I'd like to concat some string-based variables and I want each of them in a new line. However, I can't find the correct way to write the code. This is what I tried:
set mensaje "Error: esta atenuacion: $att dB\n"
gset listaMensajes [concat [gget listaMensajes] "$mensaje"]
set mensaje "Error: esta atenuacion: $att dB\n"
gset listaMensajes [concat [gget listaMensajes] "$mensaje"]
puts "[gget listaMensajes]"
The variable $att takes different values in the different parts of the code.
I also tried:
gset listaMensajes [concat [gget listaMensajes] "\n" "$mensaje"]
but none of them work; I get the messages in the same line
The concat command strips whitespace between its arguments, so it isn't much use here. What you probably want is the join command. Since you are using non-standard commands, I can't recreate your case, but say that foo is a command that returns a list of strings:
join [foo] \n
returns a string consisting of the strings returned by foo, with a newline chaaracter joining each string pair.
This of course also works if you have a list of strings in a variable called bar:
join $bar \n
Or if you build a list in a command substitution:
join [list "foo bar" "baz qux"] \n