dockerdeb: fix incorrect number of shifts
From the comment, it appears that the original intent was to remove the first
two arguments, so this patch does just that.
make: use shell-command assignment instead of $(eval ...)
This is portable between BSD and GNU make.
As of this change, our Makefile appears to work in both BSD and GNU
make, with the caveat that the test-% and testpy-% wildcard rules
don't work on BSD make. That said, this still seems worthwhile because
it lets the buildbots work more consistently across platforms.
make: do assignment and export in a single statement
This is portable between GNU and BSD make, whereas doing the export on
its own line confuses BSD make.
make: alter how we compute compiler flags for setup.py
This is portable between BSD and GNU make. I'm not thrilled with how
it worked out, but it's portable and solves the problem.
revset: unindent "if True" block in sort()
It was there to make the previous patch readable.
revset: make sort() do dumb multi-pass sorting for multiple keys (
issue5218)
Our invert() function was too clever to not take length into account. I could
fix the problem by appending '\xff' as a terminator (opposite to '\0'), but
it turned out to be slower than simple multi-pass sorting.
New implementation is pretty straightforward, which just calls sort() from the
last key. We can do that since Python sort() is guaranteed to be stable. It
doesn't sound nice to call sort() multiple times, but actually it is faster.
That's probably because we have fewer Python codes in hot loop, and can avoid
heavy string and list manipulation.
revset #0: sort(0:10000, 'branch')
0) 0.412753
1) 0.393254
revset #1: sort(0:10000, '-branch')
0) 0.455377
1) 0.389191 85%
revset #2: sort(0:10000, 'date')
0) 0.408082
1) 0.376332 92%
revset #3: sort(0:10000, '-date')
0) 0.406910
1) 0.380498 93%
revset #4: sort(0:10000, 'desc branch user date rev')
0) 0.542996
1) 0.486397 89%
revset #5: sort(0:10000, '-desc -branch -user -date -rev')
0) 0.965032
1) 0.518426 53%