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On my Ubuntu machine, I can do this

emacs $(which first-part-of-executable<tab>

and bash will tab-complete the full executable name. I enabled this myself by adding

complete -c which

to my .bashrc, because I only want which to complete with executable names.

For some reason, on my RHEL5 machine, the tab completion works for which within the $(, but then moves back to filename completion for the executable.

How can I make bash complete which within parentheses?

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