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Implement tool result truncation with actionable notices (#134)

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- read: actionable notices with offset for continuation
  - First line > 30KB: return empty + bash command suggestion
  - Hit limit: '[Showing lines X-Y of Z. Use offset=N to continue]'

- bash: tail truncation with temp file
  - Notice includes line range + temp file path
  - Edge case: last line > 30KB shows partial

- grep: pre-truncate match lines to 500 chars
  - '[... truncated]' suffix on long lines
  - Notice for match limit and line truncation

- find/ls: result/entry limit notices
  - '[N results limit reached. Use limit=M for more]'

- All notices now in text content (LLM sees them)
- TUI simplified (notices render as part of output)
- Never return partial lines (except bash edge case)
This commit is contained in:
Mario Zechner 2025-12-07 01:11:31 +01:00
parent de77cd1419
commit b813a8b92b
9 changed files with 465 additions and 164 deletions
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46
packages/coding-agent/src/tui/tool-execution.ts
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@ -128,15 +128,7 @@ export class ToolExecutionComponent extends Container {
}
}
// Show truncation notice at the bottom in warning color if present in details
const truncation = this.result.details?.truncation;
const fullOutputPath = this.result.details?.fullOutputPath;
if (truncation?.truncated) {
if (fullOutputPath) {
text += "\n" + theme.fg("warning", `[Full output: ${fullOutputPath}]`);
}
text += "\n" + theme.fg("warning", truncation.notice);
}
// Truncation notice is now in the text content itself, TUI just shows it
}
} else if (this.toolName === "read") {
const path = shortenPath(this.args?.file_path || this.args?.path || "");
@ -166,11 +158,7 @@ export class ToolExecutionComponent extends Container {
text += theme.fg("toolOutput", `\n... (${remaining} more lines)`);
}
// Show truncation notice at the bottom in warning color if present in details
const truncation = this.result.details?.truncation;
if (truncation?.truncated) {
text += "\n" + theme.fg("warning", truncation.notice);
}
// Truncation notice is now in the text content itself
}
} else if (this.toolName === "write") {
const path = shortenPath(this.args?.file_path || this.args?.path || "");
@ -249,15 +237,7 @@ export class ToolExecutionComponent extends Container {
}
}
// Show truncation notice from details
const entryLimit = this.result.details?.entryLimitReached;
const truncation = this.result.details?.truncation;
if (entryLimit) {
text += "\n" + theme.fg("warning", `[Truncated: ${entryLimit} entries limit reached]`);
}
if (truncation?.truncated) {
text += "\n" + theme.fg("warning", truncation.notice);
}
// Truncation notice is now in the text content itself
}
} else if (this.toolName === "find") {
const pattern = this.args?.pattern || "";
@ -287,15 +267,7 @@ export class ToolExecutionComponent extends Container {
}
}
// Show truncation notice from details
const resultLimit = this.result.details?.resultLimitReached;
const truncation = this.result.details?.truncation;
if (resultLimit) {
text += "\n" + theme.fg("warning", `[Truncated: ${resultLimit} results limit reached]`);
}
if (truncation?.truncated) {
text += "\n" + theme.fg("warning", truncation.notice);
}
// Truncation notice is now in the text content itself
}
} else if (this.toolName === "grep") {
const pattern = this.args?.pattern || "";
@ -329,15 +301,7 @@ export class ToolExecutionComponent extends Container {
}
}
// Show truncation notice from details
const matchLimit = this.result.details?.matchLimitReached;
const truncation = this.result.details?.truncation;
if (matchLimit) {
text += "\n" + theme.fg("warning", `[Truncated: ${matchLimit} matches limit reached]`);
}
if (truncation?.truncated) {
text += "\n" + theme.fg("warning", truncation.notice);
}
// Truncation notice is now in the text content itself
}
} else {
// Generic tool