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[20050320] Making NetBSD's (a)sh pass regression test with 0 errors
David Laight has changed NetBSD's (a)sh to pass all the IFS tests in this regression test. For comparison, here are a few numbers from various sh(compatible) shells (sorted best to worst):

 sh NetBSD-current:       # tests 6856 passed 6856 failed 0   
 bash 2.05b.0(1):         # tests 6856 passed 5408 failed 1448
 bash 3.00.16(1):         # tests 6856 passed 5408 failed 1448
 ksh Solaris 9/x86:       # tests 6856 passed 4456 failed 2400
 ksh NetBSD 2.0_STABLE:   # tests 6856 passed 2584 failed 4272    
 sh NetBSD 2.0_STABLE:    # tests 6856 passed 1176 failed 5680 ordered 1336   
 sh Solaris 9/x86:        aborts with "bad substitution" 



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