env: Harden running commands in tmux so failures are obvious

Signed-off-by: Nathan Chancellor <nathan@kernel.org>

Author: nathanchance

configs/tmux/.tmux.conf

@@ -4,12 +4,12 @@ bind-key c new-window dbxe
 bind-key C new-window
 
 # open specific distrobox container using N
-bind-key N command-prompt -p "distrobox container:" "new-window 'dbxe %1'"
+bind-key N command-prompt -p "distrobox container:" "new-window 'dbxe %1; or exec fish -l'"
 bind-key E command-prompt -p "new ephemeral distrobox container:" "new-window 'dbxeph %1'"
 
 # run commands in either host or distrobox
-bind-key r command-prompt -p "run command (distrobox):" "new-window 'dbxe -- fish -c \"%1\"'"
-bind-key R command-prompt -p "run command (host):" "new-window '%1'"
+bind-key r command-prompt -p "run command (distrobox):" "new-window 'dbxe -- fish -c \"begin; %1; end; or exec fish -l\"; or exec fish -l'"
+bind-key R command-prompt -p "run command (host):" "new-window 'begin; %1; end; or exec fish -l'"
 
 # split panes using | and - (distrobox) and H and V (host)
 bind-key | split-window -h dbxe

python/scripts/tmxrun.py

@@ -49,9 +49,9 @@
 if args.detach:
     tmx_cmd.append('-d')
 
-CMD_STR = ' '.join(args.args)
+CMD_STR = f"begin; {' '.join(args.args)}; end; or exec fish -l"
 if mode == 'container':
-    CMD_STR = f"dbxe -- fish -c '{CMD_STR}'"
+    CMD_STR = f"dbxe -- fish -c '{CMD_STR}'; or exec fish -l"
 tmx_cmd.append(CMD_STR)
 
 lib.utils.run(tmx_cmd)