3 files changed, 20 insertions, 0 deletions
diff --git a/vis-lua.c b/vis-lua.c
index a62daf8..ca36d2d 100644
--- a/vis-lua.c
+++ b/vis-lua.c
@@ -2019,6 +2019,12 @@ static int window_newindex(lua_State *L) {
 			}
 			lua_pop(L, 1);
 			return ret;
+		} else if (strcmp(key, "file") == 0 && lua_isstring(L, 3)) {
+			const char* filename = lua_tostring(L, 3);
+			if (!vis_window_change_file(win, filename)) {
+				return luaL_argerror(L, 3, "failed to open");
+			}
+			return 0;
 		}
 	}
 
diff --git a/vis.c b/vis.c
index 0c05558..dca90c1 100644
--- a/vis.c
+++ b/vis.c
@@ -505,6 +505,18 @@ bool vis_window_reload(Win *win) {
 	return true;
 }
 
+bool vis_window_change_file(Win *win, const char* filename) {
+	File *file = file_new(win->vis, filename);
+	if (!file)
+		return false;
+	file->refcount++;
+	if (win->file)
+		file_free(win->vis, win->file);
+	win->file = file;
+	view_reload(win->view, file->text);
+	return true;
+}
+
 bool vis_window_split(Win *original) {
 	vis_doupdates(original->vis, false);
 	Win *win = window_new_file(original->vis, original->file, UI_OPTION_STATUSBAR);
diff --git a/vis.h b/vis.h
index 8287a45..fcc1e05 100644
--- a/vis.h
+++ b/vis.h
@@ -209,6 +209,8 @@ bool vis_window_new(Vis*, const char *filename);
 bool vis_window_new_fd(Vis*, int fd);
 /** Reload the file currently displayed in the window from disk. */
 bool vis_window_reload(Win*);
+/** Change the file currently displayed in the window. */
+bool vis_window_change_file(Win*, const char *filename);
 /** Check whether closing the window would loose unsaved changes. */
 bool vis_window_closable(Win*);
 /** Close window, redraw user interface. */