A Quick tip around string concatination.
What doesnt works
{{ $a := $b + $c }}
or
{{ $a := $b $c }}
or
{{ $a := $b . $c }}
However what does work is
$a := printf "%s" $a | printf "%s"
However if you try to pipe multiple of these in one string like
$a := printf "%s" $a | printf "%s" $b | printf "%s"
This would add extra charcters
%!(EXTRA string=WORLD)
took me a while to figure out my own daftness
printf "%s" $a | printf "%s" $b | printf "%s" This is akin to passing output from one command to another, the second command takes input from first commands output.
so a slightly tweaked version
printf "%s" $a | printf "%s%s" $b | printf "%s"
See that extra %s on second set. thats for the output coming from the first command.
Anyone trying to piece this together would realize the string has to be concatenated in inverted order.
so if I want $a + $b + $c i will have to do it this way.
printf "%s" $c | printf "%s%s" $b | printf "%s%s" $a | printf "%s"
Remember we dont need to increase %s as we move to left. You ask why, coz the previous command output has gotten squasted into a single string.
Thats it for today.
Note: The article was first published on now defunct : https://til.anantshri.info/post/hugo_string_concat/
