If you need to know if an option was set because of presetting actions
(configuration file processing or environment variables), versus a command
line entry versus one of the SET/DISABLE macros, then use this macro. It
will yield one of four values: OPTST_INIT, OPTST_SET,
OPTST_PRESET or OPTST_DEFINED. It is used thus:
switch (STATE_OPT( NAME )) {
case OPTST_INIT:
not-preset, set or on the command line. (unless CLEAR-ed)
case OPTST_SET:
option set via the SET_OPT_NAME() macro.
case OPTST_PRESET:
option set via an configuration file or environment variable
case OPTST_DEFINED:
option set via a command line option.
default:
cannot happen :)
}
This document was generated by Bruce Korb on August 21, 2015 using texi2html 1.82.