** Usage: %fossil patch SUBCOMMAND ?ARGS ..?
**
** This command is used to create, view, and apply Fossil binary patches.
** A Fossil binary patch is a single (binary) file that captures all of the
** uncommitted changes of a check-out.  Use Fossil binary patches to transfer
** proposed or incomplete changes between machines for testing or analysis.
**
** > fossil patch create [DIRECTORY] PATCHFILE
**
**       Create a new binary patch in PATCHFILE that captures all uncommitted
**       changes in the check-out at DIRECTORY, or the current directory if
**       DIRECTORY is omitted.  If PATCHFILE is "-" then the binary patch
**       is written to standard output.
**
**       Options:
**           -f|--force     Overwrite an existing patch with the same name
**
** > fossil patch apply [DIRECTORY] PATCHFILE
**
**       Apply the changes in PATCHFILE to the check-out at DIRECTORY, or
**       in the current directory if DIRECTORY is omitted.
**
**       Options:
**           -f|--force     Apply the patch even though there are unsaved
**                          changes in the current check-out.  Unsaved changes
**                          are reverted and permanently lost.
**           -n|--dry-run   Do nothing, but print what would have happened
**           -v|--verbose   Extra output explaining what happens
**
** > fossil patch diff [DIRECTORY] PATCHFILE
** > fossil patch gdiff [DIRECTORY] PATCHFILE
**
**       Show a human-readable diff for the patch in PATCHFILE and assocated
**       with the the repository checked out in DIRECTORY.  The currrent
**       directory is used if DIRECTORY is omitted. All the usual
**       diff flags described at "fossil help diff" apply. With gdiff,
**       gdiff-command is used instead of internal diff logic.  In addition:
**
**           -f|--force     Continue trying to perform the diff even if
**                          baseline information is missing from the current
**                          repository
**

**
**
** > fossil patch pull REMOTE-CHECKOUT
**
**       Like "fossil patch push" except that the transfer is from remote
**       to local.  All the same command-line options apply.
**
** > fossil patch view PATCHFILE
**
**       View a summary of the changes in the binary patch in PATCHFILE.
**       Use "fossil patch diff" for detailed patch content.
**
**           -v|--verbose       Show extra detail about the patch
**
*/
void patch_cmd(void){
  const char *zCmd;