kre b7fc669e75 Fix an (apparent) ancient ash bug, that was apparently fixed sometime
in the past, but managed to re-surface...

The expression "${0+\}}" should expand to "}" not "\}"
Almost all other shells handle it that way (incl FreeBSD & dash).

Issue pointed out by Martijn Dekker.

Add ATF sub-tests for the 4 old var expand operators (${var+word}
${var-word} ${var-word} and ${var?word} - including the forms
with the ':' included) and amongst those tests include test cases
for this issue, so if the bug tries to appear again, we can squash
it quicker.   (The newer pattern matching operators are already
well tested as part of testing patterns.)
2019-05-04 02:52:22 +00:00
..
2019-04-25 19:37:09 +00:00

$NetBSD: README,v 1.4 2012/05/18 15:36:21 jruoho Exp $

When adding new tests, please try to follow the following conventions.

1. For library routines, including system calls, the directory structure of
   the tests should follow the directory structure of the real source tree.
   For instance, interfaces available via the C library should follow:

	src/lib/libc/gen -> src/tests/lib/libc/gen
	src/lib/libc/sys -> src/tests/lib/libc/sys
	...

2. Equivalently, all tests for userland utilities should try to follow their
   location in the source tree. If this can not be satisfied, the tests for
   a utility should be located under the directory to which the utility is
   installed. Thus, a test for env(1) should go to src/tests/usr.bin/env.
   Likewise, a test for tcpdump(8) should be in src/tests/usr.sbin/tcpdump,
   even though the source code for the program is located under src/external.

3. Otherwise use your own discretion.