Insert at-search with ')' key

README.md

@@ -109,6 +109,7 @@ Search functions returning type `Type` in `Module`s.  As this search typically t
 
 **Limitations**
 
+  * It does not work with Julia >= 1.2.
   * Running `@searchreturn` for many modules may be slow for the *first* run.  Thus, searching from all modules (i.e., not specifying `Module` arguments) may take tens of seconds to minutes, depending of what are loaded.  Searching within `Base` takes about 30 seconds. After `DifferentialEquations` is loaded, searching for all modules takes 1.5 minutes.  Note that searching from the same module for the second time is fast (a few seconds), even if different `Type` is specified.
   * The functions must be executed (JIT'ed) once for `@searchreturn` to find their returned by type.
   * Any IO operations (like printing in REPL) would be slow while the search is active in background.
@@ -149,7 +150,8 @@ Configuration interface for `InteractiveCodeSearch`.
 
 ```julia
 using InteractiveCodeSearch
-InteractiveCodeSearch.CONFIG.interactive_matcher = `peco`  # default in terminal
+InteractiveCodeSearch.CONFIG.interactive_matcher = `fzf ...`  # default in terminal
+InteractiveCodeSearch.CONFIG.interactive_matcher = `peco`
 InteractiveCodeSearch.CONFIG.interactive_matcher = `percol`
 InteractiveCodeSearch.CONFIG.interactive_matcher =
     `rofi -dmenu -i -p "🔎"`  # use GUI matcher (default in non-terminal
@@ -161,6 +163,8 @@ InteractiveCodeSearch.CONFIG.open = less  # use Base.less to read code
 InteractiveCodeSearch.CONFIG.auto_open = true   # default
 InteractiveCodeSearch.CONFIG.auto_open = false  # open matcher even when there
                                                 # is only one candidate
+InteractiveCodeSearch.CONFIG.trigger_key = ')'      # insert "@search" on ')' (default)
+InteractiveCodeSearch.CONFIG.trigger_key = nothing  # disable shortcut
 ```
 
 **Using InteractiveCodeSearch.jl by default**

src/InteractiveCodeSearch.jl

@@ -67,6 +67,7 @@ mutable struct SearchConfig  # CONFIG
     open
     interactive_matcher::Cmd
     auto_open::Bool
+    trigger_key::Union{Nothing,Char}
 end
 
 maybe_identifier(s) = !startswith(string(s), "#")
@@ -267,6 +268,8 @@ InteractiveCodeSearch.CONFIG.open = less  # use Base.less to read code
 InteractiveCodeSearch.CONFIG.auto_open = true   # default
 InteractiveCodeSearch.CONFIG.auto_open = false  # open matcher even when there
                                                 # is only one candidate
+InteractiveCodeSearch.CONFIG.trigger_key = ')'      # insert "@search" on ')' (default)
+InteractiveCodeSearch.CONFIG.trigger_key = nothing  # disable shortcut
 ```
 
 ## Using InteractiveCodeSearch.jl by default
@@ -283,6 +286,7 @@ const CONFIG = SearchConfig(
     edit,                       # open
     `peco`,                     # interactive_matcher
     true,                       # auto_open
+    ')',                        # trigger_key
 )
 
 should_eval(::Any) = false
@@ -551,10 +555,12 @@ end
 
 function __init__()
     CONFIG.interactive_matcher = choose_interactive_matcher()
+    setup_keybinds()
 end
 
 include("taskmanager.jl")
 include("history.jl")
 include("return.jl")
+include("keybinds.jl")
 
 end # module

src/keybinds.jl

@@ -0,0 +1,59 @@
+using REPL
+using REPL: LineEdit
+
+function setup_keybinds()
+    schedule(Task(setup_keybinds_background))
+    return
+end
+
+function setup_keybinds_background()
+    try
+        setup_keybinds_impl()
+    catch err
+        @error(
+            "Unexpected error from `setup_keybinds_impl`",
+            exception = (err, catch_backtrace()),
+        )
+    end
+end
+
+function setup_keybinds_impl()
+    # This is why we need https://github.com/JuliaLang/julia/pull/29896...
+    for _ in 1:20
+        try
+            Base.active_repl.interface.modes[1].keymap_dict
+            @goto ok
+        catch
+        end
+        sleep(0.05)
+    end
+    @warn "Failed to wait for REPL"
+    return
+    @label ok
+
+    trigger_key = CONFIG.trigger_key
+    if trigger_key === nothing
+        @debug "`trigger_key` is `nothing`; not defining a shortcut key"
+        return
+    end
+    trigger_key::Char
+
+    repl = Base.active_repl
+    repl isa REPL.LineEditREPL || return
+    insert_search = function(s, _...)
+        if isempty(s) || position(LineEdit.buffer(s)) == 0
+            LineEdit.edit_insert(s, "@search")
+        else
+            LineEdit.edit_insert(s, trigger_key)
+        end
+    end
+    new_keymap = Dict{Any,Any}(trigger_key => insert_search)
+
+    main_mode = repl.interface.modes[1]
+    main_mode.keymap_dict = LineEdit.keymap_merge(main_mode.keymap_dict,
+                                                  new_keymap)
+    return
+end
+
+precompile(Tuple{typeof(setup_keybinds)})
+precompile(Tuple{typeof(setup_keybinds_background)})