In a bash completion script, suppose
COMPREPLY=(aa/ba/ aa/bb/). When the script is invoked, the completion options looks like this to the user:
$ foo aa/b<TAB> aa/ba/ aa/bb/
However, I want to have a bit more control over how these options are displayed. In particular, I want to show only a substring of each COMPREPLY option to the user, similar to how directory completion works in bash now:
$ foo aa/b<TAB> ba/ bb/
Is there any way of doing this in bash?
I was having the same problem and I fixed it by adjusting how I bound the completion function to the command. I know this works when you are dealing with actual files in the filesystem, I think it will work with any sort of file path like options, but I'm not sure.
complete -F _fubar fubar
complete -o filenames -F _fubar fubar
For more details: Programmable Completion Builtins
This piece of code taken from debian sid /etc/bash_completion should help:
# Remove colon-word prefix from COMPREPLY items
while [ $((--i)) -ge 0 ]; do