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POHow can I replace a command line argument with tab completion?
 

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  1. POHow can I replace a command line argument with tab completion?
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    <p>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/</p> <p>Is it possible to replace the completed symbol?</p> <p>Thanks in advance :)</p> <h1>Update:</h1> <p>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.</p> <p>For anyone interested, here's the code (and there could be a much better way to accomplish this):</p> <pre><code># 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 by a slash if [[ $cur =~ ^[0-9]+/? ]]; then dir="../" strpath=$( printf "%${cur%%/*}s" ); dir=" ${strpath// /$dir}" # Is the arg just a number? if [[ $cur =~ ^[0-9]+$ ]]; then COMPREPLY=($(compgen -W "${dir}")) else if [[ $cur =~ /.*$ ]]; then cur="${cur##*/}" fi results=$(for t in `cd $dir &amp;&amp; ls -d */`; do if [[ `echo $t | tr [:upper:] [:lower:]` == "$lower_cur"* ]]; then echo "${t}"; fi done) COMPREPLY=($(compgen -P "$dir" -W "${results}")) fi else # Is the arg a word that we can look for in the PWD results=$(for t in `echo $PWD | tr "/" "\n"`; do if [[ `echo $t | tr [:upper:] [:lower:]` == "$lower_cur"* ]]; then echo "${t}"; fi; done) COMPREPLY=($(compgen -W "${results}")) fi } #Assign the auto-completion function _get for our command get. complete -F _get_up up </code></pre>
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    1. COI don't know if this is intentional, but 'up Us/' displays each of the ancestor directories, although you can't actually choose them. Neat!
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      1. POHow can I replace a command line argument with tab completion?
      1. USchepner
 

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