[Gnuplot-info] "sed: RE error: illegal byte sequence" while compiling gnuplot 6.0.0 on macos 13.6.3

[Ingo T. <ing...@gm...>]

Dear everyone,

I get the following error when I try to compile gnuplot 6.0.0:

trm ja/term/webp.trm ja/term/win.trm ja/term/wxt.trm ja/term/x11.trm
ja/term/xlib.trm |\
          LC_ALL=C sort -f -t':' -k2` ; do \
       f=`echo $e |cut -d\: -f1` ; s=`echo $e | cut -d\: -f2` ;\
       sed -n "/^[     ]*$s/,/^[     ]*END_HELP/p" $f ; \
     done >allterm.tmp
sed: RE error: illegal byte sequence
...

My system is macos 13.6.3 Ventura, I am using a bash shell.

Regards,
Ingo