A file named Müsli.html was indexed with the URL /Müsli.html, which only
resolves if the host happens to serve the same byte sequence the index was
built from. Encode the URL that build_url derives from the file path using
the URL spec's path percent-encode set, leaving / and % alone so path
separators and already-encoded filenames are unaffected.
URLs supplied by the caller (data-pagefind-meta="url:...", addCustomRecord)
do not go through build_url and are untouched.
Fixes#619
dualfroz
128a5c945a