Argp User Customization

The way formatting of argp `--help' output may be controlled to some extent by a program's users, by setting the ARGP_HELP_FMT environment variable to a comma-separated list (whitespace is ignored) of the following tokens:

`dup-args'

`no-dup-args'

Turn duplicate-argument-mode on or off. In duplicate argument mode, if an option which accepts an argument has multiple names, the argument is shown for each name; otherwise, it is only shown for the first long option, and a note is emitted later so the user knows that it applies to the other names as well. The default is `no-dup-args', which is less consistent, but prettier.

`dup-args-note'

`no-dup-args-note'

Enable or disable the note informing the user of suppressed option argument duplication. The default is `dup-args-note'.

`short-opt-col=n'

Show the first short option in column n (default 2).

`long-opt-col=n'

Show the first long option in column n (default 6).

`doc-opt-col=n'

Show `documentation options' (see section Flags for Argp Options) in column n (default 2).

`opt-doc-col=n'

Show the documentation for options starting in column n (default 29).

`header-col=n'

Indent group headers (which document groups of options) to column n (default 1).

`usage-indent=n'

Indent continuation lines in `Usage:' messages to column n (default 12).

`rmargin=n'

Word wrap help output at or before column n (default 79).

Go to the first, previous, next, last section, table of contents.