vis: use internal file to show lua errors

This means no event handlers are run for it, hence there is no chance
for recursive errors.

1 files changed, 1 insertions, 0 deletions

diff --git a/vis-core.h b/vis-core.h
index 4a5d3fc..5480589 100644
--- a/vis-core.h
+++ b/vis-core.h
@@ -139,6 +139,7 @@ struct Vis {
 	File *files;                         /* all files currently managed by this editor instance */
 	File *command_file;                  /* special internal file used to store :-command prompt */
 	File *search_file;                   /* special internal file used to store /,? search prompt */
+	File *error_file;                    /* special internal file used to store lua error messages */
 	Win *windows;                        /* all windows currently managed by this editor instance */
 	Win *win;                            /* currently active/focused window */
 	Win *message_window;                 /* special window to display multi line messages */