Having installed m4 1.4.18, build 001 my testcase for bison won’t run any longer.
Running
$ bison calc.y
I get
m4:/usr/local/ptz/share/bison/m4sugar/m4sugar.m4:1: ERROR: end of file in string
divert(bison: subsidiary program `/usr/local/ptz/bin/m4’ failed (exit status 1)
Do I use the previous m4, i.e. v1.4.15, build 0002 all is fine.