Test failure with GNU make 3.82:
...
GNU Make 3.82
# Failed test 'TEST 24: commands spanning multiple lines -
script/makesimple generated the right output'
# at t/makesimple.t line 59.
# got: 'all:
# @echo hello \
# my \
# world
# '
# expected: 'all:
# @echo hello \
# my \
# world
# '
# Looks like you failed 1 test of 84.
t/makesimple.t .......
Dubious, test returned 1 (wstat 256, 0x100)
Failed 1/84 subtests
Test Summary Report
-------------------
t/makesimple.t (Wstat: 256 Tests: 84 Failed: 1)
Failed test: 71
Non-zero exit status: 1
Files=8, Tests=330, 13 wallclock secs ( 0.10 usr 0.02 sys + 12.06 cusr
0.46 csys = 12.64 CPU)
Result: FAIL
Failed 1/8 test programs. 1/330 subtests failed.