Re: expr ... and `expr ...` return different results on QNX 4.2.5

[Akim Demaille]

| I think you can safely change the as_expr test into
| 
| if expr a : '\(a\)' >dev/null; then
|   as_expr=expr
| ekse
|   as_expr=false
| fi

Just being applied, you'll be able to give it a try within a minute.