Fix bug 7673 by reverting changes to BufferView::checkDepm

This reverts commit 210a4406 and a part of 5577e877.

src/BufferView.cpp

@@ -2400,9 +2400,12 @@ bool BufferView::checkDepm(Cursor & cur, Cursor & old)
 		return false;
 
 	d->cursor_ = cur;
+	
+	// we would rather not do this here, but it needs to be done before 
+ 	// the changed() signal is sent.
+	buffer_.updateBuffer();
 
-	cur.forceBufferUpdate();
+	buffer_.changed(true);
-	cur.screenUpdateFlags(Update::Force);
 	return true;
 }
 

src/Cursor.cpp

@@ -2048,12 +2048,8 @@ bool Cursor::upDownInText(bool up, bool & updateNeeded)
 
 			updateNeeded |= bv().checkDepm(dummy, *this);
 			updateTextTargetOffset();
-			if (updateNeeded) {
+			if (updateNeeded)
 				forceBufferUpdate();
-				// DEPM may have requested a screen update
-				this->screenUpdateFlags(
-					this->screenUpdate() | dummy.screenUpdate());
-			}
 		}
 		return false;
 	}
@@ -2078,8 +2074,7 @@ bool Cursor::upDownInText(bool up, bool & updateNeeded)
 			++dummy.pos();
 		if (bv().checkDepm(dummy, old)) {
 			updateNeeded = true;
-			// Make sure that cur gets back whatever happened to dummy (Lgb)
+			// Make sure that cur gets back whatever happened to dummy (Lgb) 
-			// This will include any screen update requested by DEPM
 			operator=(dummy);
 		}
 	} else {

src/Cursor.h

@@ -297,8 +297,6 @@ public:
 	 * Not using noScreenUpdate() should never be wrong.
 	 */
 	void noScreenUpdate() const;
-	///
-	Update::flags screenUpdate() const { return disp_.screenUpdate(); }
 	/// fix cursor in circumstances that should never happen.
 	/// \retval true if a fix occured.
 	bool fixIfBroken();

src/Text2.cpp

@@ -551,9 +551,6 @@ bool Text::setCursor(Cursor & cur, pit_type par, pos_type pos,
 	bool const update_needed = !tm.contains(par);
 	Cursor old = cur;
 	setCursorIntern(cur, par, pos, setfont, boundary);
-	// FIXME There is a chance that we'll miss a screen update here.
-	// If so, then do DEPM and then check if cur wants an update and
-	// go ahead and do it, if so.
 	return cur.bv().checkDepm(cur, old) || update_needed;
 }
 

src/Text3.cpp

@@ -648,12 +648,8 @@ void Text::dispatch(Cursor & cur, FuncRequest & cmd)
 				// provide it with two different cursors.
 				Cursor dummy = cur;
 				dummy.pos() = dummy.pit() = 0;
-				if (cur.bv().checkDepm(dummy, cur)) {
+				if (cur.bv().checkDepm(dummy, cur))
 					cur.forceBufferUpdate();
-					// DEPM may have requested a screen update
-					cur.screenUpdateFlags(
-						cur.screenUpdate() | dummy.screenUpdate());
-				}
 			}
 		}
 		break;
@@ -679,12 +675,8 @@ void Text::dispatch(Cursor & cur, FuncRequest & cmd)
 				Cursor dummy = cur;
 				dummy.pos() = cur.lastpos();
 				dummy.pit() = cur.lastpit();
-				if (cur.bv().checkDepm(dummy, cur)) {
+				if (cur.bv().checkDepm(dummy, cur))
 					cur.forceBufferUpdate();
-					// DEPM may have requested a screen update
-					cur.screenUpdateFlags(
-						cur.screenUpdate() | dummy.screenUpdate());
-				}
 			}
 		}
 		break;
@@ -867,12 +859,8 @@ void Text::dispatch(Cursor & cur, FuncRequest & cmd)
 				// provide it with two different cursors.
 				Cursor dummy = cur;
 				dummy.pos() = dummy.pit() = 0;
-				if (cur.bv().checkDepm(dummy, cur)) {
+				if (cur.bv().checkDepm(dummy, cur))
 					cur.forceBufferUpdate();
-					// DEPM may have requested a screen update
-					cur.screenUpdateFlags(
-						cur.screenUpdate() | dummy.screenUpdate());
-				}
 			}
 		}
 		break;
@@ -921,12 +909,8 @@ void Text::dispatch(Cursor & cur, FuncRequest & cmd)
 				Cursor dummy = cur;
 				dummy.pos() = cur.lastpos();
 				dummy.pit() = cur.lastpit();
-				if (cur.bv().checkDepm(dummy, cur)) {
+				if (cur.bv().checkDepm(dummy, cur))
 					cur.forceBufferUpdate();
-					// DEPM may have requested a screen update
-					cur.screenUpdateFlags(
-						cur.screenUpdate() | dummy.screenUpdate());
-				}
 			}
 		}
 		break;