encodeURI() incorrectly encodes newline characters

[gadenbuie]

From the encodeURI page on MDN, we expect "\n" to be encoded as "%0A", but httpuv::encodeURI() returns the wrong value.

httpuv::encodeURI("\n")
#> [1] "% A"

charToRaw(httpuv::encodeURIComponent("\n"))
#> [1] 25 20 41

charToRaw("%0A")
#> [1] 25 30 41

v8 <- V8::new_context()
v8$eval("decodeURI('%0A')")
#> [1] "\n"

Oddly, using V8 to evaluate encodeUIR("\n") results in an unspecified c++ exception

v8$eval("encodeURI('\n')")
#> Error in context_eval(join(src), private$context, serialize) : 
#>   c++ exception (unknown reason)

[wch]

It looks like it's putting a leading space instead of a 0.

httpuv::encodeURI("\n")
#> [1] "% A"
httpuv::encodeURI("\r")
#> [1] "% D"
httpuv::encodeURI("\f")
#> [1] "% C"