No need to create another bug. We just have to agree on updated docs. The libcurl docs says: When you change the request method by setting CURLOPT_CUSTOMREQUEST to something, you don't actually change how libcurl behaves or acts in regards to the particular request method, it will only change the actual string sent in the request.

No, we won't change this now or later. It has always worked like this.
Why is -X HEAD better than --head in scripts?

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** [bugs:#1176] Inconsistent responses: -I vs -X HEAD**
**Status:** pending-invalid
**Created:** Fri Dec 21, 2012 02:49 AM UTC by Mark Van de Vyver
**Last Updated:** Sun Dec 23, 2012 02:47 AM UTC
**Owner:** Daniel Stenberg
Attached are wireshark captures of each of the following requests.
Using:
    #!/usr/bin/env bash
    $ curl -V
    curl 7.19.7 (x86_64-pc-linux-gnu) libcurl/7.19.7 OpenSSL/0.9.8k zlib/1.2.3.3 libidn/1.15
    Protocols: tftp ftp telnet dict ldap ldaps http file https ftps 
    Features: GSS-Negotiate IDN IPv6 Largefile NTLM SSL libz 
On
    #!/usr/bin/env bash
    $ lsb_release -a
    No LSB modules are available.
    Distributor ID:	Ubuntu
    Description:	Ubuntu 10.04.4 LTS
    Release:	10.04
    Codename:	lucid
The following HEAD request hangs for some time, then returns without having read the data:
    #!/usr/bin/env bash
    $ curl -vvvv -X HEAD http://www.cookbooks.io/oc-mysql.json
    * About to connect() to www.cookbooks.io port 80 (#0)
    *   Trying 54.240.176.48... connected
    * Connected to www.cookbooks.io (54.240.176.48) port 80 (#0)
    > HEAD /oc-mysql.json HTTP/1.1
    > User-Agent: curl/7.19.7 (x86_64-pc-linux-gnu) libcurl/7.19.7 OpenSSL/0.9.8k zlib/1.2.3.3 libidn/1.15
    > Host: www.cookbooks.io
    > Accept: */*
    > 
    * HTTP 1.0, assume close after body
    < HTTP/1.0 200 OK
    < Content-Type: application/json
    < Content-Length: 397
    * HTTP/1.0 connection set to keep alive!
    < Connection: keep-alive
    < x-amz-id-2: kg0Abj7a82VnHeFwXxNGIQKStQH7hGKS1h04Sugecn2EACjHmGI6nEYmyeetcLUo
    < x-amz-request-id: 174E29993AA95268
    < Date: Wed, 19 Dec 2012 09:34:16 GMT
    < Last-Modified: Sat, 08 Dec 2012 10:36:44 GMT
    < ETag: "a6765239cf5298eb9ace2df4bef09ff7"
    < Server: AmazonS3
    < Age: 17551
    < X-Amz-Cf-Id: vthKMA0DpoemDPBvIa9Y4Vkr2ctDdvpyMPEXJQhcNKJFaWV7rYtKew==
    < Via: 1.0 80c5b2b8de9b2bf3715181e52314a46c.cloudfront.net (CloudFront)
    < X-Cache: Hit from cloudfront
    < 
    * transfer closed with 397 bytes remaining to read
    * Closing connection #0
    curl: (18) transfer closed with 397 bytes remaining to read
The following HEAD request returns immediately, as expected
    #!/usr/bin/env bash
    $ curl -vvvv -I http://www.cookbooks.io/oc-mysql.json
    * About to connect() to www.cookbooks.io port 80 (#0)
    *   Trying 54.240.176.10... connected
    * Connected to www.cookbooks.io (54.240.176.10) port 80 (#0)
    > HEAD /oc-mysql.json HTTP/1.1
    > User-Agent: curl/7.19.7 (x86_64-pc-linux-gnu) libcurl/7.19.7 OpenSSL/0.9.8k zlib/1.2.3.3 libidn/1.15
    > Host: www.cookbooks.io
    > Accept: */*
    > 
    * HTTP 1.0, assume close after body
    < HTTP/1.0 200 OK
    HTTP/1.0 200 OK
    < Content-Type: application/json
    Content-Type: application/json
    < Content-Length: 397
    Content-Length: 397
    * HTTP/1.0 connection set to keep alive!
    < Connection: keep-alive
    Connection: keep-alive
    < x-amz-id-2: kg0Abj7a82VnHeFwXxNGIQKStQH7hGKS1h04Sugecn2EACjHmGI6nEYmyeetcLUo
    x-amz-id-2: kg0Abj7a82VnHeFwXxNGIQKStQH7hGKS1h04Sugecn2EACjHmGI6nEYmyeetcLUo
    < x-amz-request-id: 174E29993AA95268
    x-amz-request-id: 174E29993AA95268
    < Date: Wed, 19 Dec 2012 09:34:16 GMT
    Date: Wed, 19 Dec 2012 09:34:16 GMT
    < Last-Modified: Sat, 08 Dec 2012 10:36:44 GMT
    Last-Modified: Sat, 08 Dec 2012 10:36:44 GMT
    < ETag: "a6765239cf5298eb9ace2df4bef09ff7"
    ETag: "a6765239cf5298eb9ace2df4bef09ff7"
    < Server: AmazonS3
    Server: AmazonS3
    < Age: 17498
    Age: 17498
    < X-Amz-Cf-Id: WDFkBSbsqHlTHfyCxJlwSpPZmWjlUbWBYifj2_5WK9LBEnwnMwEkpg==
    X-Amz-Cf-Id: WDFkBSbsqHlTHfyCxJlwSpPZmWjlUbWBYifj2_5WK9LBEnwnMwEkpg==
    < Via: 1.0 af6d631f98f136eb1062d3234862f44d.cloudfront.net (CloudFront)
    Via: 1.0 af6d631f98f136eb1062d3234862f44d.cloudfront.net (CloudFront)
    < X-Cache: Hit from cloudfront
    X-Cache: Hit from cloudfront
    
    < 
    * Connection #0 to host www.cookbooks.io left intact
    * Closing connection #0
    
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