• Eli Zaretskii's avatar
    Fix Calc graph output on MS-Windows · b26d6373
    Eli Zaretskii authored
    The previous code relied on "pgnuplot" executable, which is
    no longer provided with Gnuplot 5.x.
    * lisp/calc/calc.el (calc-gnuplot-name): Set to "pgnuplot" on
    MS-Windows only if such an executable exists.
    * lisp/calc/calc-graph.el (calc-graph-w32-p): New defsubst.
    (calc-graph-plot, calc-graph-command, calc-gnuplot-command)
    (calc-graph-init): Call calc-graph-w32-p wherever we need to
    do something special for invoking gnuplot on MS-Windows,
    instead of comparing against calc-gnuplot-name.
    (calc-graph-plot): Set the terminal to "qt" on MS-Windows when
    pgnuplot.exe is not available.
    (calc-graph-kill): Delete the temporary files only after
    killing the gnuplot process, otherwise the deletion might fail
    on MS-Windows because the files are still in use.
calc.el 139 KB