
-  int nVPos = s->nLen;
-
-  assert(nPos < s->nLen);
-  if (nPos)
-    nVPos = ME_StrRelPos2(s, nVPos, -nPos);
-  
-  if (nVPos < s->nLen)
-    return s->szData[nVPos];
-  return -1;
-}
-
 int ME_FindNonWhitespaceV(const ME_String *s, int nVChar) {
   int i;
   for (i = nVChar; i<s->nLen && ME_IsWSpace(s->szData[i]); i++)