Operator::inject() applied the ":N" prefix modifier with the
byte-oriented substr(), splitting multibyte UTF-8 characters in half
and producing invalid percent-encoded output (e.g. the euro sign
truncated to its first byte only).
RFC 6570 Section 2.4.1 defines the prefix length as a count of
characters, so use mb_substr() with an explicit UTF-8 encoding
instead. ext-mbstring is already a hard dependency of this package.
upstream
dualfroz