René Scharfe [off-list ref] writes:
It's more convenient because it shows differences nicely, it's faster on
MinGW because we have a special implementation there based only on
shell-internal commands,...
This made me wonder why we are not using that "faster" one
everywhere, but it turns out that it depends on bash-ism "local",
which is perfectly fine when limited to MinGW but not safe to assume
in general.
...
With all sum(1) calls gone, remove the MinGW-specific implementation
from test-lib.sh as well.
[1] http://minnie.tuhs.org/cgi-bin/utree.pl?file=V3/man/man1/sum.1
[2] http://minnie.tuhs.org/cgi-bin/utree.pl?file=4.4BSD/usr/share/man/cat1/cksum.0
[3] http://pubs.opengroup.org/onlinepubs/9699919799/utilities/cksum.html
---
t/t1002-read-tree-m-u-2way.sh | 67 ++++++++++++++++++++++---------------------
t/test-lib.sh | 3 --
2 files changed, 35 insertions(+), 35 deletions(-)
Sounds like a sensible approach to clean things up; I didn't check
with fine toothed comb if the patch does follow that approach
correctly without breaking things, though.