Re: [Libguestfs] [PATCH nbdkit 1/4] build: Move list of plugins and filters to the configure script.
On 9/11/18 4:06 PM, Richard W.M. Jones wrote:
>> + "
>> +plugins="$(echo $lang_plugins $non_lang_plugins | xargs -n1 | sort -u |
xargs)"
>
> Your use of xargs as a reformatter is interesting ;) Could also be spelled:
>
> $(echo $lang_plugins $non_lang_plugins | tr -s ' \t\n' ' ' | sort -u
> | tr ' ' '\n')"
>
> but that's longer to type, so your version is fine.
This one actually came from stackoverflow:
https://stackoverflow.com/a/8802788
which also mentioned:
plugins=$(echo $(printf %s\\n $lang_plugins $non_lang_plugins | sort -u))
for less typing, fewer processes, and no dependence on xargs.
Isn't shell golf fun :)
I wanted something that would work on BSD (although I didn't test it
yet ...)
I haven't tested on BSD either, but all of the solutions listed here
[whether xargs, tr, or $echo $(printf %s\\n)] are portable at least
according to POSIX.
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3266
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