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Robin H. Johnson wrote: |
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> On Mon, Jun 08, 2009 at 12:00:59AM +0100, Roy Marples wrote: |
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>>> Roy: [[ or [? |
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>> Entirely depends on system. |
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>> OpenRC uses /bin/sh to process the actual init script. We rely on /bin/sh |
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>> claiming POSIX compat [1]. On Gentoo Linux systems, this is normally a link |
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>> to bash, so you can use bashisms if you so wish. |
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> Is "[[" a bashism or not? That's all I'm asking. |
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> What's a good way to test for POSIX compatibility so that the testing |
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> CAN actually be done. My testcase was 'bash --posix'. Testing under |
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> busybox's ash seems to work perfectly with "[[" as well. |
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bash(1) only documents the --posix option to modify how bash starts up. |
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It does not mention restricting bash extensions such as [[ |
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IIRC vapier patched busybox to alias [[ to [, which is worse as you |
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still have to quote correctly as if [ and you don't get the =~ operator |
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from [[. |
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> |
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>> But as you asked, here's what the good doc [1] has to say |
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>> The following words may be recognized as reserved words on some |
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>> implementations (when none of the characters are quoted), causing |
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>> unspecified results: |
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>> [[ ]] function select |
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>> In other words, I won/t make any claims whether [[ ]] works in OpenRC. |
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> That doesn't answer if it's a bashism. I interpret that part of the |
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> document to simply be that it's implementation detail is not covered by |
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> the POSIX spec. |
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If it's not in the spec, then it has to be an extension. Thus, if bash |
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is extending it then it's a bashism. |
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> I'm all for going with something that will work more globally, IFF it |
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> can be easily tested for (on pure Gentoo Linux machines, which is what |
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> most developers are running, because they won't be bothered to test |
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> under G/FBSD or Prefix/OSX etc), vs. just going by what the |
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> specification says. |
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The only available shell on Linux that doesn't do anything other than |
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the POSIX spec is dash. However, even that shell is not entirely |
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compliant (a few missing features last I looked). |
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>> Just Do What The Fuck You Like, Just Don't Bug Me pretty much somes up my |
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>> attitude right now. Why do I have this attiude? Well, bug #175783 is a very |
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>> good example. It's over two years since I submitted replacement scripts and |
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>> did more besides. It's just like the courier-imap fiasco when |
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>> baselayout-1.12 was touted for stable, but this time I Just Don't Care. |
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> There hasn't been any release of the mysql-init-scripts in 2 years. |
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> It's not that anything contrary to your opinions has been done on that |
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> bug, it's more that I haven't have any specific need to fix that package |
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> yet. |
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Other than the need to actually allow mysql to work on Gentoo/FreeBSD. |
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Ah, you've already said that you don't want to run anything other than |
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Linux. Fine, that's your choice, but please hand mysql over to someone |
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who cares about Gentoo running on alternative OS's as you've just |
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demonstrated you just don't care. |
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Thanks |
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|
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Roy |
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