* usr/lib/byobu/distro, usr/lib/byobu/include/common,

usr/lib/byobu/logo, usr/share/byobu/profiles/bashrc:
  - save a couple of forks in the fast path
  - load BYOBU_DISTRO into the environment as we need this in
    multiple places

debian/changelog

@@ -1,6 +1,10 @@
 byobu (5.55) unreleased; urgency=low
 
-  * UNRELEASED
+  * usr/lib/byobu/distro, usr/lib/byobu/include/common,
+    usr/lib/byobu/logo, usr/share/byobu/profiles/bashrc:
+    - save a couple of forks in the fast path
+    - load BYOBU_DISTRO into the environment as we need this in
+      multiple places
 
  -- Dustin Kirkland <kirkland@ubuntu.com>  Wed, 07 Aug 2013 12:49:27 +0100
 

usr/lib/byobu/distro

@@ -29,8 +29,7 @@ __distro() {
 		# user defined
 		true
 	else
-		get_distro
-		DISTRO="$_RET"
+		DISTRO="$BYOBU_DISTRO"
 	fi
 	color bold2; printf "%s" "$DISTRO"; color --
 }

usr/lib/byobu/include/common

@@ -57,5 +57,7 @@ if [ -z "${BYOBU_INCLUDED_LIBS}" ]; then
 
 	. "${BYOBU_PREFIX}/lib/${PKG}/include/shutil"
 	. "${BYOBU_PREFIX}/lib/${PKG}/include/constants"
+	get_distro || true
+	export BYOBU_DISTRO="$_RET"
 	BYOBU_INCLUDED_LIBS=1
 fi

usr/lib/byobu/logo

@@ -31,8 +31,7 @@ __logo() {
 		printf "%s" "$LOGO"
 		return
 	fi
-	get_distro
-	local distro="$(printf "%s" "$_RET" | $BYOBU_SED 'y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/')"
+	local distro="$(printf "%s" "$BYOBU_DISTRO" | $BYOBU_SED 'y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/')"
 	case "$distro" in
 		*ubuntu*)
 			if $MARKUP; then

usr/share/byobu/profiles/bashrc

@@ -16,15 +16,18 @@
 #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 # Ensure that we're in a tmux or screen session
-if [ -n "$TMUX" ] || (printf "$TERMCAP" | grep -qs "screen"); then
+if [ -n "$TMUX" ] || [ "${TERMCAP#*screen}" != "${TERMCAP}" ]; then
 	# Ensure that we're in bash, in a byobu environment
 	if [ -n "$BYOBU_BACKEND" ] && [ "$SHELL" = "/bin/bash" ]; then
-		if [ -z "$DISTRO" ] && grep -qs "^Ubuntu" /etc/issue; then
+		case "$BYOBU_DISTRO" in
+			"Ubuntu")
 				# Use Ubuntu colors (grey / aubergine / orange)
 				PS1="${debian_chroot:+($debian_chroot)}\[\e[38;5;245m\]\u\[\e[00m\]@\[\e[38;5;5m\]\h\[\e[00m\]:\[\e[38;5;172m\]\w\[\e[00m\]❭ "
-		else
+			;;
+			*)
 				# Use Byobu colors (green / blue / red)
 				PS1="${debian_chroot:+($debian_chroot)}\[\e[00;32m\]\u\[\e[00m\]@\[\e[00;36m\]\h\[\e[00m\]:\[\e[00;31m\]\w\[\e[00m\]\$ "
-		fi
+			;;
+		esac
 	fi
 fi