> What I'd like therefore is a rationale: if -a, -o and parentheses are
> not in POSIX 1990, please say so
They are only listed as XSI extensions in older POSIX. Not all
shells implemented XSI extensions (think of debian's posh), and
even among those that did, the choices for order of precedence
I noticed this today; I'm pretty sure it's a simple typo:
--- autoconf.texi.~1~ 2009-07-26 22:56:10.0 -0400
+++ autoconf.texi 2009-08-04 17:59:56.0 -0400
@@ -13454,8 +13454,8 @@
if test -z "$SEEN_A" ; then echo bug ; fi]])
AC_DEFUN([TESTC], [AC_REQUIRE([TESTB])[echo in C
2009/8/4 Eric Blake :
>> What I'd like therefore is a rationale: if -a, -o and parentheses are
>> not in POSIX 1990, please say so
>
> [beautiful rationale from Eric]
Thanks Eric. Could a brief summary of this go in the manual? Something like:
"widely unimplemented and deprecated in POSIX 2008"
This assertion about the "test" command/shell built in occurs in the
node "Limitations of Builtins" in the autoconf manual, and puzzles me,
since the mentioned features are all mentioned in sh(1posix), i.e.
they have been in POSIX since at least 2001. I understand their use
being discouraged if the
