Combining parameter expansion with modifiers in zsh

Question

Say I have the following

$f1=/some/path
$f2=/some/subpath
$f3=/some/other/subpath

If I try:

test1=${$f1/$f2/${f3:t}}

zsh complains with bad substitution.

However:

test2=${f3:t}

works well. What am I doing wrong?

Answer 1

The problem is with the extra $ in front of f1. Try:

test1=${f1/$f2/${f3:t}}