Eric Blake said: > .... Just go with: > X=`echo "$X" | sed 's/[, ].*//'`
The "sed" is nice and clear. However, that "echo" will probably cause trouble if $X starts with "-" or has other characters in it. I presume in this case that $X will *usually* start with "-", so you REALLY don't want to use echo directly. Unless $X can *only* contain alphanumerics, I suggest replacing echo "$X" with: printf '%s\n' "$X" An alternative would be to use AS_ECHO. Dale Visser, you might want to look here: https://www.gnu.org/savannah-checkouts/gnu/autoconf/manual/autoconf-2.69/html_node/Portable-Shell.html and especially: https://www.gnu.org/savannah-checkouts/gnu/autoconf/manual/autoconf-2.69/html_node/Limitations-of-Builtins.html --- David A. Wheeler _______________________________________________ Autoconf mailing list Autoconf@gnu.org https://lists.gnu.org/mailman/listinfo/autoconf
