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Re: File format incompatibility between nightlies and 5.1 (max_error)


Also reporter at https://bugs.launchpad.net/kicad/+bug/1831705

On Wed, 5 Jun 2019 at 14:36, Eeli Kaikkonen <eeli.kaikkonen@xxxxxxxxx> wrote:
> It was just found out (https://forum.kicad.info/t/bug-align-to-right-left-does-the-same-thing-on-bottom-side/17149/9) that commit 6bcf1839b7a6 added max_error which causes board to be incompatible between nightlies and 5.1. It's of course inevitable at some point, but I have asked earlier that developers would explicitly tell here or in the forum when that happens and how (I read the list but don't remember seeing a clear warning).
> It may be important to know; for example I can use nightlies at work but must be careful so that I can continue with stable if nightlies don't work.
> For this specific problem there would be several possible solutions (at least in my opinion) which would make the file format readable by 5.1.x, supposing that otherwise the board files can still be read and edited.
> 1. Write the key/value to the file only if it's something else than the default (i.e. changed explicitly).  This was the case with hatched zone fills.
> 2. Add the keyword to a bugfix release of 5.1 so that it can be ignored (again, supposing that it can be ignored at all). It would help if someone uses 5.1 nightlies or later the stable release.
> 3. Create some generic system by which KiCad can ignore some future keywords which aren't necessary to interpret.
> But over all I would ask information about incompatibilities. Thanks.
> Eeli Kaikkonen
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