portable sed invocations

diff --git a/cgilite.sh b/cgilite.sh
index 7eab08a5b4bc92691b34e7cdc3e61679f2f8d2b6..ae09497817521d8795b0e92a7f859d5bda2426a9 100755 (executable)
--- a/cgilite.sh
+++ b/cgilite.sh
@@ -32,7 +32,7 @@ HEADER(){
   # referencing HTTP_* environment variables.
   if [ -n "${cgilite_headers+x}" ]; then
     printf %s "$cgilite_headers" \
-    | sed -rn 's;^'"${1}"': ([^\r]+)\r?$;\1;i; tX; d; :X;p;q;'
+    | sed -En 's;^'"${1}"': ([^\r]+)\r?$;\1;i; tX; d; :X;p;q;'
   else
     eval "printf %s \"\$HTTP_$(printf %s "${1}" |tr a-z A-Z |tr -c A-Z _)\""
   fi
@@ -49,7 +49,7 @@ HEX_DECODE='
 '
 
 HEX_DECODE(){
-  printf -- "$(printf %s "$1" |sed -r "$HEX_DECODE")"
+  printf -- "$(printf %s "$1" |sed -E "$HEX_DECODE")"
 }
 
 if [ -z "$REQUEST_METHOD" ]; then
@@ -116,7 +116,7 @@ cgilite_value(){
     str=${str#*&${name}=}
     cnt=$((cnt - 1))
   done
-  printf -- "$(printf %s "${str%%&*}" |sed -r 's;\+; ;g;'"$HEX_DECODE")"
+  printf -- "$(printf %s "${str%%&*}" |sed -E 's;\+; ;g;'"$HEX_DECODE")"
 }
 
 cgilite_keys(){
@@ -144,7 +144,7 @@ COOKIE(){
   HEX_DECODE "$(
     HEADER Cookie \
     | grep -oE '(^|; ?)'"$1"'=[^;]*' \
-    | sed -rn "${2:-1}"'{s;^[^=]+=;;; s;\+; ;g; p;}'
+    | sed -En "${2:-1}"'{s;^[^=]+=;;; s;\+; ;g; p;}'
   )"
 }
 
@@ -165,7 +165,7 @@ HTML(){
       36?) printf '%s' ${n#36};;   # 4 octet (21 bit) chain start
     esac
   done \
-  | sed -r 's;.{7};&\n;g;' \
+  | sed -E 's;.{7};&\n;g;' \
   | while read n; do
     printf '&#%d;' $((0$n))
   done
@@ -182,7 +182,7 @@ URL(){
 
 PATH(){
   { [ $# -eq 0 ] && cat || printf %s "$*"; } \
-  | sed -r 's;^.*$;/&/;; s;/+;/;g;
+  | sed -E 's;^.*$;/&/;; s;/+;/;g;
             :X;
             s;^/\.\./;/;; s;/\./;/;g;
             tX;