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| From: | L. A. Walsh |
| Subject: | Re: 4.4 change in behavior from 4.3: how to catch unset when using ${#length} |
| Date: | Fri, 28 Oct 2016 12:43:39 -0700 |
| User-agent: | Thunderbird |
Chet Ramey wrote:
On 10/24/16 7:32 PM, L. A. Walsh wrote:I don't understand the ambiguity. If param= "#obj[@]", then it is clear to me that the user wants the length of an array named "obj".Stop there. In something like ${#obj[@]}, `param' is `obj[@]'. The `${#param}' is a clearly-defined word expansion, separate from the `[:]-' forms: http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_06_02 That's what we're talking about here.
---- Please, I'm not running in posix mode, so how would their rules apply? Just because pi=3 under Indiana state rules some number of years ago, doesn't mean it is. Just because posix defines something a certain way doesn't mean it should apply in a non-posix mode shell.
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