tdf#120593: properly handle tab pos identical to right indent

... otherwise it's counted without taking into account current column,
as well as TabsRelativeToIndent mode.

Change-Id: I7442f63d9d5c51c5a4d82094b49b8028f2b42b41
Reviewed-on: https://gerrit.libreoffice.org/61768
Tested-by: Jenkins
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>

svx/source/dialog/svxruler.cxx

@@ -2200,7 +2200,15 @@ void SvxRuler::ApplyTabs()
         if( mxRulerImpl->lMaxRightLogic != -1 &&
             mpTabs[nCoreIdx + TAB_GAP].nPos + Ruler::GetNullOffset() == nMaxRight )
         {
-            aTabStop.GetTabPos() = mxRulerImpl->lMaxRightLogic - lLogicNullOffset;
+            // Set tab pos exactly at the right indent
+            long nTmpLeftIndentLogic
+                = lAppNullOffset + (bRTL ? GetRightFrameMargin() : GetLeftFrameMargin());
+            if (mxRulerImpl->bIsTabsRelativeToIndent && mxParaItem)
+            {
+                nTmpLeftIndentLogic += bRTL ? mxParaItem->GetRight() : mxParaItem->GetLeft();
+            }
+            aTabStop.GetTabPos()
+                = mxRulerImpl->lMaxRightLogic - lLogicNullOffset - nTmpLeftIndentLogic;
         }
         else
         {