[ANN?] Fzf (fuzzy search) for REPL history

Package Announcements
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By wrapping the fzf (fzf_jll and JLFzf) (I realize it should probably just be called Fzf.jl but name is then too short (since potentially one can make a julia implementation of Fzf)

now one can have a cool fuzzy search experience, demo: https://streamable.com/jxdjx9

by adding this to startup.jl: Fzf Julia REPL · GitHub , (triggered by Ctrl-f)

the eventual goal is to add this to OhMyREPL

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awesome. I am already addicted to fzf + fish.

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Ctrl-f is already used for forward one character (as in emacs). I install your package and the gist, and find that Ctrl-f still does forward one character rather than fuzzy history search. Am I missing something?

(btw. I have successfully ignored config chores in favor of work today, but was unable to resist here.)

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ah, you can just change ^f in startup.jl to something else then

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I see. I looks like I have to choose something that is not already bound. In my case ^q works. But, I’m using default keybindings (linux, if that matters). fzf errors out complaining that the list (my repl history) is too long (190K lines). If I delete repl_history.jl then your package + init code do work !

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oh interesting, I didn’t know fzf would complain, ehh, so you can probably hack the call in startup.jl to take the last 10k lines maybe

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FYI, here is another setup for using fzf with https://github.com/tkf/InteractiveCodeSearch.jl

using InteractiveCodeSearch
InteractiveCodeSearch.CONFIG.interactive_matcher = `fzf`
@search show             # search method definitions of show
@searchmethods 1         # search methods defined for integer
@searchhistory           # search history

If you have pygmentize, you can have multi-line preview with syntax highlighting:

InteractiveCodeSearch.CONFIG.interactive_matcher = `fzf --preview 'echo {} | sed "s/⏎/\n/g" | pygmentize -l jl'`
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thanks to @denius , using Julia’s IOBuffer solved the problem of “repl history too long”. Also now that when selecting a entry, the prompt mode will be switched automatically (i.e to Pkg> or help> or shell> etc.)

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Many thanks for this. I tried to incorporate it into my startup.jl but got an error because of a comma missing at the end of line 9 in your gist.

Also, my startup.jl looks like this:

atreplinit() do repl
   try
     @info "importing JLFzf"
     @eval import REPL
     @eval import REPL.LineEdit
     @eval import JLFzf
     mykeys = Dict{Any,Any}(
         # primary history search: most recent first
         "^R" => function (mistate, o, c)
             line = JLFzf.inter_fzf(JLFzf.read_repl_hist(),
                                    "--read0",
                                    "--tiebreak=index",
                                    "--height=80%");
             JLFzf.insert_history_to_repl(mistate, line)
         end,
     )
     function customize_keys(repl)
         repl.interface = REPL.setup_interface(repl; extra_repl_keymap = mykeys)
     end
     customize_keys(repl)
   catch e
     @error "error while importing JLFzf" e
   end

  # similar blocks for other packages that are imported at startup...
end

I had to remove the const in the declaration of mykeys because Julia complained that

ERROR: LoadError: syntax: unsupported `const` declaration on local variable

How would one may mykeys a const in a case like this?

1 Like
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ah, sorry about the typo. Btw, now Fzf is integrated with OhMyREPL, you can use that and make startup.jl cleaner :wink: . If it’s not in global scope, it’s fine for not being const I guess.

3 Likes
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Wonderful. Thanks!