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Re: [PATCH] Refactor LAYER_ID to be the one and only layer definition

 

John,

Please rebase your patch when you get a chance.  I just attempted to
apply it so I could do some testing and it no longer applies.  Sorry for
the headaches but I'm really busy.  I will apply it as soon as I get it
and do some testing.

Thanks,

Wayne

On 3/24/2017 8:54 AM, Jon Evans wrote:
> Hi Wayne,
> 
> Any feedback on this?
> 
> Thanks,
> Jon
> 
> On Wed, Mar 22, 2017 at 6:15 AM, Maciej Sumiński
> <maciej.suminski@xxxxxxx <mailto:maciej.suminski@xxxxxxx>> wrote:
> 
>     I have briefly tested the patch, no issues found. I have no objections
>     to the changes, but I will leave the final decision to Wayne.
> 
>     Regards,
>     Orson
> 
>     On 03/22/2017 03:51 AM, Jon Evans wrote:
>     > Hi Wayne, new patch attached.
>     >
>     > Thanks,
>     > Jon
>     >
>     > On Tue, Mar 21, 2017 at 9:28 AM, Wayne Stambaugh
>     <stambaughw@xxxxxxxxx <mailto:stambaughw@xxxxxxxxx>>
>     > wrote:
>     >
>     >> Jon,
>     >>
>     >> I just attempted to apply your patch and it no longer applies
>     cleanly.
>     >> Please rebase it when you get a chance.
>     >>
>     >> Thanks,
>     >>
>     >> Wayne
>     >>
>     >> On 3/16/2017 10:14 AM, Jon Evans wrote:
>     >>> Bump -- does anyone have time to look at this and report back if
>     there
>     >>> are any issues?  I'd like to get it merged so that I can feel
>     confident
>     >>> about doing more work on top of these changes.
>     >>>
>     >>> Thanks,
>     >>> Jon
>     >>>
>     >>> On Tue, Mar 14, 2017 at 6:05 PM, Wayne Stambaugh
>     <stambaughw@xxxxxxxxx <mailto:stambaughw@xxxxxxxxx>
>     >>> <mailto:stambaughw@xxxxxxxxx <mailto:stambaughw@xxxxxxxxx>>> wrote:
>     >>>
>     >>>     Hey Jon,
>     >>>
>     >>>     This is better than the giant enum concept and I'm willing
>     to accept
>     >>>     this.  It still lacks the type safety of the enum inheritance
>     >> solution.
>     >>>     I still see ints being cast to enums and enum bounds checking so
>     >> this is
>     >>>     less than ideal.  I would prefer to see some additional
>     testing so if
>     >>>     any one has time, please test this patch before we commit it.
>     >>>
>     >>>     Thanks,
>     >>>
>     >>>     Wayne
>     >>>
>     >>>     On 3/14/2017 3:09 PM, Jon Evans wrote:
>     >>>     > Hi Wayne,
>     >>>     >
>     >>>     > New patch attached.  Let me know what you think of this
>     approach.
>     >>>     >
>     >>>     > Thanks,
>     >>>     > Jon
>     >>>     >
>     >>>     > On Tue, Mar 14, 2017 at 10:40 AM, Jon Evans
>     <jon@xxxxxxxxxxxxx <mailto:jon@xxxxxxxxxxxxx>
>     >> <mailto:jon@xxxxxxxxxxxxx <mailto:jon@xxxxxxxxxxxxx>>
>     >>>     > <mailto:jon@xxxxxxxxxxxxx <mailto:jon@xxxxxxxxxxxxx>
>     <mailto:jon@xxxxxxxxxxxxx <mailto:jon@xxxxxxxxxxxxx>>>> wrote:
>     >>>     >
>     >>>     >     Hi John, that's basically what my first patch did, but
>     inside
>     >>>     one enum.
>     >>>     >
>     >>>     >     Hi Wayne, thanks for elaborating more, I see your point.
>     >>>     >
>     >>>     >     I am still not sure there is benefit to adding some
>     class to
>     >>>     handle
>     >>>     >     enum inheritance.
>     >>>     >     I think it would work fine to just chain multiple enums
>     >>>     together, as
>     >>>     >     was done before, but with some tweaks.
>     >>>     >
>     >>>     >     enum PCB_LAYER_ID
>     >>>     >     {
>     >>>     >         F_Cu = 0,
>     >>>     >         //...
>     >>>     >         PCB_LAYER_ID_COUNT
>     >>>     >     };
>     >>>     >
>     >>>     >     enum NETNAME_LAYER_ID
>     >>>     >     {
>     >>>     >         NETNAME_LAYER_ID_START = PCB_LAYER_ID_COUNT,
>     >>>     >         NETNAME_LAYER_ID_COUNT = NETNAME_LAYER_ID_START +
>     >>>     PCB_LAYER_ID_COUNT
>     >>>     >     };
>     >>>     >
>     >>>     >     enum GAL_LAYER_ID
>     >>>     >     {
>     >>>     >         GAL_LAYER_ID_START = NETNAME_LAYER_ID_COUNT,
>     >>>     >         //....
>     >>>     >     };
>     >>>     >
>     >>>     >     And so on for gerbview, eeschema, etc
>     >>>     >
>     >>>     >     That way the IDs will be unique and cover a contiguous
>     range,
>     >> so
>     >>>     >     functions that want to take any layer ID can just
>     check that
>     >>>     the ID
>     >>>     >     is >= 0 and < the end sentinel of the last enum.
>     >>>     >
>     >>>     >     Any concerns with this approach?
>     >>>     >
>     >>>     >
>     >>>     >     Best,
>     >>>     >     Jon
>     >>>     >
>     >>>     >     On Tue, Mar 14, 2017 at 10:29 AM, John Beard
>     >>>     <john.j.beard@xxxxxxxxx <mailto:john.j.beard@xxxxxxxxx>
>     <mailto:john.j.beard@xxxxxxxxx <mailto:john.j.beard@xxxxxxxxx>>
>     >>>     >     <mailto:john.j.beard@xxxxxxxxx
>     <mailto:john.j.beard@xxxxxxxxx>
>     >>>     <mailto:john.j.beard@xxxxxxxxx
>     <mailto:john.j.beard@xxxxxxxxx>>>> wrote:
>     >>>     >
>     >>>     >         Hi Jon,
>     >>>     >
>     >>>     >         Protocol Buffers has the same problem. Messages have a
>     >>>     unique number
>     >>>     >         for each field, but extensions to messages don't
>     know about
>     >>>     >         "siblings". A common thing [1] to so is reserve
>     IDs up to
>     >> 1000
>     >>>     >         for the
>     >>>     >         base message, and then messages start at offsets 1000,
>     >>>     2000, etc,
>     >>>     >         based on some in-house scheme.
>     >>>     >
>     >>>     >         It probably won't just "drop in" to KiCad due to fixed
>     >>>     arrays (I
>     >>>     >         think?), but this is certainly one way it has been
>     >>>     "solved" in the
>     >>>     >         real world, by Google, no less! It's a bit crusty to
>     >> manually
>     >>>     >         reserve
>     >>>     >         space, but the "enum inheritance" problem isn't
>     limited to
>     >>>     C++.
>     >>>     >
>     >>>     >         There's plenty of space in enums and I sincerely doubt
>     >>>     there is a
>     >>>     >         measurable benefit to forcing the compiler to use
>     shorter
>     >>>     integral
>     >>>     >         types anyway, so we could just say "0-9999" is "common
>     >> GAL",
>     >>>     >         "10000-19999" is Pcbnew, etc. Some work might be
>     needed to
>     >>>     handle
>     >>>     >         non-contiguous enums here. "10000 layers should be
>     enough
>     >> for
>     >>>     >         anyone",
>     >>>     >         right?
>     >>>     >
>     >>>     >         Just a thought, without any real consideration of the
>     >>>     >         consequences for
>     >>>     >         things like formats and so on.
>     >>>     >
>     >>>     >         Cheers,
>     >>>     >
>     >>>     >         John
>     >>>     >
>     >>>     >         [1]
>     >>>     >
>     >>>      https://developers.google.com/protocol-buffers/docs/proto#
>     <https://developers.google.com/protocol-buffers/docs/proto#>
>     >> choosing-extension-numbers
>     >>>     <https://developers.google.com/protocol-buffers/docs/
>     <https://developers.google.com/protocol-buffers/docs/>
>     >> proto#choosing-extension-numbers>
>     >>>     >
>     >>>      <https://developers.google.com/protocol-buffers/docs/
>     <https://developers.google.com/protocol-buffers/docs/>
>     >> proto#choosing-extension-numbers
>     >>>     <https://developers.google.com/protocol-buffers/docs/
>     <https://developers.google.com/protocol-buffers/docs/>
>     >> proto#choosing-extension-numbers>>
>     >>>     >
>     >>>     >         On Tue, Mar 14, 2017 at 10:08 PM, Jon Evans
>     >>>     <jon@xxxxxxxxxxxxx <mailto:jon@xxxxxxxxxxxxx>
>     <mailto:jon@xxxxxxxxxxxxx <mailto:jon@xxxxxxxxxxxxx>>
>     >>>     >         <mailto:jon@xxxxxxxxxxxxx
>     <mailto:jon@xxxxxxxxxxxxx> <mailto:jon@xxxxxxxxxxxxx
>     <mailto:jon@xxxxxxxxxxxxx>>>>
>     >> wrote:
>     >>>     >         > Hi Orson, Wayne,
>     >>>     >         >
>     >>>     >         > I looked at the "enum inheritance" thing some
>     more and I
>     >>>     don't
>     >>>     >         think it
>     >>>     >         > would be a good solution for our case.
>     >>>     >         >
>     >>>     >         > This technique lets you extend enum A with enum
>     B, and
>     >> have
>     >>>     >         functions f(A)
>     >>>     >         > and f(A or B), and you could continue making larger
>     >>>     enums that
>     >>>     >         contained
>     >>>     >         > smaller ones.
>     >>>     >         > But, if we maintain multiple enums (one for each
>     >>>     application,
>     >>>     >         plus one for
>     >>>     >         > GAL layers) I don't see how it would make anything
>     >> simpler,
>     >>>     >         because we would
>     >>>     >         > not be able to treat them as "sibling classes"
>     >>>     >         >
>     >>>     >         > Before I spend more time coding things I want to
>     get an
>     >> idea
>     >>>     >         of what your
>     >>>     >         > requirements are / what you would and would not
>     accept
>     >> as a
>     >>>     >         change in this
>     >>>     >         > area.  I misunderstood Wayne's earlier reply to
>     me and
>     >>>     thought
>     >>>     >         that a single
>     >>>     >         > enum would be accepted, but if not, I don't
>     currently
>     >>>     have a good
>     >>>     >         > understanding of what the concerns are with that
>     >> approach.
>     >>>     >         >
>     >>>     >         > Questions for Wayne, Orson, and others who care
>     about
>     >> this:
>     >>>     >         >
>     >>>     >         > 1) Is there any opposition to moving the layer
>     >> definitions
>     >>>     >         from GerbView and
>     >>>     >         > Eeschema into layers_id_colors_and_visibility.h?
>     >> (ignoring
>     >>>     >         whether they are
>     >>>     >         > merged into one enum for now)
>     >>>     >         >
>     >>>     >         > 2) Is there any opposition to ensuring that no
>     layer IDs
>     >>>     >         overlap across all
>     >>>     >         > applications?  To be clear, what I mean now is that
>     >>>     currently
>     >>>     >         GerbView draw
>     >>>     >         > layers occupy the same layer IDs as Pcbnew board
>     >> layers.  I
>     >>>     >         want to change
>     >>>     >         > it so that a layer ID (cast to integer) is
>     always unique
>     >>>     >         across all
>     >>>     >         > applications, unless it truly is the same layer
>     (i.e can
>     >> use
>     >>>     >         the same color
>     >>>     >         > settings, visibility settings, etc. as
>     GP_OVERLAY can
>     >> across
>     >>>     >         > GerbView/Pcbnew).
>     >>>     >         >
>     >>>     >         > 3) If the answers to both 1 and 2 are "no", can
>     you give
>     >>>     some
>     >>>     >         more details
>     >>>     >         > on why it's a bad idea to put all the layers in
>     the same
>     >>>     enum,
>     >>>     >         and based on
>     >>>     >         > that I will come back with a proposal on a
>     different way
>     >> of
>     >>>     >         doing it?
>     >>>     >         >
>     >>>     >         > Thanks,
>     >>>     >         > Jon
>     >>>     >         >
>     >>>     >         > On Mon, Mar 13, 2017 at 3:07 PM, Jon Evans
>     >>>     <jon@xxxxxxxxxxxxx <mailto:jon@xxxxxxxxxxxxx>
>     <mailto:jon@xxxxxxxxxxxxx <mailto:jon@xxxxxxxxxxxxx>>
>     >>>     >         <mailto:jon@xxxxxxxxxxxxx
>     <mailto:jon@xxxxxxxxxxxxx> <mailto:jon@xxxxxxxxxxxxx
>     <mailto:jon@xxxxxxxxxxxxx>>>>
>     >> wrote:
>     >>>     >         >>
>     >>>     >         >> Hi Orson,
>     >>>     >         >>
>     >>>     >         >> It's an interesting idea, I will have to look at it
>     >> more.
>     >>>     >         But, doesn't
>     >>>     >         >> this still allow the programmer to accidentally
>     overlap
>     >> two
>     >>>     >         enum values?  I
>     >>>     >         >> can add checks to prevent this from happening
>     elsewhere
>     >> in
>     >>>     >         the code, but it
>     >>>     >         >> seems less clean to me.
>     >>>     >         >>
>     >>>     >         >> Best,
>     >>>     >         >> -Jon
>     >>>     >         >>
>     >>>     >         >> On Mon, Mar 13, 2017 at 1:52 PM, Maciej Suminski
>     >>>     >         <maciej.suminski@xxxxxxx
>     <mailto:maciej.suminski@xxxxxxx> <mailto:maciej.suminski@xxxxxxx
>     <mailto:maciej.suminski@xxxxxxx>>
>     >>>     <mailto:maciej.suminski@xxxxxxx
>     <mailto:maciej.suminski@xxxxxxx> <mailto:maciej.suminski@xxxxxxx
>     <mailto:maciej.suminski@xxxxxxx>>>>
>     >>>     >         >> wrote:
>     >>>     >         >>>
>     >>>     >         >>> Hi,
>     >>>     >         >>>
>     >>>     >         >>> How about emulating enum inheritance [1]? I
>     suppose it
>     >>>     would
>     >>>     >         be the
>     >>>     >         >>> cleanest solution allowing us to clearly
>     specify what
>     >> kind
>     >>>     >         of layer is
>     >>>     >         >>> expected for certain methods. This is even
>     better kind
>     >> of
>     >>>     >         type checking.
>     >>>     >         >>>
>     >>>     >         >>> Cheers,
>     >>>     >         >>> Orson
>     >>>     >         >>>
>     >>>     >         >>> 1.
>     https://www.codeproject.com/kb/cpp/inheritenum.aspx
>     <https://www.codeproject.com/kb/cpp/inheritenum.aspx>
>     >>>     <https://www.codeproject.com/kb/cpp/inheritenum.aspx
>     <https://www.codeproject.com/kb/cpp/inheritenum.aspx>>
>     >>>     >       
>      <https://www.codeproject.com/kb/cpp/inheritenum.aspx
>     <https://www.codeproject.com/kb/cpp/inheritenum.aspx>
>     >>>     <https://www.codeproject.com/kb/cpp/inheritenum.aspx
>     <https://www.codeproject.com/kb/cpp/inheritenum.aspx>>>
>     >>>     >         >>>
>     >>>     >         >>> On 03/13/2017 02:50 PM, Jon Evans wrote:
>     >>>     >         >>> > Hi Wayne,
>     >>>     >         >>> >
>     >>>     >         >>> > I understand this might seem like too big a
>     change.
>     >>>     >         >>> > Here is what I was thinking when I thought that
>     >>>     combining
>     >>>     >         everything
>     >>>     >         >>> > would
>     >>>     >         >>> > be a good solution.
>     >>>     >         >>> >
>     >>>     >         >>> > - If there is more than one enum, then
>     functions that
>     >>>     >         consume data from
>     >>>     >         >>> > more than one app (i.e. things in
>     common/GAL) have
>     >>>     to cast
>     >>>     >         to int, so
>     >>>     >         >>> > you
>     >>>     >         >>> > lose type checking that the enum gives you
>     for free
>     >> (or
>     >>>     >         your type
>     >>>     >         >>> > checking
>     >>>     >         >>> > gets more complicated, because the range of
>     valid
>     >> values
>     >>>     >         is different
>     >>>     >         >>> > for
>     >>>     >         >>> > each application)
>     >>>     >         >>> >
>     >>>     >         >>> > - If there is more than one enum, it's easier to
>     >>>     duplicate
>     >>>     >         layers for
>     >>>     >         >>> > no
>     >>>     >         >>> > good reason (i.e. GerbView and Pcbnew have
>     different
>     >>>     layer
>     >>>     >         ids for
>     >>>     >         >>> > "grid"
>     >>>     >         >>> > right now)
>     >>>     >         >>> >
>     >>>     >         >>> > - I want to combine the color settings for all
>     >>>     >         applications under the
>     >>>     >         >>> > hood
>     >>>     >         >>> > (users will still be able to configure different
>     >> colors
>     >>>     >         for each
>     >>>     >         >>> > application).  This change will let color
>     settings
>     >> take
>     >>>     >         LAYER_ID
>     >>>     >         >>> > instead of
>     >>>     >         >>> > int, and there will only be one key/value
>     mapping of
>     >>>     >         colors -- no more
>     >>>     >         >>> > difference between "GetLayerColor" and
>     >> "GetItemColor".
>     >>>     >         There will be
>     >>>     >         >>> > no
>     >>>     >         >>> > clashes between the meaning of a layer id
>     (int type)
>     >>>     >         between different
>     >>>     >         >>> > applications.
>     >>>     >         >>> >
>     >>>     >         >>> > - Bringing Eeschema into this now is just early
>     >>>     groundwork
>     >>>     >         for Eeschema
>     >>>     >         >>> > GAL
>     >>>     >         >>> > port (as well as unified color settings)
>     >>>     >         >>> >
>     >>>     >         >>> > If you will not accept this change, I have
>     to think
>     >>>     about
>     >>>     >         a different
>     >>>     >         >>> > proposal that will make the different layer
>     types in
>     >>>     different
>     >>>     >         >>> > applications
>     >>>     >         >>> > a bit more manageable than they are today.  I
>     >> understand
>     >>>     >         how having one
>     >>>     >         >>> > giant enum for LAYER_ID seems more
>     complicated, I'm
>     >> just
>     >>>     >         worried that
>     >>>     >         >>> > having several different enums will make the
>     code
>     >> that
>     >>>     >         consumes
>     >>>     >         >>> > LAYER_ID
>     >>>     >         >>> > more complicated, especially if the applications
>     >> become
>     >>>     >         more integrated
>     >>>     >         >>> > with each other and start sharing more code.
>     >>>     >         >>> >
>     >>>     >         >>> > Best,
>     >>>     >         >>> > Jon
>     >>>     >         >>> >
>     >>>     >         >>> > On Mon, Mar 13, 2017 at 8:21 AM, Wayne Stambaugh
>     >>>     >         <stambaughw@xxxxxxxxx
>     <mailto:stambaughw@xxxxxxxxx> <mailto:stambaughw@xxxxxxxxx
>     <mailto:stambaughw@xxxxxxxxx>>
>     >>>     <mailto:stambaughw@xxxxxxxxx <mailto:stambaughw@xxxxxxxxx>
>     <mailto:stambaughw@xxxxxxxxx <mailto:stambaughw@xxxxxxxxx>>>>
>     >>>     >         >>> > wrote:
>     >>>     >         >>> >
>     >>>     >         >>> >> Jon,
>     >>>     >         >>> >>
>     >>>     >         >>> >> I misunderstood your original intent.  I
>     don't think
>     >>>     >         cluttering the
>     >>>     >         >>> >> board layer enums with all of the virtual
>     layer and
>     >>>     >         schematic layer
>     >>>     >         >>> >> enums is a good idea.  It just seems like
>     overkill
>     >> to
>     >>>     >         me.  I thought
>     >>>     >         >>> >> you
>     >>>     >         >>> >> were going to create a separate enum for
>     virtual
>     >> board
>     >>>     >         layers.  You
>     >>>     >         >>> >> could always start the virtual board layer
>     enums
>     >>>     from the
>     >>>     >         last board
>     >>>     >         >>> >> layer enum if you need unique enums.  I
>     would also
>     >>>     prefer the
>     >>>     >         >>> >> schematic
>     >>>     >         >>> >> layer enums be separate from the board
>     layer enums
>     >> for
>     >>>     >         clarity.
>     >>>     >         >>> >> Anyone
>     >>>     >         >>> >> else have any thoughts on this?
>     >>>     >         >>> >>
>     >>>     >         >>> >> Cheers,
>     >>>     >         >>> >>
>     >>>     >         >>> >> Wayne
>     >>>     >         >>> >>
>     >>>     >         >>> >> On 3/12/2017 11:24 PM, Jon Evans wrote:
>     >>>     >         >>> >>> Hi all,
>     >>>     >         >>> >>>
>     >>>     >         >>> >>> Per the other thread, this patch unifies
>     the layer
>     >>>     >         definitions
>     >>>     >         >>> >>> between
>     >>>     >         >>> >>> Pcbnew, GerbView, and Eeschema.  It
>     removes the
>     >>>     need for
>     >>>     >         >>> >>> ITEM_GAL_LAYER
>     >>>     >         >>> >>> and some other macros, and it will
>     simplify the
>     >>>     >         implementation of
>     >>>     >         >>> >>> cross-application color themes and using
>     GAL in
>     >>>     multiple
>     >>>     >         >>> >>> applications.
>     >>>     >         >>> >>>
>     >>>     >         >>> >>> Note that this patch introduces some temporary
>     >>>     weirdness
>     >>>     >         in a few
>     >>>     >         >>> >>> places, such as in COLORS_DESIGN_SETTINGS
>     (there
>     >>>     is now
>     >>>     >         a single
>     >>>     >         >>> >>> array
>     >>>     >         >>> >>> for color storage, but it's still referred
>     to by
>     >>>     two sets of
>     >>>     >         >>> >>> getters/setters).  This is because I wanted to
>     >>>     keep this
>     >>>     >         refactor as
>     >>>     >         >>> >>> simple as possible, as I plan to follow it
>     up with
>     >> an
>     >>>     >         overhaul of
>     >>>     >         >>> >>> color
>     >>>     >         >>> >>> settings when I share my color themes work.  I
>     >> didn't
>     >>>     >         want to do work
>     >>>     >         >>> >>> that I would soon end up getting rid of
>     anyway.
>     >>>     >         >>> >>>
>     >>>     >         >>> >>> Best,
>     >>>     >         >>> >>> Jon
>     >>>     >         >>> >>>
>     >>>     >         >>> >>>
>     >>>     >         >>> >>>
>     _______________________________________________
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>     >> developers
>     >>>     <https://launchpad.net/~kicad-developers
>     <https://launchpad.net/~kicad-developers>>
>     >>>     >         <https://launchpad.net/~kicad-developers
>     <https://launchpad.net/~kicad-developers>
>     >>>     <https://launchpad.net/~kicad-developers
>     <https://launchpad.net/~kicad-developers>>>
>     >>>     >         >>> >> More help   :
>     https://help.launchpad.net/ListHelp
>     <https://help.launchpad.net/ListHelp>
>     >>>     <https://help.launchpad.net/ListHelp
>     <https://help.launchpad.net/ListHelp>>
>     >>>     >         <https://help.launchpad.net/ListHelp
>     <https://help.launchpad.net/ListHelp>
>     >>>     <https://help.launchpad.net/ListHelp
>     <https://help.launchpad.net/ListHelp>>>
>     >>>     >         >>> >>
>     >>>     >         >>> >
>     >>>     >         >>> >
>     >>>     >         >>> >
>     >>>     >         >>> > _______________________________________________
>     >>>     >         >>> > Mailing list: https://launchpad.net/~kicad-
>     >> developers
>     >>>     <https://launchpad.net/~kicad-developers
>     <https://launchpad.net/~kicad-developers>>
>     >>>     >         <https://launchpad.net/~kicad-developers
>     <https://launchpad.net/~kicad-developers>
>     >>>     <https://launchpad.net/~kicad-developers
>     <https://launchpad.net/~kicad-developers>>>
>     >>>     >         >>> > Post to     :
>     kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>
>     >>>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>>
>     >>>     >         <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>
>     >>>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>>>
>     >>>     >         >>> > Unsubscribe : https://launchpad.net/~kicad-
>     >> developers
>     >>>     <https://launchpad.net/~kicad-developers
>     <https://launchpad.net/~kicad-developers>>
>     >>>     >         <https://launchpad.net/~kicad-developers
>     <https://launchpad.net/~kicad-developers>
>     >>>     <https://launchpad.net/~kicad-developers
>     <https://launchpad.net/~kicad-developers>>>
>     >>>     >         >>> > More help   :
>     https://help.launchpad.net/ListHelp
>     <https://help.launchpad.net/ListHelp>
>     >>>     <https://help.launchpad.net/ListHelp
>     <https://help.launchpad.net/ListHelp>>
>     >>>     >         <https://help.launchpad.net/ListHelp
>     <https://help.launchpad.net/ListHelp>
>     >>>     <https://help.launchpad.net/ListHelp
>     <https://help.launchpad.net/ListHelp>>>
>     >>>     >         >>> >
>     >>>     >         >>>
>     >>>     >         >>> _______________________________________________
>     >>>     >         >>> Mailing list:
>     https://launchpad.net/~kicad-developers
>     <https://launchpad.net/~kicad-developers>
>     >>>     <https://launchpad.net/~kicad-developers
>     <https://launchpad.net/~kicad-developers>>
>     >>>     >         <https://launchpad.net/~kicad-developers
>     <https://launchpad.net/~kicad-developers>
>     >>>     <https://launchpad.net/~kicad-developers
>     <https://launchpad.net/~kicad-developers>>>
>     >>>     >         >>> Post to     :
>     kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>
>     >>>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>>
>     >>>     >         <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>
>     >>>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>>>
>     >>>     >         >>> Unsubscribe :
>     https://launchpad.net/~kicad-developers
>     <https://launchpad.net/~kicad-developers>
>     >>>     <https://launchpad.net/~kicad-developers
>     <https://launchpad.net/~kicad-developers>>
>     >>>     >         <https://launchpad.net/~kicad-developers
>     <https://launchpad.net/~kicad-developers>
>     >>>     <https://launchpad.net/~kicad-developers
>     <https://launchpad.net/~kicad-developers>>>
>     >>>     >         >>> More help   :
>     https://help.launchpad.net/ListHelp
>     <https://help.launchpad.net/ListHelp>
>     >>>     <https://help.launchpad.net/ListHelp
>     <https://help.launchpad.net/ListHelp>>
>     >>>     >         <https://help.launchpad.net/ListHelp
>     <https://help.launchpad.net/ListHelp>
>     >>>     <https://help.launchpad.net/ListHelp
>     <https://help.launchpad.net/ListHelp>>>
>     >>>     >         >>
>     >>>     >         >>
>     >>>     >         >
>     >>>     >         >
>     >>>     >         > _______________________________________________
>     >>>     >         > Mailing list:
>     https://launchpad.net/~kicad-developers
>     <https://launchpad.net/~kicad-developers>
>     >>>     <https://launchpad.net/~kicad-developers
>     <https://launchpad.net/~kicad-developers>>
>     >>>     >         <https://launchpad.net/~kicad-developers
>     <https://launchpad.net/~kicad-developers>
>     >>>     <https://launchpad.net/~kicad-developers
>     <https://launchpad.net/~kicad-developers>>>
>     >>>     >         > Post to     :
>     kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>
>     >>>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>>
>     >>>     >         <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>
>     >>>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>>>
>     >>>     >         > Unsubscribe :
>     https://launchpad.net/~kicad-developers
>     <https://launchpad.net/~kicad-developers>
>     >>>     <https://launchpad.net/~kicad-developers
>     <https://launchpad.net/~kicad-developers>>
>     >>>     >         <https://launchpad.net/~kicad-developers
>     <https://launchpad.net/~kicad-developers>
>     >>>     <https://launchpad.net/~kicad-developers
>     <https://launchpad.net/~kicad-developers>>>
>     >>>     >         > More help   :
>     https://help.launchpad.net/ListHelp
>     <https://help.launchpad.net/ListHelp>
>     >>>     <https://help.launchpad.net/ListHelp
>     <https://help.launchpad.net/ListHelp>>
>     >>>     >         <https://help.launchpad.net/ListHelp
>     <https://help.launchpad.net/ListHelp>
>     >>>     <https://help.launchpad.net/ListHelp
>     <https://help.launchpad.net/ListHelp>>>
>     >>>     >         >
>     >>>     >
>     >>>     >
>     >>>     >
>     >>>
>     >>>
>     >>
>     >
>     >
>     >
>     > _______________________________________________
>     > Mailing list: https://launchpad.net/~kicad-developers
>     <https://launchpad.net/~kicad-developers>
>     > Post to     : kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>
>     > Unsubscribe : https://launchpad.net/~kicad-developers
>     <https://launchpad.net/~kicad-developers>
>     > More help   : https://help.launchpad.net/ListHelp
>     <https://help.launchpad.net/ListHelp>
>     >
> 
> 
> 
>     _______________________________________________
>     Mailing list: https://launchpad.net/~kicad-developers
>     <https://launchpad.net/~kicad-developers>
>     Post to     : kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>
>     Unsubscribe : https://launchpad.net/~kicad-developers
>     <https://launchpad.net/~kicad-developers>
>     More help   : https://help.launchpad.net/ListHelp
>     <https://help.launchpad.net/ListHelp>
> 
> 
> 
> 
> _______________________________________________
> Mailing list: https://launchpad.net/~kicad-developers
> Post to     : kicad-developers@xxxxxxxxxxxxxxxxxxx
> Unsubscribe : https://launchpad.net/~kicad-developers
> More help   : https://help.launchpad.net/ListHelp
> 


Follow ups

References