I think the unexpected result is due to a space missing between * and 2 in the .dog definition.
Yes, when I corrected that, .dog gave me the correct result.
If I understood the 'new method' correctly, it would require help of an editor to define a new piece set in a PHP file.
No, the new method was provided to eliminate the need to make new set files. I have now written a subroutine that will do the job once you feed it the data. It is in the include file update-piece-set, and the subroutine is called update-piece-set. Just feed it the notation you will use. To make preparation of data easier, you may feed it all the data it needs in a single array. Each array element should be a single piece label or an array including the piece label first and the new notation second. Where a piece label is by itself, it will reuse the same label for the same piece. Where it comes paired with new notation, it will use the new notation for the piece and discard the old piece label.
This method allows the designer to write the FEN code using the original labels, but within the code, it will change the piece labels to the desired notation, and it will strip the $pieces array of all pieces not being used.
You may get data on what notation to use from the user. For each piece, just include an extra field on what notation to use for the piece. When it's left empty, use the original piece label.
Yes, when I corrected that, .dog gave me the correct result.
No, the new method was provided to eliminate the need to make new set files. I have now written a subroutine that will do the job once you feed it the data. It is in the include file update-piece-set, and the subroutine is called update-piece-set. Just feed it the notation you will use. To make preparation of data easier, you may feed it all the data it needs in a single array. Each array element should be a single piece label or an array including the piece label first and the new notation second. Where a piece label is by itself, it will reuse the same label for the same piece. Where it comes paired with new notation, it will use the new notation for the piece and discard the old piece label.
This method allows the designer to write the FEN code using the original labels, but within the code, it will change the piece labels to the desired notation, and it will strip the $pieces array of all pieces not being used.
You may get data on what notation to use from the user. For each piece, just include an extra field on what notation to use for the piece. When it's left empty, use the original piece label.