- {"default_hook", DT_STR, R_NONE, UL &DefaultHook, UL "~f %s !~P | (~P ~C %s)"},
+#ifdef DEBUG
+ {"debug_level", DT_NUM, R_NONE, UL &DebugLevel, "0" },
+ /*
+ ** .pp
+ ** Availability: debug
+ **
+ ** .pp
+ ** This variable specifies the current debug level and
+ ** may be used to increase or decrease the verbosity level
+ ** during runtime. It overrides the level given with the
+ ** \fT-d\fP command line option.
+ **
+ ** .pp
+ ** Currently, this number must be >= 0 and <= 5 and muttng
+ ** must be started with \fT-d\fP to enable debugging at all;
+ ** enabling at runtime is not possible.
+ */
+#endif
+ {"default_hook", DT_STR, R_NONE, UL &DefaultHook, "~f %s !~P | (~P ~C %s)"},