Structured code to have builtin variables handled like any other user-defined variable.

Fixed HOSTNAME substitutions in file transfer specifications. ...

Added .define substitution in file transfer specifications.

Changed HOSTNAME and HOSTSHORT delimiters from '<>' to '__'.

Added smarter detection for sudo invocations via new KeyInString() function.

Summary: Fixed bug that missed sudo invocation if it wasn't the first statement on a compound line.

Summary: Added support for logging via -l argument.

Summary: Suppress use of ssh-agent and search for keys when password authentication is in effect.

Fixed help screen syntax bug.

Cleaned up help display.

Summary: Changed HOSTSEP from ':' to '-' for better compatibility with file naming standards across Linux and NTFS.

Added -E option to redirect stderr -> stdout and documented it.

Added -a option to allow continuation after file transfer error.

Went back to allowing file transfers to continue after an error on one host. ...

Made error messages more consistent and clear.

Added hostname to file transfer error report.

Went back to aborting program if any file transfer failed. ...

It makes no sense to keep going on the chance that subsequent commands expect the file there.

Reintroduced .close() commands in file transfer except stanza, protected by a try this time. ...

Changed semantics so a failed connection attempt on one host does not abort program but goes on to next host.

Cleaned up error reporting. ...

Removed explicit .close() calls in file transfer except stanza.
Added -T option to set connecton timeout period.

Added -K option to force prompting for password.

Updated copyright.

Implemented HOSTNAME and HOSTSHORT as separate hostname substitution mechanisms.

Implemented <HOSTNAME> substitution for commands and file transfers.

Updated copyright.

Made testmode the default.

Fixed -N so that it cancels any keychange auth option.

More variable substitution bug fixes.

Factored variable substitution into VarSub() and fixed bug that failed to do ...

substitution on host names passed with -H.

Added variable substitution to the command passed on the command line.

Fixed bug that was causing *all* "=" signs to be removed from the RHS of a .define statement. Now it properly only uses the leftmost as a delimiter between LHS and RHS and leaves the rest, if any, alone.

Renamed tsearchpath() to SearchPath() and had it return first matching ...

filepath as a string, not a list.  Adjusted ReadFile() accordingly.
Added explicit check to make sure a FQ filename passed on the command line
was not actually the name of a directory.

Minor cosmetic change.