fix(tmux): Replace aliases that use empty flags with functions.

plugins/tmux/tmux.plugin.zsh

@@ -37,14 +37,43 @@ fi
 : ${ZSH_TMUX_UNICODE:=false}
 
 # ALIASES
-alias ta='tmux attach -t'
-alias tad='tmux attach -d -t'
-alias ts='tmux new-session -s'
 alias tl='tmux list-sessions'
 alias tksv='tmux kill-server'
-alias tkss='tmux kill-session -t'
 alias tmuxconf='$EDITOR $ZSH_TMUX_CONFIG'
 
+function ts() {
+  if [[ $@ == -* ]]; then
+    tmux new-session $@
+  else
+    tmux new-session ${@:+-s}$@
+  fi
+}
+
+function tkss() {
+  if [[ $@ == -* ]]; then
+    tmux kill-session $@
+  else
+    tmux kill-session ${@:+-t}$@
+  fi
+}
+
+function ta() {
+  if [[ $@ == -* ]]; then
+    tmux attach-session $@
+  else
+    tmux attach-session ${@:+-t}$@
+
+  fi
+}
+
+function tad() {
+  if [[ $@ == -* ]]; then
+    tmux attach-session -d $@
+  else
+    tmux attach-session -d ${@:+-t}$@
+  fi
+}
+
 # Determine if the terminal supports 256 colors
 if [[ $terminfo[colors] == 256 ]]; then
   export ZSH_TMUX_TERM=$ZSH_TMUX_FIXTERM_WITH_256COLOR