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Error in capturing selection

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https://www.novabbs.com/devel/article-flat.php?id=10646&group=comp.lang.tcl#10646

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From: luc...@sep.invalid (Luc)
Newsgroups: comp.lang.tcl
Subject: Error in capturing selection
Date: Thu, 2 Feb 2023 03:43:50 -0300
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by: Luc - Thu, 2 Feb 2023 06:43 UTC

$::bottomtextbox insert end "\n[$::HASFOCUS tag ranges sel]"

Type abcdef

Highlight. It prints:

1.0 1.6

So it doesn't give me the text. It gives me the indices of the
selection. OK then:

$::bottomtextbox insert end "\n[$::HASFOCUS get [$::HASFOCUS tag ranges sel]]"

Can't even type. It throws an error:

bad text index ""
while executing
"$::HASFOCUS get [$::HASFOCUS tag ranges sel]"

What am I doing wrong this time?

--
Luc
>>

Re: Error in capturing selection

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Subject: Re: Error in capturing selection
From: martyn.a...@gmail.com (Martyn Smith)
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by: Martyn Smith - Thu, 2 Feb 2023 09:01 UTC

Le jeudi 2 février 2023 à 07:43:55 UTC+1, Luc a écrit :
> $::bottomtextbox insert end "\n[$::HASFOCUS tag ranges sel]"
>
> Type abcdef
>
> Highlight. It prints:
>
> 1.0 1.6
>
> So it doesn't give me the text. It gives me the indices of the
> selection. OK then:
>
> $::bottomtextbox insert end "\n[$::HASFOCUS get [$::HASFOCUS tag ranges sel]]"
>
> Can't even type. It throws an error:
>
> bad text index ""
> while executing
> "$::HASFOCUS get [$::HASFOCUS tag ranges sel]"
>
>
> What am I doing wrong this time?
>
> --
> Luc
> >>
The get requires 2 arguments and the 'tag ranges sel' returns a list of 2 items so you need the {*} operator to expand the list into 2 arguments
[$::HASFOCUS get {*}[$::HASFOCUS tag ranges sel]]

Martyn

Only God can make random selections.

devel / comp.lang.tcl / Error in capturing selection

Subject	Author
Error in capturing selection	Luc
Error in capturing selection	Martyn Smith