Hello,

I would like to remove an element from an array - actually a path from the
$path variable. After some googling, I've discovered the ${array:|excl}
syntax.

Here is my code:

excl=($path_to_remove)
echo "path type: ${(t)path}
# -> path type: array-tied-export-special

export path=${path:|excl}
# -> export:19: path: inconsistent type for assignment

What am I doing wrong? Actually, as the command ends up with an exception,
I'm not able to verify whether 'path' is an array or a scalar after the
command.

This is the relevant part of the documentation. I don't think any of the
conditions in the second sentence is relevant to the error message.

${name:|arrayname}

If arrayname is the name (N.B., not contents) of an array variable, then
any elements contained in arrayname are removed from the substitution of
name. If the substitution is scalar, either because name is a scalar
variable or the expression is quoted, the elements of arrayname are instead
tested against the entire expression
Any suggestions?
Peter