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made-conky-eval-useful.md (1122B)

      1 # Made conky eval useful
      2 
      3  Conky's eval seems rather useless, at least I couldn't get it do anything I wanted, so I added a little patch to make it more useful (to me):
      4 
      5 	diff --git a/src/conky.c b/src/conky.c
      6 	index 5848b61..8702cea 100644
      7 	--- a/src/conky.c
      8 	+++ b/src/conky.c
      9 	@@ -1103,7 +1103,9 @@ void generate_text_internal(char *p, int p_max_size,
     10 	 			}
     11 	 #endif /* IMLIB2 */
     12 	 			OBJ(eval) {
     13 	-				evaluate(obj->data.s, p, p_max_size);
     14 	+				char buffer[max_user_text];
     15 	+				evaluate(obj->data.s, buffer, sizeof(buffer));
     16 	+				evaluate(buffer, p, p_max_size);
     17 	 			}
     18 	 			OBJ(exec) {
     19 	 				print_exec(obj, p, p_max_size);
     20 
     21  Probably not the best thing ever, but seems to do the trick for me; now I can get the address of the interface connected to the big bad internets with (note: won't work correctly when multiple interfaces with default route):
     22 
     23 	${eval $${addr ${gw_iface}}}
     24 
     25 The [patch](http://inz.fi/p/raw/eval-fix.patch) applies against conky 1.9.0, unfortunately not against the heavily rewritten git master.
     26 
     27 **Update:** similar patch I made against the 1.10.x has been merged to upstream conky; yay!