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POSIX conformance in coreutils
- X-seq: zsh-workers 20690
- From: Vin Shelton <acs@xxxxxxxxxxxxxxxxxxxx>
- To: zsh-workers@xxxxxxxxxx
- Subject: POSIX conformance in coreutils
- Date: Tue, 11 Jan 2005 20:01:26 -0500
- Mailing-list: contact zsh-workers-help@xxxxxxxxxx; run by ezmlm
- Organization: EtherSoft, Inc
GNU coreutils (at least versions 5.2.1 and 5.3.0) enforce POSIX
conformance, so they don't like 'tail -1', instead they require
'tail -n 1'.
This causes problems in E01options.tst:
# Count the number of directories on the stack. Don't care what they are.
dircount() { dirs -v | tail -1 | awk '{ print $1 + 1}'; }
tail: `-1' option is obsolete; use `-n 1'
Try `tail --help' for more information.
It's easy enough to change the E01options.tst script to use 'test -n
1', but that's probably not the right thing to do.
We could also add
_POSIX2_VERSION=199209
to the test. This would probably not break older versions of tail,
and would force new versions of tail to accept the old syntax. Patch
attached:
Index: ChangeLog
===================================================================
RCS file: /cvsroot/zsh/zsh/ChangeLog,v
retrieving revision 1.2463
diff -a -u -U0 -r1.2463 ChangeLog
--- ChangeLog 10 Jan 2005 18:43:19 -0000 1.2463
+++ ChangeLog 12 Jan 2005 00:58:28 -0000
@@ -0,0 +1,5 @@
+2005-01-11 Vin Shelton <acs@xxxxxxxxxx>
+
+ * Test/E01options.ztst: Add _POSIX2_VERSION=199209 to silence new
+ coreutils' versions of tail.
+
Index: Test/E01options.ztst
===================================================================
RCS file: /cvsroot/zsh/zsh/Test/E01options.ztst,v
retrieving revision 1.13
diff -a -u -r1.13 E01options.ztst
--- Test/E01options.ztst 9 Sep 2004 15:03:31 -0000 1.13
+++ Test/E01options.ztst 12 Jan 2005 00:58:32 -0000
@@ -116,7 +116,7 @@
>scalar
# Count the number of directories on the stack. Don't care what they are.
- dircount() { dirs -v | tail -1 | awk '{ print $1 + 1}'; }
+ dircount() { dirs -v | _POSIX2_VERSION=199209 tail -1 | awk '{ print $1 + 1}'; }
unsetopt autopushd
cd tmpcd
dircount
HTH,
Vin
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