chore: update libghostty vendor

refs #276

1 files changed, 139 insertions, 0 deletions

diff --git a/vendor/libghostty-vt/include/ghostty/vt/grid_ref_tracked.h b/vendor/libghostty-vt/include/ghostty/vt/grid_ref_tracked.h
new file mode 100644
index 00000000..b56aefac
--- /dev/null
+++ b/vendor/libghostty-vt/include/ghostty/vt/grid_ref_tracked.h
@@ -0,0 +1,139 @@
+/**
+ * @file grid_ref_tracked.h
+ *
+ * Tracked terminal grid references.
+ */
+
+#ifndef GHOSTTY_VT_GRID_REF_TRACKED_H
+#define GHOSTTY_VT_GRID_REF_TRACKED_H
+
+#include <stdbool.h>
+#include <ghostty/vt/types.h>
+#include <ghostty/vt/grid_ref.h>
+#include <ghostty/vt/point.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * Tracked grid references are owned grid references that move with the
+ * terminal. See @ref grid_ref for the full overview of tracked and untracked
+ * grid reference behavior.
+ *
+ * @ingroup grid_ref
+ */
+
+/**
+ * Free a tracked grid reference.
+ *
+ * Passing NULL is allowed and has no effect. A tracked reference may be freed
+ * after the terminal that created it is freed.
+ *
+ * @param ref Tracked grid reference to free.
+ *
+ * @ingroup grid_ref
+ */
+GHOSTTY_API void ghostty_tracked_grid_ref_free(GhosttyTrackedGridRef ref);
+
+/**
+ * Return whether a tracked grid reference currently has a meaningful value.
+ *
+ * If the terminal that created the tracked reference has been freed, this
+ * returns false.
+ *
+ * @param ref Tracked grid reference.
+ * @return true if the reference currently has a meaningful value.
+ *
+ * @ingroup grid_ref
+ */
+GHOSTTY_API bool ghostty_tracked_grid_ref_has_value(
+    GhosttyTrackedGridRef ref);
+
+/**
+ * Convert a tracked grid reference to a point in the requested coordinate
+ * space.
+ *
+ * This is the tracked equivalent of ghostty_terminal_point_from_grid_ref().
+ * Unlike snapshotting, this does not expose an intermediate untracked
+ * GhosttyGridRef.
+ *
+ * A tracked reference is resolved against the terminal screen/page-list that
+ * currently owns the reference. If the terminal has switched between primary
+ * and alternate screens since the reference was created or last set, this may
+ * be different from the terminal's currently active screen.
+ *
+ * If the tracked reference no longer has a meaningful value, this returns
+ * GHOSTTY_NO_VALUE. GHOSTTY_NO_VALUE is also returned when the reference cannot
+ * be represented in the requested coordinate space, including after the
+ * terminal that created the tracked reference has been freed.
+ *
+ * @param ref Tracked grid reference.
+ * @param tag Coordinate space to convert into.
+ * @param[out] out_point On success, receives the coordinate. May be NULL.
+ * @return GHOSTTY_SUCCESS on success, GHOSTTY_INVALID_VALUE if ref is invalid,
+ *         or GHOSTTY_NO_VALUE if there is no representable value.
+ *
+ * @ingroup grid_ref
+ */
+GHOSTTY_API GhosttyResult ghostty_tracked_grid_ref_point(
+    GhosttyTrackedGridRef ref,
+    GhosttyPointTag tag,
+    GhosttyPointCoordinate *out_point);
+
+/**
+ * Move an existing tracked grid reference to a new terminal point.
+ *
+ * On success, the tracked reference begins tracking the new point and any prior
+ * "no value" state is cleared. On GHOSTTY_OUT_OF_MEMORY, the original tracked
+ * reference is left unchanged.
+ *
+ * The terminal must be the same terminal that created the tracked reference.
+ * The point is resolved against the terminal screen/page-list that is active at
+ * the time this function is called. If the terminal has switched between
+ * primary and alternate screens, this may move the tracked reference from one
+ * screen/page-list to the other.
+ *
+ * @param ref Tracked grid reference.
+ * @param terminal Terminal instance that owns the reference.
+ * @param point New point to track.
+ * @return GHOSTTY_SUCCESS on success, GHOSTTY_INVALID_VALUE if ref, terminal,
+ *         or point is invalid, or GHOSTTY_OUT_OF_MEMORY if allocation fails.
+ *
+ * @ingroup grid_ref
+ */
+GHOSTTY_API GhosttyResult ghostty_tracked_grid_ref_set(
+    GhosttyTrackedGridRef ref,
+    GhosttyTerminal terminal,
+    GhosttyPoint point);
+
+/**
+ * Snapshot a tracked grid reference into a regular GhosttyGridRef.
+ *
+ * The returned GhosttyGridRef is an untracked snapshot and has the same
+ * lifetime rules as ghostty_terminal_grid_ref(): it is only valid until the
+ * next terminal update. Snapshot immediately before calling
+ * ghostty_grid_ref_cell(), ghostty_grid_ref_row(),
+ * ghostty_grid_ref_graphemes(), ghostty_grid_ref_hyperlink_uri(), or
+ * ghostty_grid_ref_style().
+ *
+ * If the tracked reference no longer has a meaningful value, this returns
+ * GHOSTTY_NO_VALUE. This includes references whose owning terminal has been
+ * freed.
+ *
+ * @param ref Tracked grid reference.
+ * @param[out] out_ref On success, receives an untracked snapshot. May be NULL.
+ * @return GHOSTTY_SUCCESS on success, GHOSTTY_INVALID_VALUE if ref is invalid,
+ *         or GHOSTTY_NO_VALUE if the tracked location was discarded.
+ *
+ * @ingroup grid_ref
+ */
+GHOSTTY_API GhosttyResult ghostty_tracked_grid_ref_snapshot(
+    GhosttyTrackedGridRef ref,
+    GhosttyGridRef *out_ref);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GHOSTTY_VT_GRID_REF_TRACKED_H */