On Thu, Apr 1, 2010 at 9:46 AM, David Frascone <[email protected]> wrote:
>
> There's a really cool feature in zsh that allows you to uniquely add a
> string to the path, if it did not exist before:
>
> typeset -U path
>
> This makes all items in path have to be unique, so then, if you do:
>
> path=(/foo/bin $path)
> path=(/foot/bin $path)
>
> You will NOT have two /foo/bin(s) in your path.
>
> Is there an equivalent way to do this in fish?
Not that I know of. Fish is designed to have a minimal set of builtins
that are as orthogonal as possible. But it might be useful to define a
function like:
function varuniq --description "Return the unique arguments, merging
to the first occurrence of a word."
for x in $argv;
if not contains $x $ret
set ret $ret $y
end
end
end
Then use it like this:
set PATH (varuniq $PATH /home/joe/bin home/joe/src)
Or define:
function typeset
set rest argv[(seq 2 (count $argv))]
set $argv[1] (varuniq $argv[1] $rest)
end
Or even:
function path
for x in argv
if test -f $x and not contains $PATH $x
set PATH $PATH $x
end
end
end
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