Fix quote() function to escape backslashes but not minus signs

The delimiter character isn't special in character square brackets,
and neither is the backslash. So '\-\' means just a range of backslash
to backslash, and the minus sign isn't included at all.

Substitution tested with GNU Solaris 9 sed programs.

Originally noticed by Kristoffer Grundstr?m.

Bug-Debian: https://bugs.debian.org/754057

diff --git a/Makefile.SH b/Makefile.SH
index ee12747..8f4fbe0 100755 (executable)
--- a/Makefile.SH
+++ b/Makefile.SH
@@ -5,7 +5,7 @@
 quote() {
        case "$1" in
        '') echo "''" ;;
-       *)  echo "$1" | sed 's/\([^a-zA-Z0-9.:_\-\/]\)/\\\1/g' ;;
+       *)  echo "$1" | sed 's/\([^a-zA-Z0-9.:_/-]\)/\\\1/g' ;;
        esac
 }