Improve Lua error reporting

Display Lua errors in a dedicated window/file. A typo or missing
dependency (e.g. lpeg) in visrc.lua will no longer silently fail
without any indication.

The Lua integration in view.h is not yet converted.

1 files changed, 5 insertions, 1 deletions

diff --git a/vis.h b/vis.h
index 477ffe4..f749a63 100644
--- a/vis.h
+++ b/vis.h
@@ -81,10 +81,14 @@ void vis_window_prev(Vis*);
 /* display a user prompt with a certain title and default text */
 void vis_prompt_show(Vis*, const char *title);
 
-/* display a message to the user */
+/* display a one line message to the user, will be hidden upon keypress */
 void vis_info_show(Vis*, const char *msg, ...);
 void vis_info_hide(Vis*);
 
+/* display an arbitrary long message in a special window/file */
+void vis_message_show(Vis*, const char *msg);
+void vis_message_hide(Vis*);
+
 /* these function operate on the currently focused window but make sure
  * that all windows which show the affected region are redrawn too. */
 void vis_insert(Vis*, size_t pos, const char *data, size_t len);