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I'm using GNU bash, version 5.0.17(1)-release (x86_64-pc-linux-gnu). How do I see a preview of what happens if I press tab to autocomplete, similar to a fish shell. (Sorry, I'm new, so I may not be using the right terminology)

Joshua Foo JF
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  • You mean what you see if you hit tab twice and there are more than one options? – terdon May 13 '21 at 13:30
  • No, more of like a definite function. So for instance mkdir, when i type mkd, it shows "ir" as greyed text – Joshua Foo JF May 13 '21 at 14:37
  • Right, OK. So exactly what fish does. I was thinking maybe the list of completions offered on double-tab by bash would be enough. I don't think you can do what you want in bash. Or, rather, I don't think you can do it without a pretty complicated program written specifically for that. There's no bash option for it as far as I know. But let's see if anyone can come up with something clever. Could you please add a screenshot from fish showing what you mean for those not familiar with it? – terdon May 13 '21 at 14:55
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    Somehow relating: https://unix.stackexchange.com/q/109366/315749 – fra-san May 13 '21 at 15:12
  • I see haha, that's really a pity. The intended outcome would be something like what @fra-san posted above. Thanks for all your help nonetheless! – Joshua Foo JF May 15 '21 at 07:26

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The link from @fra-san seems to be an answer. It uses ble.sh ―Bash Line Editor― for Syntax highlighting, Enhanced completion and more.

https://unix.stackexchange.com/a/646375

alchemy
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