Usability enhancements for Tmux

* Press 'q' to quit Tmux
* In case of errors, Tmux will wait for a keypress before closing a pane

tests/simulation/start-in-tmux.sh

@@ -24,6 +24,8 @@ if [[ "$USE_TMUX" != "no" ]]; then
 
   $TMUX_CMD new-session -s "${TMUX_SESSION_NAME}" -d
 
+  $TMUX_CMD bind-key -n q kill-session
+
   # maybe these should be moved to a user config file
   $TMUX_CMD set-option -t "${TMUX_SESSION_NAME}" history-limit 999999
   $TMUX_CMD set-option -t "${TMUX_SESSION_NAME}" remain-on-exit on
@@ -33,9 +35,7 @@ if [[ "$USE_TMUX" != "no" ]]; then
   $TMUX_CMD new-window -d -t "${TMUX_SESSION_NAME}" -n "sim"
   $TMUX_CMD kill-pane -t "${TMUX_SESSION_NAME}:0"
 
-  trap 'tmux kill-session -t "${TMUX_SESSION_NAME}"' SIGINT EXIT
-
-  $TMUX_CMD new-window -t "${TMUX_SESSION_NAME}" -n "start-script" "$PWD/start.sh"
+  $TMUX_CMD new-window -t "${TMUX_SESSION_NAME}" -n "start-script" "if ! $PWD/start.sh; then; read; tmux kill-session; fi"
   $TMUX_CMD select-window -t "${TMUX_SESSION_NAME}:start-script"
 
   $TMUX_CMD attach-session -t "${TMUX_SESSION_NAME}"

tests/simulation/start.sh

@@ -140,7 +140,7 @@ function run_cmd {
   if [[ "$USE_TMUX" == "yes" ]]; then
     echo "Starting node $i..."
     $TMUX_CMD select-window -t "${TMUX_SESSION_NAME}:sim"
-    $TMUX_CMD split-window -t "${TMUX_SESSION_NAME}" "$CMD"
+    $TMUX_CMD split-window -t "${TMUX_SESSION_NAME}" "if ! $CMD; then; read; fi"
     $TMUX_CMD select-layout -t "${TMUX_SESSION_NAME}:sim" tiled
   elif [[ "$USE_MULTITAIL" != "no" ]]; then
     if [[ "$i" == "$MASTER_NODE" ]]; then

vendor/nim-libbacktrace

@@ -1 +1 @@
-Subproject commit 35eeb035b2b8e1dc770efdf76a0e4c5f369d8a0a
+Subproject commit dc2c199d41dc90de75043d1ee4efe5e0323932bf