Denys Vlasenko schrieb:
> On Tuesday 05 October 2010 01:05, David N. Lombard wrote:
>> According to the man page for bash 4.0.38:
>> EXPANSION
>> Expansion is performed on the command line after it has been split
>> into words. There are seven kinds of expansion performed: brace
>> expansion, tilde expansion, parameter and variable expansion,
>> command substitution, arithmetic expansion, word splitting, and
>> pathname expansion.
>
> Well, considering that words themselves are only known after
> parameter and variable expansion, the above description
> is a bit... "simplified".
>
>> The order of expansions is: brace expansion, tilde expansion,
>> parameter, variable and arithmetic expansion and command
>> substitution (done in a left-to-right fashion), word splitting,
>> and pathname expansion.
>>
>> On systems that can support it, there is an additional expansion
>> available: process substitution.
>>
>> Only brace expansion, word splitting, and pathname expansion can
>> change the number of words of the expansion; other expansions
>> expand a single word to a single word. The only exceptions to this
>> are the expansions of "$@" and "${na...@]}" as explained above
>> (see PARAMETERS).
>>
>> Note variable expansion happens *after" brace expansion.
>
> God, this is worse than I thought!
>
> # va=11; vb=22; echo $v{a,b}
> 11 22
> #
>
> Wow... this will be a bitch to implement...
>
The obvious solution is to call it a feature :)
re,
wh
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