docs/cmdline-opts/data-urlencode.md
--data-urlencodePost data, similar to the other --data options with the exception that this performs URL-encoding.
To be CGI-compliant, the <data> part should begin with a name followed by a separator and a content specification. The <data> part can be passed to curl using one of the following syntaxes:
URL-encode the content and pass that on. Be careful so that the content does
not contain any = or @ symbols, as that makes the syntax match one of the
other cases below.
URL-encode the content and pass that on. The preceding = symbol is not
included in the data.
URL-encode the content part and pass that on. Note that the name part is expected to be URL-encoded already.
load data from the given file (including any newlines), URL-encode that data
and pass it on in the POST. Using @- makes curl read the data from stdin.
load data from the given file (including any newlines), URL-encode that data and pass it on in the POST. The name part gets an equal sign appended, resulting in name=urlencoded-file-content. Note that the name is expected to be URL-encoded already.