How can I get vi editing mode to work in GHCi?
I'm using version 7.10.3.
I tried Prelude> :set editor vi, but to no effect.
I also have these lines in my ~/.inputrc.
set editing-mode vi
set keymap vi
.
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Ηλεκτρολόγος Μηχανικός
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After you `:set editor vi`, what happens when you try to `:edit` a file? What do you mean "to no effect"? – user2407038 Mar 09 '16 at 01:52
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I do not mean to edit a file. "To no effect" means I can't get vi editing mode to work in GHCi, like it does not work when I press ESC to get into command mode to navigate/edit a text. In Bash shell i can do it. – Ηλεκτρολόγος Μηχανικός Mar 09 '16 at 02:11
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1Possible duplicate of [How to customize the readline keybindings of ghci](http://stackoverflow.com/questions/1825547/how-to-customize-the-readline-keybindings-of-ghci) – amalloy Mar 09 '16 at 02:21
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there is some *VI editing mode* in GHCi? ... Or are you talking about setting up some GHCi REPL support for VI? – Random Dev Mar 09 '16 at 05:13
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@Carsten yes there is – Ηλεκτρολόγος Μηχανικός Mar 09 '16 at 05:34
2 Answers
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GHCi now uses the Haskeline library for command line editing (which has been true for quite a while now), and it does indeed have a vi mode. The configuration file is ~/.haskeline and the line you want is:
editMode: Vi
Documented here: https://github.com/judah/haskeline/wiki/UserPreferences
Chris Stryczynski
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Levi Pearson
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I've just started using it and I noticed that the `;` and `,` commands to repeat `f` or `F` commands in one or the other direction do not work... – Enlico Nov 13 '19 at 19:08
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1[Issue #60](https://github.com/judah/haskeline/issues/60) on GitHub is just about this. – Enlico Nov 13 '19 at 19:37
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This works without any issues on MacOS with The Glorious Glasgow Haskell Compilation System, version 9.4.3
ghci> :set editor vi
ghci> :edit <yourfilename>
tanvi
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