Revert "Implement opoo in bash"

This reverts commit 2498d99a143d0e50e92a0aa60316d47c9ea83edc.

Library/Homebrew/brew.sh

@@ -1,35 +1,20 @@
 HOMEBREW_VERSION="0.9.9"
 
-o() {
+onoe() {
+  if [[ -t 2 ]] # check whether stderr is a tty.
+  then
+    echo -ne "\033[4;31mError\033[0m: " >&2 # highlight Error with underline and red color
+  else
+    echo -n "Error: " >&2
+  fi
   if [[ $# -eq 0 ]]
   then
-    /bin/cat
+    /bin/cat >&2
   else
-    echo "$*"
+    echo "$*" >&2
   fi
 }
 
-highlight() {
-  if [[ -t 1 ]] # check whether stdout is a tty.
-  then
-    echo -ne "\033[4;$1m$2\033[0m"
-  else
-    echo -n "$2"
-  fi
-}
-
-opoo() {
-  highlight 33 Warning >&2 # yellow
-  echo -n ": " >&2
-  o "$@" >&2
-}
-
-onoe() {
-  highlight 31 Error >&2 # red
-  echo -n ": " >&2
-  o "$@" >&2
-}
-
 odie() {
   onoe "$@"
   exit 1