Re: AC_PROG_EGREP and $EGREP_TRADITIONAL and shell conditional statements

On Sat, Apr 1, 2023, at 11:38 PM, Paul Eggert wrote:
> This is surely a bug in mcpp's configure.ac: it's greatly underquoted. I 
> don't recall ever seeing a script that underquoted before.

Agreed, that looks like the authors quoted things only when they absolutely
had to.

> * lib/autoconf/programs.m4 (_AC_PATH_PROG_FLAVOR_GNU):
> Add two ‘@%:@(’s to cater to underquoted callers.
> * lib/m4sugar/m4sh.m4 (_AS_PATH_WALK): Use quadrigraph instead of
> ‘#’, for underquoted callers.

Should we convert these to AS_CASE instead maybe?  Or would that not help?  I'll experiment.

zw