fix(gateway): cap terminal code-block preview in non-verbose mode - #42729
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The markdown code-block change rendered args['command'] in full in both verbose AND non-verbose (all/new) modes, so a long or multi-line terminal command bypassed the tool_preview_length cap (default 40) and rendered as a huge block. Non-verbose now collapses to a single line capped at the preview length while keeping the fence; verbose keeps the full command.
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alt-glitch
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a249169329-cpu
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Jun 9, 2026
…usResearch#42729) The markdown code-block change rendered args['command'] in full in both verbose AND non-verbose (all/new) modes, so a long or multi-line terminal command bypassed the tool_preview_length cap (default 40) and rendered as a huge block. Non-verbose now collapses to a single line capped at the preview length while keeping the fence; verbose keeps the full command.
changman
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Jun 10, 2026
…usResearch#42729) The markdown code-block change rendered args['command'] in full in both verbose AND non-verbose (all/new) modes, so a long or multi-line terminal command bypassed the tool_preview_length cap (default 40) and rendered as a huge block. Non-verbose now collapses to a single line capped at the preview length while keeping the fence; verbose keeps the full command.
alt-glitch
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Jun 14, 2026
…2729) The markdown code-block change rendered args['command'] in full in both verbose AND non-verbose (all/new) modes, so a long or multi-line terminal command bypassed the tool_preview_length cap (default 40) and rendered as a huge block. Non-verbose now collapses to a single line capped at the preview length while keeping the fence; verbose keeps the full command.
ether-btc
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Jun 15, 2026
…usResearch#42729) The markdown code-block change rendered args['command'] in full in both verbose AND non-verbose (all/new) modes, so a long or multi-line terminal command bypassed the tool_preview_length cap (default 40) and rendered as a huge block. Non-verbose now collapses to a single line capped at the preview length while keeping the fence; verbose keeps the full command.
davidgut1982
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Jun 17, 2026
…usResearch#42729) The markdown code-block change rendered args['command'] in full in both verbose AND non-verbose (all/new) modes, so a long or multi-line terminal command bypassed the tool_preview_length cap (default 40) and rendered as a huge block. Non-verbose now collapses to a single line capped at the preview length while keeping the fence; verbose keeps the full command.
T02200059
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Jun 18, 2026
…usResearch#42729) The markdown code-block change rendered args['command'] in full in both verbose AND non-verbose (all/new) modes, so a long or multi-line terminal command bypassed the tool_preview_length cap (default 40) and rendered as a huge block. Non-verbose now collapses to a single line capped at the preview length while keeping the fence; verbose keeps the full command.
waefrebeorn
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Jul 2, 2026
…usResearch#42729) The markdown code-block change rendered args['command'] in full in both verbose AND non-verbose (all/new) modes, so a long or multi-line terminal command bypassed the tool_preview_length cap (default 40) and rendered as a huge block. Non-verbose now collapses to a single line capped at the preview length while keeping the fence; verbose keeps the full command.
santhreal
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Jul 13, 2026
…usResearch#42729) The markdown code-block change rendered args['command'] in full in both verbose AND non-verbose (all/new) modes, so a long or multi-line terminal command bypassed the tool_preview_length cap (default 40) and rendered as a huge block. Non-verbose now collapses to a single line capped at the preview length while keeping the fence; verbose keeps the full command.
donbowman
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Jul 13, 2026
…usResearch#42729) The markdown code-block change rendered args['command'] in full in both verbose AND non-verbose (all/new) modes, so a long or multi-line terminal command bypassed the tool_preview_length cap (default 40) and rendered as a huge block. Non-verbose now collapses to a single line capped at the preview length while keeping the fence; verbose keeps the full command.
Gravezzz
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Jul 21, 2026
…usResearch#42729) The markdown code-block change rendered args['command'] in full in both verbose AND non-verbose (all/new) modes, so a long or multi-line terminal command bypassed the tool_preview_length cap (default 40) and rendered as a huge block. Non-verbose now collapses to a single line capped at the preview length while keeping the fence; verbose keeps the full command.
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leewenjie
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Aug 7, 2026
…usResearch#42729) The markdown code-block change rendered args['command'] in full in both verbose AND non-verbose (all/new) modes, so a long or multi-line terminal command bypassed the tool_preview_length cap (default 40) and rendered as a huge block. Non-verbose now collapses to a single line capped at the preview length while keeping the fence; verbose keeps the full command.
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Summary
Long and multi-line terminal commands no longer render as huge blocks in non-verbose gateway tool progress.
The markdown code-block change emitted
args['command']in full in both verbose and non-verbose (all/new) modes, so terminal commands bypassed thetool_preview_lengthcap (default 40) that the non-terminal preview path applies. A long pipeline or heredoc rendered as a wall of text (Chris Silvestri's report). Root cause: the fenced-block branch had no truncation path.Changes
gateway/run.py: build two variants —_code_block_full(verbose, uncapped) and_code_block_short(non-verbose: first line only, capped attool_preview_length,...marker for truncation/multi-line). Both keep the bare fence (nobashtag).tests/gateway/test_run_progress_topics.py: corrected the non-verbose test (it asserted the full multi-line body was present — i.e. asserted the bug); added a verbose-mode test asserting the full command IS shown.Validation
rg --json --hidden --glob '!.git' 'su...fencedset -euo pipefail ...fencedtests/gateway/test_run_progress_topics.py— 31 passed.Infographic