Escape all special characters (i.e. everything except for a-z, A-Z, 0-9, '-',
'.', '_' or '~') for use in URLs.
Usage
curl_escape(url)
curl_unescape(url)
Arguments
url
A character vector (typically containing urls or parameters) to be
encoded/decoded
Examples
# Escape strings
out <- curl_escape("foo = bar + 5")
curl_unescape(out)
# All non-ascii characters are encoded
mu <- "u00b5"
curl_escape(mu)
curl_unescape(curl_escape(mu))
providing 
.