Arrays with each item on one line

Arrays with each item on one line

[TJ Luoma]

I don't understand arrays very well and am trying to learn.

I keep trying to do things like this:

FILES=("$HOME/Library/Application Support/Keyboard Maestro"
"$HOME/Library/Preferences/com.stairways.keyboardmaestro.editor.plist"
"$HOME/Library/Preferences/com.stairways.keyboardmaestro.engine.plist"
"$HOME/Library/Preferences/com.stairways.keyboardmaestro.plist")

for F in $FILES
do

command ls -ld "$F"

done

but instead of $F being each line for 4 iterations of the loop, I get
all 4 lines x 4 times.

I thought that the solution was changing IFS, so I tried:

IFS='
'

and

IFS=$'\n'

but that doesn't seem to change anything.

Can someone tell me what I'm missing?

Thanks

TjL

Zsh version 4.3.11 on Mac OS X/10.7

Re: Arrays with each item on one line

[Benjamin R. Haskell]

On Tue, 31 Jan 2012, TJ Luoma wrote:

> I don't understand arrays very well and am trying to learn.
>
> I keep trying to do things like this:
>
> FILES=("$HOME/Library/Application Support/Keyboard Maestro"
> "$HOME/Library/Preferences/com.stairways.keyboardmaestro.editor.plist"
> "$HOME/Library/Preferences/com.stairways.keyboardmaestro.engine.plist"
> "$HOME/Library/Preferences/com.stairways.keyboardmaestro.plist")
>
> for F in $FILES
> do
>
> command ls -ld "$F"
>
> done
>
> but instead of $F being each line for 4 iterations of the loop, I get 
> all 4 lines x 4 times.
>
> [...]
>
> Can someone tell me what I'm missing?
>
> [...]
>
> Zsh version 4.3.11 on Mac OS X/10.7

Your example works fine for me using Zsh version 4.3.11 under OSX 10.7.

What do you get from running 'setopt'? I get:

autocd
noautomenu
autopushd
nocheckjobs
cshjunkiehistory
extendedglob
extendedhistory
noglobalrcs
globdots
histignoredups
histignorespace
histnostore
histsubstpattern
nohup
incappendhistory
interactive
login
magicequalsubst
monitor
nonotify
promptsubst
pushdsilent
shinstdin
zle

I don't think any of those should affect how arrays are interpreted. 
So, you can probably ignore any of the ones in that list that appear in 
yours, too.

-- 
Best,
Ben

Re: Arrays with each item on one line

[TJ Luoma]

On Tue, Jan 31, 2012 at 7:48 PM, Benjamin R. Haskell <zsh@benizi.com> wrote:
> What do you get from running 'setopt'? I get:

autocd
extendedglob
nofunctionargzero
interactive
listpacked
login
promptsubst
pushdignoredups
shinstdin

Re: Arrays with each item on one line

[Benjamin R. Haskell]

On Tue, 31 Jan 2012, TJ Luoma wrote:

> On Tue, Jan 31, 2012 at 7:48 PM, Benjamin R. Haskell <zsh@benizi.com> wrote:
>> What do you get from running 'setopt'? I get:
>
> autocd
> extendedglob
> nofunctionargzero
> interactive
> listpacked
> login
> promptsubst
> pushdignoredups
> shinstdin

Even with that set of options, I don't get the behavior you described. 
Maybe I'm misunderstanding your explanation?  It seems more likely that 
you're not posting the actual code you're using.  Running the code you posted:

 	FILES=("$HOME/Library/Application Support/Keyboard Maestro"
 	"$HOME/Library/Preferences/com.stairways.keyboardmaestro.editor.plist"
 	"$HOME/Library/Preferences/com.stairways.keyboardmaestro.engine.plist"
 	"$HOME/Library/Preferences/com.stairways.keyboardmaestro.plist")

 	for F in $FILES
 	do
 		command ls -ld "$F"
 	done

on the OSX machine I have access to, I get (as expected, since the files 
don't exist):

$
ls: /Users/bhaskell/Library/Application Support/Keyboard Maestro: No such file or directory
ls: /Users/bhaskell/Library/Preferences/com.stairways.keyboardmaestro.editor.plist: No such file or directory
ls: /Users/bhaskell/Library/Preferences/com.stairways.keyboardmaestro.engine.plist: No such file or directory
ls: /Users/bhaskell/Library/Preferences/com.stairways.keyboardmaestro.plist: No such file or directory
$

So, the FILES array is only looped over once.

-- 
Best,
Ben

Re: Arrays with each item on one line

[TJ Luoma]

ARGH.

Sorry.

PEBKAC.

(I was using $FILES instead of $F inside the loop.)