Lcd wrote:
> On 25 July 2016, Yegappan Lakshmanan <[email protected]> wrote:
> > Hi,
> >
> > On Mon, Jul 25, 2016 at 12:27 AM, LCD 47 <[email protected]> wrote:
> > > On 24 July 2016, Yegappan Lakshmanan <[email protected]> wrote:
> > >> I am attaching a patch to enhance the getqflist/getloclist()
> > >> functions to return the title string and the
> > >> setqflist()/setloclist() functions to set the title string.
> > >>
> > >> After this patch is incorporated, it will be easy to add the
> > >> additional items (e.g. context, items, number, stack, etc.).
> > >>
> > >> The getqflist/setqflist functions now accept an optional dictionary
> > >> parameter. The dictionary parameter specifies which items to get
> > >> or set. If the {dict} argument is specified, then the getqflist
> > >> function returns a dictionary.
> > >
> > > Why a dictionary (where values are ignored), rather than a list,
> > > or a string of, say, comma-separated names? Or both?
> > >
> >
> > This is to be consistent between the getqflist()/getloclist() and
> > the setqflist()/setloclist() functions. In the setqflist() function,
> > the value of a dictionary key specifies the value to set. In the
> > getqflist() function, it specifies the value to return. For example,
> > the following call sets the quickfix title:
> >
> > call setqflist([], 'a', {'title' : 'example'})
> >
> > The following call returns the quickfix title:
> >
> > call getqflist({'title' : 1})
>
> The arguments of setqflist() are already different from those of
> getqflist(), so why does an extra argument has to be the same? Why not
> something like this:
>
> call getqflist('title,context,nr')
> or
> call getqflist(['title', 'context', 'nr'])
>
> vs.
>
> call setqflist(errors, 'r',
> \ { 'title': 'My preciousss', 'context': ctx, 'nr': -1 })
>
> (BTW, { 'nr': -1 } could mean last).
Although we can probably do a lot with a list of strings, there is a
tendency for builtin-functions to use a dictionary to pass optional
extra argumens through a dict. A list can only use "present" flags, a
dictionary can also use values for the arguments.
Usually the argument dicts are short: {'title': 1}.
If they do get long and all the values are one, you could use a list and
turn it into a dict. Hmm, we don't have a function for that...
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