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fix(coding-agent): persist bash output on line truncation closes #2852

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This commit is contained in:
Mario Zechner
2026-04-05 23:28:49 +02:00
parent 0c98d5a54a
commit 52d16d5a31
4 changed files with 80 additions and 15 deletions
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24
packages/coding-agent/src/core/tools/bash.ts
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@@ -292,14 +292,18 @@ export function createBashToolDefinition(
let chunksBytes = 0;
const maxChunksBytes = DEFAULT_MAX_BYTES * 2;
const ensureTempFile = () => {
if (tempFilePath) return;
tempFilePath = getTempFilePath();
tempFileStream = createWriteStream(tempFilePath);
for (const chunk of chunks) tempFileStream.write(chunk);
};
const handleData = (data: Buffer) => {
totalBytes += data.length;
// Start writing to a temp file once output exceeds the in-memory threshold.
if (totalBytes > DEFAULT_MAX_BYTES && !tempFilePath) {
tempFilePath = getTempFilePath();
tempFileStream = createWriteStream(tempFilePath);
// Write all buffered chunks to the file.
for (const chunk of chunks) tempFileStream.write(chunk);
if (totalBytes > DEFAULT_MAX_BYTES) {
ensureTempFile();
}
// Write to temp file if we have one.
if (tempFileStream) tempFileStream.write(data);
@@ -316,6 +320,9 @@ export function createBashToolDefinition(
const fullBuffer = Buffer.concat(chunks);
const fullText = fullBuffer.toString("utf-8");
const truncation = truncateTail(fullText);
if (truncation.truncated) {
ensureTempFile();
}
onUpdate({
content: [{ type: "text", text: truncation.content || "" }],
details: {
@@ -333,13 +340,16 @@ export function createBashToolDefinition(
env: spawnContext.env,
})
.then(({ exitCode }) => {
// Close temp file stream before building the final result.
if (tempFileStream) tempFileStream.end();
// Combine the rolling buffer chunks.
const fullBuffer = Buffer.concat(chunks);
const fullOutput = fullBuffer.toString("utf-8");
// Apply tail truncation for the final display payload.
const truncation = truncateTail(fullOutput);
if (truncation.truncated) {
ensureTempFile();
}
// Close temp file stream before building the final result.
if (tempFileStream) tempFileStream.end();
let outputText = truncation.content || "(no output)";
let details: BashToolDetails | undefined;
if (truncation.truncated) {