use a variable to hold the regex

single quote regexps in variables to make it work with bash-3.1

diff --git a/dracut-functions b/dracut-functions
index 97de9b4..d4caacf 100755 (executable)
--- a/dracut-functions
+++ b/dracut-functions
@@ -107,11 +107,13 @@ inst_binary() {
            derror "dracut cannot create an initrd."
            exit 1
        fi
-       [[ $line =~ ([^ ]*/lib[^/]*/[^ ]*\.so[^ ]*) ]] || continue
+       so_regex='([^ ]*/lib[^/]*/[^ ]*\.so[^ ]*)'
+       [[ $line =~ $so_regex ]] || continue
        FILE=${BASH_REMATCH[1]}
        [[ -f ${initdir}$FILE ]] && continue
        # see if we are loading an optimized version of a shared lib.
-       if [[ $FILE =~ ^(/lib[^/]*).* ]]; then
+       lib_regex='^(/lib[^/]*).*'
+       if [[ $FILE =~ $lib_regex ]]; then
             TLIBDIR=${BASH_REMATCH[1]}
             BASE="${FILE##*/}"
            # prefer nosegneg libs, then unoptimized ones.
@@ -137,7 +139,8 @@ inst_script() {
     read -r -n 80 line <"$1"
     # If debug is set, clean unprintable chars to prevent messing up the term
     [[ $debug ]] && line=$(echo -n "$line" | tr -c -d '[:print:][:space:]')
-    [[ $line =~ (#! *)(/[^ ]+).* ]] || return 1
+    shebang_regex='(#! *)(/[^ ]+).*'
+    [[ $line =~ $shebang_regex ]] || return 1
     inst "${BASH_REMATCH[2]}" && inst_simple "$@"
 }