[GRASS-dev] Re: doubt with single/double dashed flags from interface description

[andrea antonello]

My only guess here is that single character flags have a single dash
and multiple character flags a double dash?

Andrea

On Tue, May 24, 2011 at 9:12 PM, andrea antonello
<andrea.antonello at gmail.com> wrote:
> Hi all,
> I have a problem with the handling of flags in the interface description.
>
> Let's take for example pieces of r.watershed,
> The help tells me:
> [...]
>  -a   Use positive flow accumulation even for likely underestimates
>        See manual for a detailed description of flow accumulation output
>  --o   Allow output files to overwrite existing files
> [...]
>
> and the interface description:
> [...]
>
>        <flag name="a">
>                <label>
>                        Use positive flow accumulation even for likely underestimates
>                </label>
>                <description>
>                        See manual for a detailed description of flow accumulation output
>                </description>
>        </flag>
>        <flag name="overwrite">
>                <description>
>                        Allow output files to overwrite existing files
>                </description>
>        </flag>
> [...]
>
> I can't find a way to understand why the first has one single dash,
> while the overwrite flag needs two.
> Any hints?
>
> Thanks,
> Andrea
>