Add user-definable modes

src/content/controller_content.ts

@@ -138,7 +138,10 @@ function* ParserController() {
                 // unbounded length.
                 keyEvents.push(keyevent)
 
-                const response = parsers[contentState.mode](keyEvents)
+                const response = (
+                    parsers[contentState.mode] ||
+                    (keys => generic.parser(contentState.mode + "maps", keys))
+                )(keyEvents)
                 logger.debug(
                     currentMode,
                     contentState.mode,

src/excmds.ts

@@ -2526,6 +2526,8 @@ export function version() {
  *  If you're looking for a way to temporarily disable Tridactyl, `mode ignore` might be what you're looking for.
  *
  *  Note that when in ignore mode, Tridactyl will not switch to insert mode when focusing text areas/inputs. This is by design.
+ *
+ *  **New feature:** you can add modes as simply as adding binds with `bind --mode=[newmodename]` and then enter the mode with `mode [newmodename]`.
  */
 //#content
 export function mode(mode: ModeName) {
@@ -2972,9 +2974,11 @@ function parse_bind_args(...args: string[]): bind_args {
     if (args[0].startsWith("--mode=")) {
         result.mode = args.shift().replace("--mode=", "")
     }
-    if (!mode2maps.has(result.mode)) throw new Error("Mode " + result.mode + " does not yet have user-configurable binds.")
-
-    result.configName = mode2maps.get(result.mode)
+    if (!mode2maps.has(result.mode)) {
+        result.configName = result.mode + "maps"
+    } else {
+        result.configName = mode2maps.get(result.mode)
+    }
 
     const key = args.shift()
     // Convert key to internal representation

src/parsers/genericmode.ts

@@ -5,6 +5,7 @@ import * as keyseq from "@src/lib/keyseq"
 
 export function parser(conf, keys): keyseq.ParserResponse {
     let maps: any = config.get(conf)
+    if (maps === undefined) throw new Error("No binds defined for this mode. Reload page with <C-r> and add binds, e.g. :bind --mode=[mode] <Esc> mode normal")
 
     // If so configured, translate keys using the key translation map
     if (config.get("keytranslatemodes")[conf] === "true") {