#1990 Gnuplot's Windows installer inserts extra semicolon in PATH

[Tricolore]

When installing Gnuplot 5.3 on Windows 10 with the installer ("gp530-20170911-win64-mingw.exe.zip") and checking the checkbox to add Gnuplot to PATH, the installer starts with adding an extra semicolon to PATH, disregarding whether PATH already ends with a semicolon or not, before adding the path to Gnuplot to PATH. This makes some applications (like cmd) fail to find Gnuplot.

[Bastian Märkisch]

Thanks for the report. The installer script was modified to remove all empty path entries. In the git repo for version 5.3 and 5.2, updated binaries not yet available.