On 05/14/2013 06:27 AM, Roman Haefeli wrote:
On Die, 2013-05-14 at 12:08 +0100, colet.patrice wrote:
None of the softwares I know of have old versions able to open files
made with newer versions, even pd dont do this...
True. However, if you modify a patch without using new objects or any
new features of the new version, you will still be able to use that
patch in old versions of Pd. I think that is a pretty valuable property
of Pd.
Roman
If we take my revision of "Put" menu arrays to add jump-on-click and
bar graphs:
1) For the changes I made to [plot] it should be compatible in both
directions.
That is, if someone opens an old patch with a data-structure array in
revised
Pd, makes some changes, then saves it and opens it on old Pd, the old [plot]
code should ignore the extra symbol arguments used to specify the color.
2) For changes I made to arrays, if you edit and save in revised Pd then
open
in old Pd it will probably break. This is because I changed graph_array
to take
an A_GIMME, and the old graph_array specifies particular float and
symbol args.
For number 2, there isn't a good alternative. There's only one flag in
the args
for the "array" message-- while I can save the jump-on-click flag there,
I cannot
save an symbolic color name there, too.
Canvas args are A_GIMME, so I suppose I could append a list of symbolic
colors
for the arrays there in a backwards compatible way.
-Jonathan
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