diff --git a/fish/config/config.fish b/fish/config/config.fish
index a22fdd9..d42c2b3 100644
--- a/fish/config/config.fish
+++ b/fish/config/config.fish
@@ -1,11 +1,16 @@
 #!/usr/bin/env fish
-
-set -U FZF_COMPLETE 0
+#
 set -gx EDITOR nvim
-set -gx PGDATA /usr/local/var/postgres
-set -gx LESS "-SRXF"
-set -gx LS_COLORS 'ow=34;42;40'
+
+# enable fzf completion hotkey
+set -U FZF_COMPLETE 0
+# no line-wrapping, good for `docker ps`
+set -gx LESS "-SXF"
+# nvm plugin
 set -gx nvm_mirror http://npm.taobao.org/mirrors/node
+# change OTHER-WRITABLE color for `ls` command
+set -gx LS_COLORS 'ow=34;42;40'
+# ranger highlighting color theme
 set -gx HIGHLIGHT_OPTIONS --style=solarized-dark
 
 # tune git icon for nerdfont
@@ -20,14 +25,14 @@ set -g __fish_git_prompt_char_conflictedstate "x"
 set -g __fish_git_prompt_char_cleanstate "✔ "
 
 function append-path-if-exists
-  if test -e $argv
-    set -gx PATH $argv $PATH
+    if test -e $argv
+        set -gx PATH $argv $PATH
   end
 end
 
 function source-file-if-exists
-  if test -e $argv
-    source $argv
+    if test -e $argv
+        source $argv
   end
 end
 
@@ -39,86 +44,76 @@ append-path-if-exists /usr/local/bin
 append-path-if-exists ~/.local/bin
 append-path-if-exists ~/.yarn/bin
 append-path-if-exists /snap/bin
-#/usr/bin/xmodmap /home/klesh/.Xmodmap
 
-if which pip 1>/dev/null 2>/dev/null; and pip show virtualfish > /dev/null 2>/dev/null
-  eval (python -m virtualfish auto_activation)
+# source virtualfish if available
+if which pip &>/dev/null && pip show virtualfish &>/dev/null
+    eval (python -m virtualfish auto_activation)
 end
 
-# pronounce a English word
-function dp
-  set play afplay
-  if not which $play 2>/dev/null
-    set play ffplay -nodisp -autoexit
-  end
-  wget -O /tmp/sound.mp3 "http://dict.youdao.com/dictvoice?audio=$argv[1]&type=1">/dev/null 2>/dev/null
-  and eval $play /tmp/sound.mp3 1>/dev/null 2>/dev/null
-end
-
-# print current datetime as in plain format which could be use a filename etc
+# datetime in filename format
 function dt
-  date "+%Y%m%d-%H%M%S"
+    date "+%Y%m%d-%H%M%S"
 end
 
+# translation
 function d
-  set word $argv
-  set escaped_word (string escape --style url "$word")
-  curl -SsL "http://cn.bing.com/dict/search?q=$escaped_word" |\
-	grep -Eo '<meta name="description" content="(.+) " ?/>' |\
-	sed -E 's/<meta name="description" content="必应词典为您提供.+的释义，(.+)" ?\/>/\1/' |\
-	sed -E 's/(.*)(，)(.*)/\1 \3/' | awk -v WORD=$word '{
-		c=0;
-		print WORD;
-		for(i=1;i<=NF;i++) {
-			if(match($i, "^[a-z]+\\.|网络释义：$") != 0) {
-				if(c==0) printf "\n";
-				printf "\n";
-				c++;
-			}
-			printf "%s ",$i;
-		}
-		printf "\n";
-	}' 2>/dev/null
+    set meta (
+        curl -SsLG "http://cn.bing.com/dict/search" --data-urlencode "q=$argv" | \
+        string match -r '<meta name="description" content="必应词典为您提供.+的释义，(.+?)" />'
+    )
+    set trans (string replace -ra '\W(?=(\w+\.|网络释义：))' \n $meta[2])
+    string join \n $trans
+end
+
+# pronounciation
+function dp
+    set play afplay
+    if not which $play 2>/dev/null
+        set play ffplay -nodisp -autoexit
+    end
+    wget -O /tmp/sound.mp3 "http://dict.youdao.com/dictvoice?audio=$argv[1]&type=1" &>/dev/null
+    and eval $play /tmp/sound.mp3 1>/dev/null 2>/dev/null
 end
 
 function clean-taobao-link
-  echo "$argv" | sed 's/^\(.*\)?\(.*&\)\?\(id=[^&]\+\).*$/\1?\3/g' | xsel -sb
+    echo "$argv" | sed 's/^\(.*\)?\(.*&\)\?\(id=[^&]\+\).*$/\1?\3/g' | xsel -sb
 end
 
 # for WSL
 function sync-ssh-config
-  # sshconfig has a restricted file permission requirement which normally hard to
-  # be met on Window (i.e., syncing your config by Nextcloud on drive D).
-  # this function pour contents of files within ~/.ssh/config.d to ~/.ssh/config
-  if test -d ~/.ssh/config.d
-    rm -rf ~/.ssh/config
-    for cfg in (ls ~/.ssh/config.d)
-      cat ~/.ssh/config.d/$cfg >> ~/.ssh/config
+    # sshconfig has a restricted file permission requirement which normally hard to
+    # be met on Window (i.e., syncing your config by Nextcloud on drive D).
+    # this function pours contents of files within ~/.ssh/config.d to ~/.ssh/config
+    if test -d ~/.ssh/config.d
+        rm -rf ~/.ssh/config
+        for cfg in (ls ~/.ssh/config.d)
+            cat ~/.ssh/config.d/$cfg >> ~/.ssh/config
+        end
+        chmod 600 ~/.ssh/config
     end
-    chmod 600 ~/.ssh/config
-  end
 end
 
 function swap-caps-esc
-  setxkbmap -option caps:swapescape
+    setxkbmap -option caps:swapescape
 end
 
 function caps-to-grave
-  xmodmap -e "clear Lock"
-  xmodmap -e "keycode 66 = grave asciitilde"
+    xmodmap -e "clear Lock"
+    xmodmap -e "keycode 66 = grave asciitilde"
 end
 
+# print out all colors with their index
 function show-colors
-  bash -c '(x=`tput op` y=`printf %76s`;for i in {0..256};do o=00$i;echo -e ${o:${#o}-3:3} `tput setaf $i;tput setab $i`${y// /=}$x;done)'
+    bash -c '(x=`tput op` y=`printf %76s`;for i in {0..256};do o=00$i;echo -e ${o:${#o}-3:3} `tput setaf $i;tput setab $i`${y// /=}$x;done)'
 end
 
 # auto startx
-if test -z "$DISPLAY" -a -n "$XDG_VTNR" -a "$XDG_VTNR" -eq "1" -a -z "$STARTED"
-  set -gx STARTED true
-  startx
+if test -z "$STARTED" -a -z "$DISPLAY" -a -n "$XDG_VTNR" -a "$XDG_VTNR" -eq "1"
+    set -gx STARTED true
+    startx
 end
 
-alias k=kubectl
+alias k="kubectl"
 alias kcc="k config get-contexts"
 alias kcu="k config use-context"
 alias kgd="k get deployment"
@@ -128,7 +123,6 @@ alias kl="k logs -f --all-containers"
 alias issh='ssh -o "StrictHostKeyChecking=no" -o "UserKnownHostsFile=/dev/null"'
 alias iscp='scp -o "StrictHostKeyChecking=no" -o "UserKnownHostsFile=/dev/null"'
 
+status is-interactive && cd $last_pwd
 
 source-file-if-exists ~/.profile.fish
-
-status is-interactive && cd $last_pwd