commit fe0dcf4e2d945f528e2af9cbfc9d8eadb3b571bd
from: Omar Polo <op@omarpolo.com>
date: Tue Sep 29 13:27:21 2020 UTC

add an error handler

the default error handler violates the pledge "stdio" by trying to
read (and possibly also write after) some files.  Also, I don't like
my program to be randomly killed if I try to get class hints on a
window that doesn't have any.

commit - e573cb09321087dc40dc088a53a9e079a31ecfe5
commit + fe0dcf4e2d945f528e2af9cbfc9d8eadb3b571bd
blob - 9db19aa52b32d963822a25e3b440f17cfad7e25c
blob + 4deaff27e6ab5a1a8e4d28ce92a4b64fc10cd205
--- star-platinum.c
+++ star-platinum.c
@@ -161,6 +161,8 @@ main(int argc, char **argv)
 		return 1;
 	}
 
+	XSetErrorHandler(&error_handler);
+
 	root = DefaultRootWindow(d);
 
 	/* grab all the keys */
@@ -195,6 +197,13 @@ main(int argc, char **argv)
 
 /* xlib */
 
+int
+error_handler(Display *d, XErrorEvent *e)
+{
+	fprintf(stderr, "Xlib error %d\n", e->type);
+	return 1;
+}
+
 /* TODO: it should grab ALL POSSIBLE COMBINATIONS of `ignored_modifiers`! */
 void
 grabkey(struct key k)
blob - 445302b1c862912606adc693d2f237a3a02060b3
blob + 7949d625573a5c7b59f6c7643c44965fdfd74716
--- star-platinum.h
+++ star-platinum.h
@@ -83,6 +83,7 @@ void			 process_event(struct group*, XKeyEvent*);
 int			 group_match(struct group*, Window);
 
 /* xlib-related */
+int			 error_handler(Display*, XErrorEvent*);
 void			 grabkey(struct key);
 KeySym			 keycode_to_keysym(unsigned int);
 Window			 focused_window();