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Fix: Prevent backspace buffer re-emission in trackpad hidden input #106

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Rozerxshashank wants to merge 2 commits into from
+15 −11
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Fix: Prevent backspace buffer re-emission in trackpad hidden input #106

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00dbe57
fix: prevent backspace buffer re-emission in trackpad hidden input
Rozerxshashank Feb 17, 2026
17d1da3
chore: remove debug console logs as per review
Rozerxshashank Feb 17, 2026
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26 changes: 15 additions & 11 deletions src/routes/trackpad.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -19,14 +19,14 @@ function TrackpadPage() {
const bufferText = buffer.join(" + ");
const hiddenInputRef = useRef<HTMLInputElement>(null);
const isComposingRef = useRef(false);

// Load Client Settings
const [sensitivity] = useState(() => {
if (typeof window === 'undefined') return 1.0;
const s = localStorage.getItem('rein_sensitivity');
return s ? parseFloat(s) : 1.0;
});

const [invertScroll] = useState(() => {
if (typeof window === 'undefined') return false;
const s = localStorage.getItem('rein_invert');
Expand All @@ -49,7 +49,7 @@ function TrackpadPage() {

const handleKeyDown = (e: React.KeyboardEvent<HTMLInputElement>) => {
const key = e.key.toLowerCase();

if (modifier !== "Release") {
if (key === 'backspace') {
e.preventDefault();
Expand All @@ -68,15 +68,22 @@ function TrackpadPage() {
}
return;
}
if (key === 'backspace') send({ type: 'key', key: 'backspace' });
else if (key === 'enter') send({ type: 'key', key: 'enter' });
else if (key !== 'unidentified' && key.length > 1) {

if (key === 'backspace') {
e.preventDefault();
if (hiddenInputRef.current) hiddenInputRef.current.value = '';
send({ type: 'key', key: 'backspace' });
} else if (key === 'enter') {
e.preventDefault();
if (hiddenInputRef.current) hiddenInputRef.current.value = '';
send({ type: 'key', key: 'enter' });
} else if (key !== 'unidentified' && key.length > 1) {
send({ type: 'key', key });
}
};

const handleModifierState = () => {
switch(modifier){
switch (modifier) {
case "Active":
if (buffer.length > 0) {
setModifier("Hold");
Expand All @@ -96,11 +103,8 @@ function TrackpadPage() {
};

const handleModifier = (key: string) => {
console.log(`handleModifier called with key: ${key}, current modifier: ${modifier}, buffer:`, buffer);

if (modifier === "Hold") {
const comboKeys = [...buffer, key];
console.log(`Sending combo:`, comboKeys);
sendCombo(comboKeys);
return;
} else if (modifier === "Active") {
Expand Down Expand Up @@ -139,7 +143,7 @@ function TrackpadPage() {
// Don't send text during modifier mode
if (modifier !== "Release") {
handleModifier(val);
}else{
} else {
sendText(val);
}
(e.target as HTMLInputElement).value = '';
Expand Down