- Eric Wong introduced support for the new option -T. (dot) that makes curl

read stdin in a non-blocking fashion. This also brings back -T- (minus) to
  the previous blocking behavior since it could break stuff for people at
  times.

CHANGES

@@ -6,6 +6,12 @@
 
                                   Changelog
 
+Daniel Stenberg (24 Aug 2009)
+- Eric Wong introduced support for the new option -T. (dot) that makes curl
+  read stdin in a non-blocking fashion. This also brings back -T- (minus) to
+  the previous blocking behavior since it could break stuff for people at
+  times.
+
 Michal Marek (21 Aug 2009)
 - With CURLOPT_PROXY_TRANSFER_MODE, avoid sending invalid URLs like
   ftp://example.com;type=i if the user specified ftp://example.com without the

RELEASE-NOTES

@@ -9,7 +9,7 @@ Curl and libcurl 7.19.7
 
 This release includes the following changes:
 
- o 
+ o -T. is now for non-blocking uploading from stdin
 
 This release includes the following bugfixes:
 
@@ -19,6 +19,7 @@ This release includes the following bugfixes:
  o data corruption issue with re-connected transfers
  o use after free if we're completed but easy_conn not NULL (pipelined)
  o missing strdup() return code check
+ o CURLOPT_PROXY_TRANSFER_MODE could pass along wrong syntax
 
 This release includes the following known bugs:
 
@@ -27,6 +28,7 @@ This release includes the following known bugs:
 This release would not have looked like this without help, code, reports and
 advice from friends like these:
 
- Karl Moerder, Kamil Dudka, Krister Johansen, Andre Guibert de Bruet
+ Karl Moerder, Kamil Dudka, Krister Johansen, Andre Guibert de Bruet,
+ Michal Marek, Eric Wong
 
         Thanks! (and sorry if I forgot to mention someone)

docs/curl.1

@@ -1183,6 +1183,9 @@ file name to use. That will most likely cause the upload operation to fail. If
 this is used on a HTTP(S) server, the PUT command will be used.
 
 Use the file name "-" (a single dash) to use stdin instead of a given file.
+Alternately, the file name "." (a single period) may be specified instead
+of "-" to use stdin in non-blocking mode to allow reading server output
+while stdin is being uploaded.
 
 You can specify one -T for each URL on the command line. Each -T + URL pair
 specifies what to upload and to where. curl also supports "globbing" of the -T

src/main.c

@@ -3953,6 +3953,10 @@ static void dumpeasycode(struct Configurable *config)
   curl_slist_free_all(easycode);
 }
 
+static bool stdin_upload(const char *uploadfile)
+{
+  return curlx_strequal(uploadfile, "-") || curlx_strequal(uploadfile, ".");
+}
 
 static int
 operate(struct Configurable *config, int argc, argv_item_t argv[])
@@ -4417,7 +4421,7 @@ operate(struct Configurable *config, int argc, argv_item_t argv[])
           }
         }
         infdopen=FALSE;
-        if(uploadfile && !curlx_strequal(uploadfile, "-")) {
+        if(uploadfile && !stdin_upload(uploadfile)) {
           /*
            * We have specified a file to upload and it isn't "-".
            */
@@ -4511,11 +4515,14 @@ operate(struct Configurable *config, int argc, argv_item_t argv[])
           uploadfilesize=fileinfo.st_size;
 
         }
-        else if(uploadfile && curlx_strequal(uploadfile, "-")) {
+        else if(uploadfile && stdin_upload(uploadfile)) {
           SET_BINMODE(stdin);
           infd = STDIN_FILENO;
-          if (curlx_nonblock((curl_socket_t)infd, TRUE) < 0)
+          if (curlx_strequal(uploadfile, ".")) {
-            warnf(config, "fcntl failed on fd=%d: %s\n", infd, strerror(errno));
+            if (curlx_nonblock((curl_socket_t)infd, TRUE) < 0)
+              warnf(config,
+                    "fcntl failed on fd=%d: %s\n", infd, strerror(errno));
+          }
         }
 
         if(uploadfile && config->resume_from_current)