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I'm wondering if this is possible in Bash, but I'd like to use tab completion to completely replace the current argument that's being expanded. I'll give an example: I'd like to have a function that moves up an arbitrary number of levels in the tree, so I can call up 2 And that would cd me 2 directories up. However, I would like to make it so that if at the number 2, I press tab, it will expand that number to being the path (either relative or absolute, either is fine). I have this almost working using the complete builtin except it will only append the text, so it will be something like up 2/Volumes/Dev/ Is it possible to replace the completed symbol? Thanks in advance :) Update: So a big thanks to chepner, because actually checking my code revealed where my bug was. I was comparing against the wrong var, and the debug code I had was causing the value to not replace. For anyone interested, here's the code (and there could be a much better way to accomplish this): # Move up N levels of the directory tree # Or by typing in some dir in the PWD # eg. Assuming your PWD is "/Volumes/Users/natecavanaugh/Documents/stuff" # `up 2` moves up 2 directories to "/Volumes/Users/natecavanaugh" # `up 2/` and pressing tab will autocomplete the dirs in "/Volumes/Users/natecavanaugh" # `up Users` navigate to "/Volumes/Users" # `up us` and pressing tab will autocomplete to "/Volumes/Users" function up { dir="../" if [ -n "$1" ]; then if [[ $1 =~ ^[0-9]+$ ]]; then strpath=$( printf "%${1}s" ); dir=" ${strpath// /$dir}" else dir=${PWD%/$1/*}/$1 fi fi cd $dir } function _get_up { local cur local dir local results COMPREPLY=() #Variable to hold the current word cur="${COMP_WORDS[COMP_CWORD]}" local lower_cur=`echo ${cur##*/} | tr [:upper:] [:lower:]` # Is the arg a number or number followed b

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