feat: add hilbish.cancel hook (closes #213)

CHANGELOG.md

@@ -76,6 +76,7 @@ disables commands being added to history.
 random errors introduced with the new Lua runtime (see [#197])
 - `bait.release(name, catcher)` removes `handler` for the named `event`
 - `exec`, `clear` and `cat` builtin commands
+- `hilbish.cancel` hook
 
 [#197]: https://github.com/Rosettea/Hilbish/issues/197
 

docs/hooks/hilbish.txt

@@ -5,3 +5,5 @@
 
 + `hilbish.vimAction` -> actionName, args > Sent when the user does a "vim action," being something
 like yanking or pasting text. See `doc vim-mode actions` for more info.
+
++ `hilbish.cancel` > Sent when the user cancels their input with Ctrl-C.

main.go

@@ -181,11 +181,14 @@ input:
 			break
 		}
 		if err != nil {
-			if err != readline.CtrlC {
+			if err == readline.CtrlC {
+				fmt.Println("^C")
+				hooks.Emit("hilbish.cancel")
+			} else {
 				// If we get a completely random error, print
 				fmt.Fprintln(os.Stderr, err)
 			}
-			fmt.Println("^C")
+			// TODO: Halt if any other error occurs
 			continue
 		}
 		var priv bool