Re: [Gnuplot-info] keyentries are arranged poorly when a long key-entry is presented

Apparently, gnuplot takes the longest title and uses the same space for the short titles.
However, you can force to reduce the space. Check `help key`, option `width <width_increment>`.
Depending on the length of your actual titles you can try to add a line, e.g.

set key maxcol 8 width -40

At least for your example where only the last keyentry is extremely long, this seems to give a reasonable result.