diff --git a/bashrc b/bashrc
index a8c2117..b6354cd 100755
--- a/bashrc
+++ b/bashrc
@@ -176,9 +176,10 @@ null type pacmatic && {
     export PACMAN="pacmatic"
 }
 
-alias ubuntu-upgrade="sudo apt-get autoremove --yes && sudo apt-get update --yes && sudo apt-get upgrade --yes"
-alias arch-upgrade="sudo pacman -Syu"
-alias port-upgrade="sudo port selfupdate && sudo port upgrade outdated && sudo port uninstall leaves"
+null type apt-get && \
+    alias aupgrade="sudo apt-get autoremove --yes && sudo apt-get update --yes && sudo apt-get upgrade --yes"
+null type port && \
+    alias pupgrade="sudo port selfupdate && sudo port upgrade outdated && sudo port uninstall leaves"
 
 if iscygwin; then
     null type windate || alias windate="/c/Windows/System32/cmd.exe //c 'echo %DATE%-%TIME%'"
@@ -216,12 +217,6 @@ tmux(){
     fi
 }
 
-__my_moc_state(){
-    type mocp >/dev/null 2>&1 || return
-    test "`mocp -Q %state 2>/dev/null`" == PLAY || return
-    printf "$1" "`mocp -Q %title 2>/dev/null`"
-}
-
 mcrypt-stream(){
     test $# -eq 2 || return 1
     case $1 in
@@ -346,6 +341,7 @@ open_file(){
         cmd.exe //c start "" "$@"
     elif isdarwin
     then
+        touch "$@"
         open "$@"
     elif islinux
     then
@@ -379,6 +375,12 @@ convmv-sjis2utf8-notest(){
     convmv -r -f sjis -t utf8 * --notest
 }
 
+__my_moc_state(){
+    type mocp >/dev/null 2>&1 || return
+    test "`mocp -Q %state 2>/dev/null`" == PLAY || return
+    printf "$1" "`mocp -Q %title 2>/dev/null`"
+}
+
 __my_parse_svn_branch() {
     local LANG=C
     local svn_url=$(svn info 2>/dev/null | sed -ne 's#^URL: ##p')
diff --git a/emacs.el b/emacs.el
index 9b49dfb..e0f68b9 100644
--- a/emacs.el
+++ b/emacs.el
@@ -634,10 +634,21 @@ drill-instructor.el"
 (add-hook 'diff-mode-hook
           (lambda ()
             (view-mode 1)
-            (set-face-foreground 'diff-file-header-face nil)
-            (set-face-foreground 'diff-header-face nil)
+            (let ((s 'diff-header))
+              (set-face-foreground s nil)
+              (set-face-background s nil)
+              (set-face-bold-p s t))
+            (let ((s 'diff-file-header))
+              (set-face-foreground s nil)
+              (set-face-background s nil)
+              (set-face-bold-p s t))
             (set-face-foreground 'diff-index-face "blue")
-            (set-face-foreground 'diff-hunk-header-face "cyan")
+            (let ((s 'diff-hunk-header))
+              (set-face-foreground s "cyan")
+              (set-face-bold-p s nil))
+            (let ((s 'diff-context))
+              ;; (set-face-foreground s "white")
+              (set-face-bold-p s t))
             (set-face-foreground 'diff-context-face nil)
             (set-face-foreground 'diff-removed-face "red")
             (set-face-foreground 'diff-added-face "green")
diff --git a/setup.sh b/setup.sh
index 2d5c5b5..d791dee 100755
--- a/setup.sh
+++ b/setup.sh
@@ -3,7 +3,13 @@
 mkdir -p ~/.my/log
 mkdir -p ~/.local/bin
 
-_my_install_script(){
+gen_source_script(){
+    # _gen_source_script file lines
+    test $# -eq 2 || return 1
+    head -n $2 $1 | \grep -v '^#!' | sed -e 's/^..//g'
+}
+
+get_install_script(){
     local dir="$HOME/.local/bin"
     mkdir -p "$dir"
     for f in "$@"
@@ -23,7 +29,7 @@ _my_install_script(){
     done
 }
 
-_my_install_symlink_script(){
+install_symlink_script(){
     mkdir -p "$HOME/.local/bin/"
     for f in "$@"
     do
@@ -31,7 +37,9 @@ _my_install_symlink_script(){
     done
 }
 
-_my_git_config(){
+git_config(){
+    type git >/dev/null 2>&1 || return 1
+
     git config --global user.name '10sr'
     git config --global user.email '8slashes+git@gmail.com'
     git config --global core.autocrlf false
@@ -53,17 +61,29 @@ _my_git_config(){
     # git config --global alias.my-ls "ls-files | xargs ls"
     # git config --global alias.ll "!git ls-files | xargs ls -l -CFG --color=auto --time-style=long-iso"
     git config --global alias.addi "add -i"
-    if false; then
+    if false iswindows; then
         git config --global core.fileMode false
     fi
 }
 
-_gen_source_script(){
-    # _gen_source_script file lines
-    test $# -eq 2 || return 1
-    head -n $2 $1 | \grep -v '^#!' | sed -e 's/^..//g'
+mac_defaults(){
+    test "`uname`" = Darwin || return 1
+
+    # add quit entry in menu
+    defaults write com.apple.finder QuitMenuItem -bool YES
+    # show full path on titlebar
+    defaults write com.apple.finder _FXShowPosixPathInTitle -bool YES
+    # do not show desktop icons
+    defaults write com.apple.finder CreateDesktop -boolean false
+
+    killall finder
+
+    # disable dashboard
+    #defaults write com.apple.dashboard mcx-disabled -bool YES
 }
 
-_my_install_script http://www.frexx.de/xterm-256-notes/data/colortable16.sh http://www.frexx.de/xterm-256-notes/data/256colors2.pl
+get_install_script http://www.frexx.de/xterm-256-notes/data/colortable16.sh http://www.frexx.de/xterm-256-notes/data/256colors2.pl
+
+git_config
 
-type git >/dev/null 2>&1 && _my_git_config
+mac_defaults
diff --git a/xprograms b/xprograms
index 129723d..4b8d985 100755
--- a/xprograms
+++ b/xprograms
@@ -1,6 +1,6 @@
 #!/bin/sh
 # Programs run in background when starting x.
-# Japanese IM settings are not included in this list.
+# Japanese IM settings are not included in this script.
 
 _feh(){
     test -f "$HOME/.fehbg" &&
@@ -64,4 +64,3 @@ for p in $@
 do
     _$p
 done
-