Prevent missing characters in Sway transcription output

baml_src/delivery.baml

@@ -17,13 +17,56 @@ function run_delivery_command(program: string, args: string[], stdin: string?) -
     output.ok()
 }
 
+// Chromium treats wtype's fourteenth generated keycode as Backspace.
+function wtype_chunks(transcript: string) -> string[] {
+    let chunks: string[] = [];
+    let chunk = "";
+    let characters: string[] = [];
+    for (let character in transcript.chars()) {
+        if (!characters.includes(character) && characters.length() == 13) {
+            chunks.push(chunk);
+            chunk = "";
+            characters = [];
+        }
+        chunk += character;
+        if (!characters.includes(character)) {
+            characters.push(character)
+        }
+    }
+    if (chunk != "") {
+        chunks.push(chunk)
+    }
+    chunks
+}
+
+function type_text(transcript: string) -> bool {
+    for (let chunk in wtype_chunks(transcript)) {
+        if (!run_delivery_command("wtype", ["-"], chunk)) {
+            return false;
+        }
+    }
+    true
+}
+
 function deliver_text(transcript: string, mode: DeliveryMode) -> bool {
     match (mode) {
-        DeliveryMode.Type => run_delivery_command("wtype", [transcript], null),
+        DeliveryMode.Type => type_text(transcript),
         DeliveryMode.Copy => {
             run_delivery_command("wl-copy", [], transcript)
                 || run_delivery_command("xclip", ["-selection", "clipboard"], transcript)
                 || run_delivery_command("xsel", ["--clipboard", "--input"], transcript)
         },
     }
 }
+
+test "wtype chunks avoid the Chromium backspace keycode" {
+    assert.equal(
+        wtype_chunks("Okay, I think we're ready to do steps three and four."),
+        ["Okay, I think we", "'re ready to do steps three and ", "four."],
+    )
+}
+
+test "wtype chunks split only for a fourteenth distinct character" {
+    assert.equal(wtype_chunks("abcdefghijklmmlkjihgfedcba"), ["abcdefghijklmmlkjihgfedcba"]);
+    assert.equal(wtype_chunks("abcdefghijklmn"), ["abcdefghijklm", "n"])
+}