Fixed detect exists __git__ps1

.bashrc-extends

@@ -4,8 +4,9 @@ PS1+='`if [ $? = 0 ]; then echo "\[\033[30m\]0"; else echo "\[\033[31m\]1"; fi`'
 PS1+="\[\033[1;32m\]\u@$(hostname)\[\033[m\]" # user@server
 PS1+='\[\033[97m\]\[\033[41m\]\w\[\033[49m\]'
 
-if [ $(type -t __git_ps1) = "function" ]; then
-        PS1+='\[\033[34m\]$(__git_ps1) '
+$(compgen -c | grep __git_ps1 > /dev/null 2>&1)
+if [ $? -eq 0 ]; then
+    PS1+='\[\033[34m\]$(__git_ps1) '
 fi
 
 PS1+='\[\033[32m\]$'