[Bug] Compaction Fails Unexpectedly with "Conversation Too Long" Error

Bug Description

/compact

⎿  Error: Error during compaction: Error: Conversation too long. Press esc twice to go up a few messages and try again.

────── THIS HAPPENS even if i have 99% of my context window left. So this is a SERIOUS bug. Calling /compact manually crashes EVERY TIME.

Environment Info

• Platform: linux
• Terminal: vte-based
• Version: 1.0.120
• Feedback ID: 415483f2-980d-400c-92d1-21c3e30c33b5

Errors

[{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at iV (file:///home/jman/.nvm/versions/node/v20.19.1/lib/node_modules/@anthropic-ai/claude-code/cli.js:1794:1184)\n    at file:///home/jman/.nvm/versions/node/v20.19.1/lib/node_modules/@anthropic-ai/claude-code/cli.js:1794:912\n    at Array.map (<anonymous>)\n    at TX (file:///home/jman/.nvm/versions/node/v20.19.1/lib/node_modules/@anthropic-ai/claude-code/cli.js:1794:903)\n    at IUB (file:///home/jman/.nvm/versions/node/v20.19.1/lib/node_modules/@anthropic-ai/claude-code/cli.js:3032:14086)\n    at QC (file:///home/jman/.nvm/versions/node/v20.19.1/lib/node_modules/@anthropic-ai/claude-code/cli.js:84:19415)\n    at Jp (file:///home/jman/.nvm/versions/node/v20.19.1/lib/node_modules/@anthropic-ai/claude-code/cli.js:86:42814)\n    at W9 (file:///home/jman/.nvm/versions/node/v20.19.1/lib/node_modules/@anthropic-ai/claude-code/cli.js:86:38355)\n    at Hh (file:///home/jman/.nvm/versions/node/v20.19.1/lib/node_modules/@anthropic-ai/claude-code/cli.js:86:38283)\n    at zC (file:///home/jman/.nvm/versions/node/v20.19.1/lib/node_modules/@anthropic-ai/claude-code/cli.js:86:38137)","timestamp":"2025-09-23T08:20:34.460Z"},{"error":"Error: Request was aborted.\n    at y51._createMessage (file:///home/jman/.nvm/versions/node/v20.19.1/lib/node_modules/@anthropic-ai/claude-code/cli.js:1000:7955)\n    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)","timestamp":"2025-09-23T08:21:05.709Z"},{"error":"RangeError [ERR_CHILD_PROCESS_STDIO_MAXBUFFER]: stdout maxBuffer length exceeded\n    at Socket.onChildStdout (node:child_process:490:14)\n    at Socket.emit (node:events:524:28)\n    at Socket.emit (node:domain:489:12)\n    at addChunk (node:internal/streams/readable:561:12)\n    at readableAddChunkPushByteMode (node:internal/streams/readable:512:3)\n    at Readable.push (node:internal/streams/readable:392:5)\n    at Pipe.onStreamRead (node:internal/stream_base_commons:191:23)","timestamp":"2025-09-23T08:21:28.094Z"},{"error":"Error: Request was aborted.\n    at IP.makeRequest (file:///home/jman/.nvm/versions/node/v20.19.1/lib/node_modules/@anthropic-ai/claude-code/cli.js:1009:3864)\n    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)","timestamp":"2025-09-23T08:23:25.596Z"},{"error":"Error: Request was aborted.\n    at y51._createMessage (file:///home/jman/.nvm/versions/node/v20.19.1/lib/node_modules/@anthropic-ai/claude-code/cli.js:1000:7955)\n    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)","timestamp":"2025-09-23T08:26:44.231Z"},{"error":"Error: Request was aborted.\n    at y51._createMessage (file:///home/jman/.nvm/versions/node/v20.19.1/lib/node_modules/@anthropic-ai/claude-code/cli.js:1000:7955)\n    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)","timestamp":"2025-09-23T08:27:30.757Z"},{"error":"Error: Request was aborted.\n    at y51._createMessage (file:///home/jman/.nvm/versions/node/v20.19.1/lib/node_modules/@anthropic-ai/claude-code/cli.js:1000:7955)\n    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)","timestamp":"2025-09-23T08:28:55.693Z"},{"error":"Error: Request was aborted.\n    at IP.makeRequest (file:///home/jman/.nvm/versions/node/v20.19.1/lib/node_modules/@anthropic-ai/claude-code/cli.js:1009:3864)\n    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)","timestamp":"2025-09-23T08:29:49.589Z"},{"error":"Error: Request was aborted.\n    at IP.makeRequest (file:///home/jman/.nvm/versions/node/v20.19.1/lib/node_modules/@anthropic-ai/claude-code/cli.js:1009:3864)\n    at runNextTicks (node:internal/process/task_queues:60:5)\n    at process.processTimers (node:internal/timers:516:9)","timestamp":"2025-09-23T08:31:44.416Z"},{"error":"Error: Request was aborted.\n    at y51._createMessage (file:///home/jman/.nvm/versions/node/v20.19.1/lib/node_modules/@anthropic-ai/claude-code/cli.js:1000:7955)\n    at processTicksAndRejections (node:internal/process/task_queues:95:5)\n    at runNextTicks (node:internal/process/task_queues:64:3)\n    at process.processTimers (node:internal/timers:516:9)","timestamp":"2025-09-23T08:33:15.899Z"},{"error":"Error: Request was aborted.\n    at y51._createMessage (file:///home/jman/.nvm/versions/node/v20.19.1/lib/node_modules/@anthropic-ai/claude-code/cli.js:1000:7955)\n    at processTicksAndRejections (node:internal/process/task_queues:95:5)\n    at runNextT

Note: Error logs were truncated.