[a-z] gets expanded by the shell:
--- autoconf.sh 2000/07/10 10:23:09 1.76
+++ autoconf.sh 2000/07/12 10:31:31
@@ -223,7 +223,7 @@
# 2. $WARNINGS, $3 command line options, in that order.
# Set them in the order expected by the M4 macros: the converse.
_ac_warnings=
-for warning in `IFS=,; echo syntax,$WARNINGS,$warnings | tr [A-Z] [a-z]`
+for warning in `IFS=,; echo syntax,$WARNINGS,$warnings | tr '[A-Z]' '[a-z]'`
do
test -n $warning || continue
_ac_warnings="$warning"`test -n "$_ac_warnings" && echo ",$_ac_warnings"`
/Johan
