https://www.tcl-lang.org/ https://www.tcl-lang.org/ Many people have made micro Tcl’s too if you want something even lighter. It has a built in subst command

https://www.tcl-lang.org/ https://www.tcl-lang.org/ Many people have made micro Tcl’s too if you want something even lighter. It has a built in subst command no need for a template engine!