Re: proposed autoconf patches for AS_BASENAME, AS_DIRNAME

[Akim Demaille]

| OK, I checked it in with the above change.  Testing revealed that
| one of our test cases was too enthusiastic, so I also checked in this
| change:

Thanks!

| @@ -100,27 +100,28 @@ AT_DATA_M4SH([script.as],
|  # weak for us, in which case `as_expr=false'.
|  m4_define([DIRNAME_TEST],
|  [dir=`AS_DIRNAME([$1])`
| -test "$dir" = "$2" ||
| +test "$dir" = "$2" || (test -n "$3" && test "$dir" = "$3") ||
|    echo "dirname($1) = $dir instead of $2" >&2

On a stylistic note, just to teach a bit of m4sugar

| +test "$dir" = "$2"m4_ifval([$3], [ || test "$dir" = "$3"]) ||
|    echo "dirname($1) = $dir instead of $2" >&2