feat: add raw input hook (closes #180)

CHANGELOG.md

@@ -65,6 +65,7 @@ will be ran on startup
 - Message of the day on startup (`hilbish.motd`), mainly intended as quick
 small news pieces for releases. It is printed by default. To disable it,
 set `hilbish.opts.motd` to false.
+- `hilbish.rawInput` hook for input from the readline library
 
 ### Changed
 - **Breaking Change:** Upgraded to Lua 5.4.

lua.go

@@ -48,6 +48,10 @@ func luaInit() {
 		}
 	})
 
+	lr.rl.RawInputCallback = func(r []rune) {
+		hooks.Em.Emit("hilbish.rawInput", string(r))
+	}
+
 	// Add more paths that Lua can require from
 	err := util.DoString(l, "package.path = package.path .. " + requirePaths)
 	if err != nil {

readline/instance.go

@@ -198,6 +198,8 @@ type Instance struct {
 
 	ViModeCallback func(ViMode)
 	ViActionCallback func(ViAction, []string)
+
+	RawInputCallback func([]rune) // called on all input
 }
 
 // NewInstance is used to create a readline instance and initialise it with sane defaults.

readline/readline.go

@@ -94,6 +94,7 @@ func (rl *Instance) Readline() (string, error) {
 
 		rl.skipStdinRead = false
 		r := []rune(string(b))
+		rl.RawInputCallback(r[:i])
 
 		if isMultiline(r[:i]) || len(rl.multiline) > 0 {
 			rl.multiline = append(rl.multiline, b[:i]...)