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Fix Android Vietnamese IME input (#1032)

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This commit is contained in:
ZacharyZcR
2026-07-13 22:59:53 +08:00
committed by GitHub
parent ccce77ddcc
commit f9459d6ede
3 changed files with 134 additions and 1 deletions
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scripts/patch-xterm-android-ime.cjs
+85
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@@ -0,0 +1,85 @@
const fs = require("node:fs");
const path = require("node:path");
const xtermDir = path.join(
__dirname,
"..",
"node_modules",
"@xterm",
"xterm",
"lib",
);
// Backport the textarea-shrink fix from gmuxapp/xterm.js@6a011cf while
// xtermjs/xterm.js#3600 remains unresolved upstream. Android IMEs can restart
// composition on the previous word and replace it with a shorter value (for
// example, Vietnamese "Hoar" -> "Hỏa"). xterm 6.0 otherwise emits nothing.
const patches = [
{
file: "xterm.mjs",
replacements: [
[
'this._compositionPosition={start:0,end:0},this._dataAlreadySent=""',
'this._compositionPosition={start:0,end:0},this._preCompositionValue="",this._dataAlreadySent=""',
],
[
'this._compositionPosition.start=this._textarea.value.length,this._compositionView.textContent=""',
'this._compositionPosition.start=this._textarea.value.length,this._preCompositionValue=this._textarea.value,this._compositionView.textContent=""',
],
[
"let e={start:this._compositionPosition.start,end:this._compositionPosition.end};this._isSendingComposition=!0",
"let e={start:this._compositionPosition.start,end:this._compositionPosition.end};const s=this._preCompositionValue;this._isSendingComposition=!0",
],
[
"e.start+=this._dataAlreadySent.length,this._isComposing?i=this._textarea.value.substring(e.start,this._compositionPosition.start):i=this._textarea.value.substring(e.start),i.length>0&&",
"e.start+=this._dataAlreadySent.length;if(this._isComposing)i=this._textarea.value.substring(e.start,this._compositionPosition.start);else{const t=this._textarea.value;if(t.length<s.length){let e=0;const r=Math.min(t.length,s.length);for(;e<r&&t.charCodeAt(e)===s.charCodeAt(e);)e++;i=b.DEL.repeat(s.length-e)+t.substring(e)}else i=t.substring(e.start)}i.length>0&&",
],
],
},
{
file: "xterm.js",
replacements: [
[
'this._compositionPosition={start:0,end:0},this._dataAlreadySent=""',
'this._compositionPosition={start:0,end:0},this._preCompositionValue="",this._dataAlreadySent=""',
],
[
'this._compositionPosition.start=this._textarea.value.length,this._compositionView.textContent=""',
'this._compositionPosition.start=this._textarea.value.length,this._preCompositionValue=this._textarea.value,this._compositionView.textContent=""',
],
[
"const e={start:this._compositionPosition.start,end:this._compositionPosition.end};this._isSendingComposition=!0",
"const e={start:this._compositionPosition.start,end:this._compositionPosition.end},i=this._preCompositionValue;this._isSendingComposition=!0",
],
[
"e.start+=this._dataAlreadySent.length,t=this._isComposing?this._textarea.value.substring(e.start,this._compositionPosition.start):this._textarea.value.substring(e.start),t.length>0&&",
"e.start+=this._dataAlreadySent.length;this._isComposing?t=this._textarea.value.substring(e.start,this._compositionPosition.start):(()=>{const s=this._textarea.value;if(s.length<i.length){let e=0;const r=Math.min(s.length,i.length);for(;e<r&&s.charCodeAt(e)===i.charCodeAt(e);)e++;t=a.C0.DEL.repeat(i.length-e)+s.substring(e)}else t=s.substring(e.start)})(),t.length>0&&",
],
],
},
];
for (const { file, replacements } of patches) {
const filePath = path.join(xtermDir, file);
if (!fs.existsSync(filePath)) {
throw new Error(`[patch-xterm-android-ime] Missing ${filePath}`);
}
let source = fs.readFileSync(filePath, "utf8");
if (source.includes("_preCompositionValue")) {
console.log(`[patch-xterm-android-ime] ${file} already patched`);
continue;
}
for (const [original, patched] of replacements) {
if (!source.includes(original)) {
throw new Error(
`[patch-xterm-android-ime] Expected source not found in ${file}`,
);
}
source = source.replace(original, patched);
}
fs.writeFileSync(filePath, source);
console.log(`[patch-xterm-android-ime] Patched ${file}`);
}