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

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On 3/18/26 15:34, pmcc wrote:
> Helmut Giese wrote:
>> Choosechee <choosechee@pm.me> schrieb:
>>
>>> Let's say I have defined a list as follows:
>>> `set myList {"First\nElement" {Second Element}}`
>>> If I print this list:
>>> `chan puts $myList`
>>> I get:
>>> `"First\nElement" {Second Element}`
>>> However, if I were to iterate over the list and print the elements:
>>> `foreach {element} $myList {chan puts $element}`
>>> I get:
>>> ```
>>> First
>>> Element
>>> Second Element
>>> ```
>>> The elements have undergone substitution before being returned. In most
>>> cases, this is desirable, but in my case, I want them to be returned
>>> exactly as written, like:
>>> ```
>>> "First\nElement"
>>> {Second Element}
>>> ```
>>> How can I get an element of a list without it being substituted? I can't
>>> split the list by whitespace, because single elements that contain
>>> whitespace will also be split.
>> Hello,
>> by using 'llength'?
>> Like (all on one line)
>> for {set i 0} {$i < [llength $myList]}  {incr i} {puts "$i: [lindex
>> $myList $i]"}
>> HTH
>> Helmut
>>
> 
> Hello,
> 
> Maybe building an explicit list is safer :
> 
> set myList [ list {First\nElement} {Second Element} ]
> 
> foreach element $myList { chan puts $element }
> 
>  > First\nElement
>  > Second Element
> 
> or if you collect data in different variables :
> 
> set a {First\nElement}
> set b {Second Element}
> 
> set myList [list $a $b]
> or
> set myList [list $a ]
> lappend  myList $b
> 
> foreach e $myList { chan puts $e }
> 
>  > First\nElement
>  > Second Element
> 
> note that this will fail :
> set myList $a
> foreach e $myList { chan puts $e }
> 
>  > First
>  > Element
> 
> Regards
> Pascal
> 

In my actual use case, I'm reading the list from a file that someone 
else could have made, so I can't do this.

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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

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