bash_function: added pf

it's a simple function for me to find all my projects with three key
presses, and it shows me this nice fzf menu with all of them (yay!)

.config/bash/functions

@@ -1,25 +1,32 @@
 # vim: ft=sh
 
+pf() {
+    # project finder
+    root_dir="$HOME/docs/src"
+    selected_dir=$(find "$root_dir" -maxdepth 1 -type d | sed "s:$root_dir::;s:/::;/^$/ d" | fzf)
+    cd "$root_dir"/"$selected_dir" || return
+}
+
 xb() {
     # function for handling xbps in a nicer way
     case $1 in
         install | i)
-            sudo xbps-install ${@:2}
+            sudo xbps-install "${@:2}"
             ;;
         remove | r)
-            sudo xbps-remove -R ${@:2}
+            sudo xbps-remove -R "${@:2}"
             ;;
         query | q)
-            xbps-query ${@:2}
+            xbps-query "${@:2}"
             ;;
         search | s)
-            xbps-query -Rs ${@:2}
+            xbps-query -Rs "${@:2}"
             ;;
         upgrade | u)
             sudo xbps-install -Su
             ;;
         locate | l)
-            xlocate ${@:2}
+            xlocate "${@:2}"
             ;;
         *)
             printf "Usage:\n"