. ../lib.sh
-hostname=`hostname`
+# Helper functions.
+terminal_info() {
+ infocmp "$@" 2>&1
+}
+terminal_available() {
+ terminal_info "$@" > /dev/null
+}
+# Check if `infocmp` is available.
+if ! infocmp > /dev/null 2>&1; then
+ echo 'Warning: `infocmp` not available! 256color checks will fail.'
+ echo
+fi
+
+
+# Create private temporary directory used by many tools (including GNU screen
+# and tmux).
+mkdir -p ~/.tmp
+chmod 0700 ~/.tmp
# Generate ~/.less with lesskey.
lesskey lesskey
chmod 0600 ~/.less
-# As screen-256color is not widely supported use it only on machines known to
-# work.
generate cat screenrc .in
-if [ $hostname != asp -a $hostname != systemofadown ]; then
+# As screen-256color is not widely supported use it only on machines where the
+# matching terminfo entry is available. This also requires a terminal emulator
+# which supports 256 colors. Also used for tmux.
+use_256colors=
+if terminal_available screen-256color; then
+ # Called through SSH connection, assume the local system supports 256
+ # colors.
+ if test -n "$SSH_CONNECTION"; then
+ use_256colors=1
+ # We have rxvt-unicode installed, check if it supports 256 colors.
+ elif installed urxvt; then
+ # Thanks to deryni in #rxvt-unicode on Freenode (2012-10-14 22:54
+ # CEST) for the strings/grep idea. The grep check is for "correct" 256
+ # rxvt-unicode binaries (e.g. Debian's rxvt-unicode-256color), the
+ # terminal_info check for manual installations which modify
+ # rxvt-unicode's terminfo entry.
+ urxvt_path=`which urxvt`
+ urxvt_grep=`strings "$urxvt_path" | grep '^TERM=rxvt-')`
+ if test x"$urxvt_grep" = 'xTERM=rxvt-unicode-256color' \
+ || terminal_info rxvt-unicode \
+ | grep -F 'colors#256' >/dev/null; then
+ use_256colors=1
+ fi
+ # Check if XTerm supports 256 colors (not a perfect check, but most XTerm
+ # support 256 colors).
+ elif terminal_available xterm-256color; then
+ use_256colors=1
+ fi
+fi
+if test -z "$use_256colors"; then
+ echo screenrc: removing 256 colors
sed 's/Enable 256 color/Disable 256 color/;
s/screen-256color/screen/' screenrc > screenrc.tmp
mv screenrc.tmp screenrc
fi
# Some options are only necessary when running as root. They are marked as
# "(ROOT)".
-if [ x`id -u` != x0 ]; then
+if test "`id -u`" -ne 0; then
echo screenrc: removing root options
grep -v '(ROOT)' screenrc > screenrc.tmp
mv screenrc.tmp screenrc
fi
-# I use some features of screen which are only in Git. Drop them on machines
-# which have older versions. They are marked as "(GIT)".
-if [ $hostname != asp -o x`id -u` = x0 ]; then
+# I use some features of GNU screen which are only in Git or very recent GNU
+# screen versions. Drop them on machines which have older versions. They are
+# marked as "(GIT)".
+if test -d "$HOME/development/shell/screen"; then
echo screenrc: removing Git features
grep -v '(GIT)' screenrc > screenrc.tmp
mv screenrc.tmp screenrc
fi
# Display current battery charge on computers with a battery. Necessary lines
# are marked as "(BATTERY)".
-if [ ! -d /sys/class/power_supply/BAT0 ]; then
+if test ! -d /sys/class/power_supply/BAT0; then
echo screenrc: removing battery display
grep -v '(BATTERY)' screenrc > screenrc.tmp
mv screenrc.tmp screenrc
fi
+if installed tmux; then
+ generate perl tmux.conf ./bin/remove-continuation.pl
+
+ # 256 colors not available.
+ if test -z "$use_256colors"; then
+ echo tmux.conf: removing 256 colors
+ sed 's/Enable 256 color/Disable 256 color/;
+ s/screen-256color/screen/' tmux.conf > tmux.conf.tmp
+ mv tmux.conf.tmp tmux.conf
+ fi
+ # Tmux doesn't display a warning if the shell wasn't found!
+ if test ! -x '/bin/zsh'; then
+ echo tmux.conf: removing /bin/zsh as shell
+ sed 's/zsh/sh/' tmux.conf > tmux.conf.tmp
+ mv tmux.conf.tmp tmux.conf
+ fi
+fi
+
# Htop overwrites the comments in its configuration file.
generate cat htoprc .in