tests: Solaris cmp complains about empty files, even with -s
When you compare an empty file, such as /dev/null, with a non-empty file,
Solaris cmp complains on stderr with "cmp: EOF on /dev/null", even if the
-s argument is present. GNU cmp makes the complaint, but silences it with
-s. We can change the pdiff utility to simply redirect stderr to /dev/null
so that we don't have to worry about this difference in the test files.
$ hg init
$ echo a > a
$ hg add a
$ hg commit -m test
Do we ever miss a sub-second change?:
$ for i in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20; do
> hg co -qC 0
> echo b > a
> hg st
> done
M a
M a
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M a
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M a
M a
M a
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M a
M a
M a
M a
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M a
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M a
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M a