This is the mail archive of the libc-alpha@sourceware.org mailing list for the glibc project.
Index Nav: | [Date Index] [Subject Index] [Author Index] [Thread Index] | |
---|---|---|
Message Nav: | [Date Prev] [Date Next] | [Thread Prev] [Thread Next] |
Other format: | [Raw text] |
On Wed, Nov 28, 2012 at 4:49 PM, Steve Ellcey <sellcey@mips.com> wrote: > While testing glibc on a MIPS system I was getting failures in tst-fmon. > After some hunting around I found that the problem wasn't in what my > glibc was producing but in what was expected. This test uses the data > file localedata/tst-fmon.data and the script tst-fmon.sh reads that > with: > > while IFS=" " read locale format value expect; do > > where there is a tab inside the quote marks. Now some of the lines > in the data file are separated by two tabs instead of one, like this one: > > de_DE.ISO-8859-1 %n 1.23 1,23 EUR > > There are two tabs between '1.23' and '1,23 EUR'. Most shells (bash, ksh) > seem to treat two tabs the same as one and have no problems. But on > my systems (debian and ubuntu) /bin/sh is a link to dash and dash does not > treat two tabs like one. It instead considers the second tab as part of the > next field. This is why the test fails for me. > > Consider this script: > > echo "y z" | \ > while IFS=" " read a b > do > echo "\"$a\"" "\"$b\"" > done > > Where there are two tabs between y and z. On my system if I run > ksh ./script or bash ./script, I get: > > "y" "z" > > But if I run dash ./script, I get: > > "y" " z" > > So my question is: what do we do about this? Remove the extra tab from > the data file, simply say dash isn't supported (the script starts with > '#!/bin/sh' and /bin/sh on my system is a link to dash), or is there some > better fix? That seems like a bug in dash. POSIX says "<newline><space><tab>foo<tab><tab>bar<space> yields two fields, foo and bar." Not "foo" and "<tab>bar". http://pubs.opengroup.org/onlinepubs/009695399/utilities/xcu_chap02.html#tag_02_06_05 Cheers, Carlos.
Index Nav: | [Date Index] [Subject Index] [Author Index] [Thread Index] | |
---|---|---|
Message Nav: | [Date Prev] [Date Next] | [Thread Prev] [Thread Next] |