Prev: How to change the font of an entire application?
Next: tcl for tomtom??
From: Keith on 9 Apr 2010 10:02
ttk::button $t.h.0 -text "Programming Locations Manual Web Page"
-command \
{eval exec $browser \
"http://web.com/Programming?sortcol=table\x3Bup=\x23Programming_general_locations"
\
&}

I have tried the above command also with:
"http://web.com/Programming?sortcol=table\;up=\#Programming_general_locations"

but each time tcl reads the ; and creates an error. var $browser can
change with each users prefernces so I can't change that in the command.

How do I get tcl to eval the command without interpreting the ; and
creating the error?

TIA,

Keith

--
Best Regards, Keith
http://home.comcast.net/~kilowattradio/
I'm Your Huckle Berry
http://www.youtube.com/watch?v=KfbAFgD2mLo
From: pmarin on 9 Apr 2010 11:03
On Apr 9, 4:02 pm, Keith <kilowattra...(a)use-reply-to.invalid> wrote:
> ttk::button $t.h.0 -text "Programming Locations Manual Web Page"
> -command \
> {eval exec $browser \
> "http://web.com/Programming?sortcol=table\x3Bup=\x23Programming_general_locations"
> \
>  &}
>
> I have tried the above command also with:
> "http://web.com/Programming?sortcol=table\;up=\#Programming_general_locations"
>
> but each time tcl reads the ; and creates an error. var $browser can
> change with each users prefernces so I can't change that in the command.
>
> How do I get tcl to eval the command without interpreting the ; and
> creating the error?
>
> TIA,
>
> Keith
>
> --
> Best Regards, Keithhttp://home.comcast.net/~kilowattradio/
> I'm Your Huckle Berryhttp://www.youtube.com/watch?v=KfbAFgD2mLo


ttk::button $t.h.0 -text "Programming Locations Manual Web Page"
-command \
{eval exec $browser \
"http://web.com/Programming?sortcol=table\x3Bup=
\x23Programming_general_locations"
\
&}

Use brackets for eval:
ttk::button $t.h.0 -text "Programming Locations Manual Web Page"
-command \
{eval {exec $browser \
"http://web.com/Programming?sortcol=table\x3Bup=
\x23Programming_general_locations"} &}

From: Andreas Leitgeb on 9 Apr 2010 11:11
Keith <kilowattradio(a)use-reply-to.invalid> wrote:
> ttk::button $t.h.0 -text "Programming Locations Manual Web Page"
> -command \
> {eval exec $browser \
> "http://web.com/Programming?sortcol=table\x3Bup=\x23Programming_general_locations" \
> &}

If you use tcl8.5 or higher, use:
{exec {*}$browser "http://web.com/Pr...?sortcol=table;up=#Pr..." &}
No need for eval here, unless the contents of $browser really need
another round of full substitution...

If you're bound to <=8.4, or if $browser has $'s or []'s inside that need
to be substed, too, then try this:
{eval exec $browser [list "http://web.com/Pr...?sortcol=table;up=#Pr..."] &}

In none of these two approaches do you need to backslash-escape the semicolons
individually.

Just for completeness sake, there is another one:
{eval exec $browser "http://web.com/Pr...?sortcol=table\\;up=#Pr..." &}
This fixes the semicolon such that eval will not treat it specially.
(no need to fix the hash as it doesn't show up where a command is expected)

I strongly discourage this third one, as you may easily forget to correctly
escape further semicola or specific other meta-characters added lateron
during maintenance.

From: Keith on 9 Apr 2010 12:02
On 09 Apr 2010 15:11:27 GMT, Andreas Leitgeb
<avl(a)gamma.logic.tuwien.ac.at> wrote in
[ comp.lang.tcl ]:

> If you use tcl8.5 or higher, use:
> {exec {*}$browser "http://web.com/Pr...?sortcol=table;up=#Pr..." &}
> No need for eval here, unless the contents of $browser really need
> another round of full substitution...


Ok what does the {*} do in eval?

--
Best Regards, Keith
http://home.comcast.net/~kilowattradio/
I'm Your Huckle Berry
http://www.youtube.com/watch?v=KfbAFgD2mLo
From: Keith on 9 Apr 2010 12:06
On Fri, 09 Apr 2010 09:02:07 -0700, Keith
<kilowattradio(a)use-reply-to.invalid> wrote in
[ comp.lang.tcl ]:

> On 09 Apr 2010 15:11:27 GMT, Andreas Leitgeb
> <avl(a)gamma.logic.tuwien.ac.at> wrote in
> [ comp.lang.tcl ]:
>
> > If you use tcl8.5 or higher, use:
> > {exec {*}$browser "http://web.com/Pr...?sortcol=table;up=#Pr..." &}
> > No need for eval here, unless the contents of $browser really need
> > another round of full substitution...
>
>
> Ok what does the {*} do in eval?

I mean in exec.

--
Best Regards, Keith
http://home.comcast.net/~kilowattradio/
I'm Your Huckle Berry
http://www.youtube.com/watch?v=KfbAFgD2mLo
 |  Next  |  Last
Pages: 1 2 3
Prev: How to change the font of an entire application?
Next: tcl for tomtom??