Hi all,
Off and on I have been directly comparing Jython's AST with Python's
AST and generally working towards making them as close to identical as
possible. There are a couple of places where I haven't "fixed" Jython
because it looks to me like Jython has slightly better offsets. One
example:
for a,b in c:
pass
The Tuple node "a,b" ends up with a col_offset of 0 (the position of
the "for") where Jython has the col_offset as 4 (the position of "a").
Jython's result is more consistent with other Tuple node col_offset
results.
I have a local patch that changes the CPython col_offset to match
Jython's, but before I submit a patch I thought I'd ask here if there
is support for this sort of change and if I should continue to find
col_offset and lineno results that look fishy to me, or should I just
change Jython's results to match (one way or another, things will be
much easier for me to test if they match).
Also, would this be a change that would be considered a backwards
incompatibility? In other words, would patches like this be allowed
in 2.6/3.1 or only in 2.7/3.2.
Regards,
-Frank
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