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I'm using Ubuntu bash, and when I try to autocomplete an environment variable while holding shift, the variable does not expand. Instead, I have to release the shift key. Is there any way to allow the expansion to occur while holding shift?

> cd $HOM  # desired: TAB+SHIFT to get $HOME
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up vote 1 down vote accepted

Just add the following line to your ~/.inputrc file:

"\e[Z": complete

For the details of why you need to do this see this question: .inputrc TAB not behaving as expected and the available bash readline commands.

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