A way to `unlist' a list ?

[Gert]

Hi,

I wonder if there is a way to unlist a list ...
I am very new to Tcl, but this is the case:

I have a proc with `args' as the last arg, and I want that list to be executed
by exec. Exec however wants the arguments to the program as arguments to exec,
so:
set output [exec $args]
won't work if args is (for example) "ls -l" :(

Is there a way to expand the "ls -l" to a "ls" "-l" ??

Thanx,

Gert
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[Gerald W. Lester]

Gert wrote:

> Hi,
>
> I wonder if there is a way to unlist a list ...
> I am very new to Tcl, but this is the case:
>
> I have a proc with `args' as the last arg, and I want that list to be executed
> by exec. Exec however wants the arguments to the program as arguments to exec,
> so:
> set output [exec $args]
> won't work if args is (for example) "ls -l" :(
>
> Is there a way to expand the "ls -l" to a "ls" "-l" ??

Check out the eval command

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| Gerald W. Lester | "The man who fights for his ideals is |
| gerald...@mtolive-lcms.org | the man who is alive." -- Cervantes |
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[Cameron Laird]

In article <377D8343...@home.com>,

Gerald W. Lester <gwle...@home.com> wrote:
>Gert wrote:
>
>> Hi,
>>
>> I wonder if there is a way to unlist a list ...
>> I am very new to Tcl, but this is the case:
>>
>> I have a proc with `args' as the last arg, and I want that list to be executed
>> by exec. Exec however wants the arguments to the program as arguments to exec,
>> so:
>> set output [exec $args]
>> won't work if args is (for example) "ls -l" :(
>>
>> Is there a way to expand the "ls -l" to a "ls" "-l" ??
>
>Check out the eval command

.
.
.
Gerald's right. For details, see <URL:
http://starbase.neosoft.com/~claird/comp.lang.tcl/fmm.html#ls>.
--

Cameron Laird http://starbase.neosoft.com/~claird/home.html
cla...@NeoSoft.com +1 281 996 8546 FAX

[Mike]

g...@nowmoo.demon.nl (Gert) wrote in
<377D6BA1...@nowmoo.demon.nl>:

>I have a proc with `args' as the last arg, and I want that list to
>be executed by exec. Exec however wants the arguments to the
>program as arguments to exec, so:
> set output [exec $args]
>won't work if args is (for example) "ls -l" :(

Try set output [eval exec $args]