signal_handler_installed  789 maint/gnulib/lib/term-style-control.c   static bool signal_handler_installed = false;
signal_handler_installed  791 maint/gnulib/lib/term-style-control.c   if (!signal_handler_installed)
signal_handler_installed  803 maint/gnulib/lib/term-style-control.c       signal_handler_installed = true;