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now that mjn3 explained it to me, add documentation for the 3rd field in long opts

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Mike Frysinger 2005-05-11 00:02:39 +00:00
parent 00e76cb6b9
commit fb6d22c96c
1 changed files with 12 additions and 5 deletions
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17
libbb/getopt_ulflags.c
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@ -80,13 +80,20 @@ static const struct option bb_default_long_options[]
};
bb_applet_long_options = applet_long_options;
The first parameter is the long option that you would pass to
the applet (--verbose) in place of the short option (-v). The
second field determines whether the option has an argument.
The first parameter is the long option name that you would pass
to the applet (without the dashes).
The second field determines whether the option has an argument.
You can set this to 0, 1, or 2, or you can use the long named
defines of no_argument, required_argument, and optional_argument.
Just set the third argument to '0' or 'NULL'. The last argument
is simply the short option without the dash of course.
The third argument is used only when the long option does not
have a corresponding short option. In that case, it should be
an integer pointer. Otherwise (and normally), it should just
bet set to NULL.
The last argument is the corresponding short option (if there
is one of course).
Note: a good applet will make long options configurable via the
config process and not a required feature. The current standard