Eu não acho que você possa sem codificação de URL. wget
src/url.c
os remove; até onde eu posso dizer de um breve olhar sobre a fonte, não há maneira de contornar isso.
/* Resolve "." and ".." elements of PATH by destructively modifying
PATH and return true if PATH has been modified, false otherwise.
The algorithm is in spirit similar to the one described in rfc1808,
although implemented differently, in one pass. To recap, path
elements containing only "." are removed, and ".." is taken to mean
"back up one element". Single leading and trailing slashes are
preserved.
For example, "a/b/c/./../d/.." will yield "a/b/". More exhaustive
test examples are provided below. If you change anything in this
function, run test_path_simplify to make sure you haven't broken a
test case. */