Program control flow
- Support XDG base directory for gnuplotrc configuration preferences.
The program reads initial commands from $HOME/.config/gnuplot/gnuplotrc if this file is found. See environment.
- Exception handling for the "fit" command. Control always returns to the
next line of input, even in the case of fit errors. On return, FIT_ERROR is non-zero if an error occurred. This allows scripted recovery from a bad fit. See fit error_recovery.
- The load and call commands can input commands from a datablock as an
alternative to reading them from a file.
- New syntax if ... else if ... else ...