Updates to splitting of consecutive environments.

From Enrico.

(cherry picked from commit ee82dd604010d4c1bf250640a3df6d790ea08380)

src/BufferView.cpp

@@ -2203,9 +2203,14 @@ void BufferView::mouseEventDispatch(FuncRequest const & cmd0)
 		// inset (depending on cmd.x(), cmd.y()). This is needed for
 		// editing to fix bug 9628, but e.g. the context menu needs a
 		// cursor in front of the inset.
-		if ((inset->hasSettings() || !inset->contextMenuName().empty()) &&
+		if ((inset->hasSettings() || !inset->contextMenuName().empty()
+		     || inset->lyxCode() == SEPARATOR_CODE) &&
 		    cur.nextInset() != inset && cur.prevInset() == inset)
 			cur.posBackward();
+	} else if (cur.inTexted() && cur.pos()
+			&& cur.paragraph().isEnvSeparator(cur.pos() - 1)) {
+		// Always place cursor in front of a separator inset.
+		cur.posBackward();
 	}
 
 	// Put anchor at the same position.
@@ -2512,12 +2517,8 @@ bool BufferView::mouseSetCursor(Cursor & cur, bool select)
 	// FIXME: (2) if we had a working InsetText::notifyCursorLeaves,
 	// the leftinset bool would not be necessary (badcursor instead).
 	bool update = leftinset;
-	if (!do_selection && d->cursor_.inTexted()) {
+	if (!do_selection && d->cursor_.inTexted())
 		update |= checkDepm(cur, d->cursor_);
-		if (cur.inTexted() && cur.pos()
-			&& cur.paragraph().isEnvSeparator(cur.pos() - 1))
-		    cur.posBackward();
-	}
 
 	if (!do_selection)
 		d->cursor_.resetAnchor();

src/Row.cpp

@@ -66,8 +66,7 @@ double Row::Element::pos2x(pos_type const i) const
 
 	double w = 0;
 	//handle first the two bounds of the element
-	if (i == endpos && type != VIRTUAL
-		&& !(inset && inset->lyxCode() == SEPARATOR_CODE))
+	if (i == endpos && type != VIRTUAL)
 		w = isRTL() ? 0 : full_width();
 	else if (i == pos || type != STRING)
 		w = isRTL() ? full_width() : 0;

src/Text.cpp

@@ -1110,7 +1110,7 @@ bool Text::cursorForwardOneWord(Cursor & cur)
 	Paragraph const & par = cur.paragraph();
 
 	// Paragraph boundary is a word boundary
-	if (pos == lastpos) {
+	if (pos == lastpos || (pos + 1 == lastpos && par.isEnvSeparator(pos))) {
 		if (pit != cur.lastpit())
 			return setCursor(cur, pit + 1, 0);
 		else
@@ -1143,6 +1143,10 @@ bool Text::cursorForwardOneWord(Cursor & cur)
 			     ++pos;
 	}
 
+	// Don't skip a separator inset at the end of a paragraph
+	if (pos == lastpos && pos && par.isEnvSeparator(pos - 1))
+		--pos;
+
 	return setCursor(cur, pit, pos);
 }
 
@@ -1156,8 +1160,14 @@ bool Text::cursorBackwardOneWord(Cursor & cur)
 	Paragraph & par = cur.paragraph();
 
 	// Paragraph boundary is a word boundary
-	if (pos == 0 && pit != 0)
-		return setCursor(cur, pit - 1, getPar(pit - 1).size());
+	if (pos == 0 && pit != 0) {
+		Paragraph & prevpar = getPar(pit - 1);
+		pos = prevpar.size();
+		// Don't stop after an environment separator
+		if (pos && prevpar.isEnvSeparator(pos - 1))
+			--pos;
+		return setCursor(cur, pit - 1, pos);
+	}
 
 	if (lyxrc.mac_like_cursor_movement) {
 		// Skip through punctuation and spaces.

src/Text3.cpp

@@ -1661,6 +1661,9 @@ void Text::dispatch(Cursor & cur, FuncRequest & cmd)
 
 		tm->setCursorFromCoordinates(cur, cmd.x(), y);
 		cur.setTargetX(cmd.x());
+		// Don't allow selecting a separator inset
+		if (cur.pos() && cur.paragraph().isEnvSeparator(cur.pos() - 1))
+			cur.posBackward();
 		if (cmd.y() >= wh)
 			lyx::dispatch(FuncRequest(LFUN_DOWN_SELECT));
 		else if (cmd.y() < 0)

src/TextMetrics.cpp

@@ -1596,7 +1596,8 @@ bool TextMetrics::cursorEnd(Cursor & cur)
 			boundary = true;
 		else
 			--end;
-	}
+	} else if (cur.paragraph().isEnvSeparator(end-1))
+		--end;
 	return text_->setCursor(cur, cur.pit(), end, true, boundary);
 }