Fix bug where deletion at line end indicated with point disappeared when text

inserted on line.
Ensure not using old data by clearing all positions - this was hiding problems
because deleted positions were still set.

1 files changed, 13 insertions, 0 deletions

diff --git a/src/PositionCache.cxx b/src/PositionCache.cxx
index 0104b8660..d36e3e629 100644
--- a/src/PositionCache.cxx
+++ b/src/PositionCache.cxx
@@ -116,6 +116,10 @@ void LineLayout::Free() noexcept {
 	bidiData.reset();
 }
 
+void LineLayout::ClearPositions() {
+	std::fill(&positions[0], &positions[maxLineLength + 2], 0.0f);
+}
+
 void LineLayout::Invalidate(ValidLevel validity_) noexcept {
 	if (validity > validity_)
 		validity = validity_;
@@ -301,6 +305,15 @@ Point LineLayout::PointFromPosition(int posInLine, int lineHeight, PointEnd pe)
 	return pt;
 }
 
+XYPOSITION LineLayout::XInLine(Sci::Position index) const noexcept {
+	// For positions inside line return value from positions
+	// For positions after line return last position + 1.0
+	if (index <= numCharsInLine) {
+		return positions[index];
+	}
+	return positions[numCharsInLine] + 1.0;
+}
+
 int LineLayout::EndLineStyle() const noexcept {
 	return styles[numCharsBeforeEOL > 0 ? numCharsBeforeEOL-1 : 0];
 }