Re: How do I get an element of a list without it being substituted?

Path	csiph.com!eternal-september.org!feeder.eternal-september.org!nntp.eternal-september.org!.POSTED!not-for-mail
From	Emiliano <emiliano@example.invalid>
Newsgroups	comp.lang.tcl
Subject	Re: How do I get an element of a list without it being substituted?
Date	Thu, 19 Mar 2026 18:08:07 -0300
Organization	A noiseless patient Spider
Lines	27
Message-ID	<20260319180807.352f25d7c8ddd320497a5fa7@example.invalid> (permalink)
References	<10pevmb$454s$2@dont-email.me> <10pf5rt$73m7$1@dont-email.me> <10pfoql$cht5$2@dont-email.me>
MIME-Version	1.0
Content-Type	text/plain; charset=US-ASCII
Content-Transfer-Encoding	7bit
Injection-Date	Thu, 19 Mar 2026 21:08:09 +0000 (UTC)
Injection-Info	dont-email.me; posting-host="a5a16ba8c2e32113acf19956a1afb9e5"; logging-data="1113430"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+9kVp3HE/bqnxTGY5kiVy2B7frj/t7r70="
Cancel-Lock	sha1:aBrs2axqs3zuyDl1Ye2X8U0yBJk=
X-Newsreader	Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu)
Xref	csiph.com comp.lang.tcl:55596

Show key headers only | View raw

On Thu, 19 Mar 2026 02:59:33 -0000 (UTC)
Rich <rich@example.invalid> wrote:

[...]
> Are you sure?:
> 
>   % set myList {"First\nElement" {Second Element}}
>   "First\nElement" {Second Element}
>   % llength $myList
>   2
>   % lindex $myList 0
>   First
>   Element
> 
> It looks like the list parser, when encountering a quoted string in the 
> thing it is parsing to a list, has invoked rule 4 and performed 
> "backslash substitution" when creating list element zero.

Yes, this is described in detail in TIP 407 "The String Representation
of Tcl Lists: the Gory Details".

https://core.tcl-lang.org/tips/doc/trunk/tip/407.md

Regards

-- 
Emiliano <emil.gavilan@gmail.com>

Back to comp.lang.tcl | Previous | Next — Previous in thread | Next in thread | Find similar

Thread

How do I get an element of a list without it being substituted? Choosechee <choosechee@pm.me> - 2026-03-18 14:50 -0500
  Re: How do I get an element of a list without it being substituted? Helmut Giese <hgiese@ratiosoft.com> - 2026-03-18 21:16 +0100
    Re: How do I get an element of a list without it being substituted? pmcc <sysfl@free.fr> - 2026-03-18 21:34 +0100
      Re: How do I get an element of a list without it being substituted? Choosechee <choosechee@pm.me> - 2026-03-18 16:31 -0500
    Re: How do I get an element of a list without it being substituted? Choosechee <choosechee@pm.me> - 2026-03-18 16:34 -0500
  Re: How do I get an element of a list without it being substituted? Rich <rich@example.invalid> - 2026-03-18 20:32 +0000
    Re: How do I get an element of a list without it being substituted? Choosechee <choosechee@pm.me> - 2026-03-18 16:33 -0500
      Re: How do I get an element of a list without it being substituted? Rich <rich@example.invalid> - 2026-03-19 02:50 +0000
        Re: How do I get an element of a list without it being substituted? Choosechee <choosechee@pm.me> - 2026-03-18 22:22 -0500
          Re: How do I get an element of a list without it being substituted? Rich <rich@example.invalid> - 2026-03-19 03:55 +0000
    Re: How do I get an element of a list without it being substituted? Tristan Wibberley <tristan.wibberley+netnews2@alumni.manchester.ac.uk> - 2026-03-21 06:39 +0000
  Re: How do I get an element of a list without it being substituted? Robert Heller <heller@deepsoft.com> - 2026-03-18 21:35 +0000
    Re: How do I get an element of a list without it being substituted? Rich <rich@example.invalid> - 2026-03-19 02:59 +0000
      Re: How do I get an element of a list without it being substituted? Emiliano <emiliano@example.invalid> - 2026-03-19 18:08 -0300
  Re: How do I get an element of a list without it being substituted? Choosechee <choosechee@pm.me> - 2026-03-18 22:28 -0500
    Re: How do I get an element of a list without it being substituted? Ralf Fassel <ralfixx@gmx.de> - 2026-03-19 11:11 +0100
  Re: How do I get an element of a list without it being substituted? Christian Gollwitzer <auriocus@gmx.de> - 2026-03-20 08:09 +0100

csiph-web