[Dovecot] Date sort-order ignoring timezone, and a few Q's.

[Matthias Andree]

Timo Sirainen <tss at iki.fi> writes:

> On Thu, 2003-07-10 at 03:26, Matthias Andree wrote:
>> Timo Sirainen <tss at iki.fi> writes:
>> 
>> > Oh. I guess "test -c /dev/urandom" isn't the proper way to check it
>> > then. It's not a character device with you? What OS? Maybe test -e would
>> > work.
>> 
>> test -e isn't implemented in Solaris' /bin/sh, so it's not an option
>> unless you're willing to add special treatment to figure if you need to
>> launch /usr/xpg4/bin/sh or something.
>
> I knew there was something wrong with it :) Well, this should work then:
>
> if test -c /dev/urandom -o -s /dev/urandom; then

Autoconf suggests using

  if test -c /dev/urandom || test -s /dev/urandom ; then

Rationale: Quoting from "(autoconf.info)Limitations of Builtins":

|  `test'
|     [...]
|
|     If you need to make multiple checks using `test', combine them with
|     the shell operators `&&' and `||' instead of using the `test'
|     operators `-a' and `-o'.  On System V, the precedence of `-a' and
|     `-o' is wrong relative to the unary operators; consequently, POSIX
|     does not specify them, so using them is nonportable.  If you
|     combine `&&' and `||' in the same statement, keep in mind that
|     they have equal precedence.
|
|     You may use `!' with `test', but not with `if': `test ! -r foo ||
|     exit 1'.

-- 
Matthias Andree