(bash,tmux) replace stmux alias with function and auto add git key

bash/bashrc

@@ -8,9 +8,6 @@ alias ls='lsd'
 alias ll="lsd -AlF"
 alias la="lsd -A"
 
-# Starts a new secure session with auto-wipe enabled
-alias stmux='ssh-agent tmux new-session \; set-hook client-detached "run-shell \"ssh-add -D\""'
-
 # Add an "alert" alias for long running commands.  Use like so:
 #   sleep 10; alert
 alias alert='notify-send --urgency=normal -i "$([ $? = 0 ] && echo terminal || echo error)" "$(history|tail -n1|sed -e '\''s/^\s*[0-9]\+\s*//;s/[;&|]\s*alert$//'\'')"'
@@ -239,6 +236,13 @@ parse_git_branch() {
     git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/(\1)/'
 }
 
+# Starts a new secure session with auto-wipe enabled
+stmux() {
+    ssh-agent sh -c "tmux new-session -s secure \
+        \; set-hook client-detached \"run-shell 'SSH_AUTH_SOCK=\$SSH_AUTH_SOCK ssh-add -D'\" \
+        \; send-keys \"ssh-add $GIT_KEY\" C-m"
+}
+
 export GOPATH=$HOME/go
 export PATH=$PATH:$GOPATH:$GOPATH/bin:/usr/local/go/bin
 export EDITOR=nvim