fix(task): include args in task output prefix and truncate long prefixes

[jdx]

Summary

• Include task arguments in the [prefix] output so parallel runs of the same task with different args are distinguishable (e.g. [test-docker 4.1] vs [test-docker 3.2])
• Truncate long prefixes to 40 characters to prevent them from consuming too much terminal width

Closes #8531

Test plan

• Run a task with args as a dependency and verify prefix includes the args
• Run a task with very long args and verify prefix is truncated with …
• Run tasks without args and verify behavior is unchanged

🤖 Generated with Claude Code

---

Note

Low Risk
Changes are limited to log/prefix formatting and corresponding test expectations, with no impact on task execution semantics or security-sensitive code.

Overview
Task output prefixes now include the task’s CLI args (e.g. [build a]) so concurrent/dep runs of the same task are distinguishable, and long prefixes are truncated to 40 characters with an ellipsis.

E2E task tests were updated to assert the new prefix format for usage-spec tasks and dependency-invoked tasks with args.

^{Written by Cursor Bugbot for commit f72a6e7. This will update automatically on new commits. Configure here.}

[gemini-code-assist]

Summary of Changes

Hello, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request enhances the readability and utility of task output by modifying how task prefixes are generated. It ensures that tasks run with different arguments are clearly distinguishable in logs and prevents overly long prefixes from cluttering the terminal display, thereby improving the user experience for complex task workflows.

Highlights

• Task Output Prefix: Included task arguments in the output prefix to differentiate parallel runs of the same task with varying arguments (e.g., [test-docker 4.1] vs [test-docker 3.2]).
• Prefix Truncation: Implemented truncation for long prefixes, limiting them to 40 characters to prevent excessive terminal width consumption, using an ellipsis (…) for shortened parts.

Changelog

• src/task/mod.rs
  • Modified the prefix method to incorporate task arguments into the generated prefix string.
  • Added logic to truncate the task prefix to a maximum of 40 characters, appending an ellipsis if truncated.

Activity

• No specific activity (comments, reviews, or progress updates) has been recorded for this pull request yet.

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[greptile-apps]

Greptile Summary

This PR makes a small, UI-only enhancement to the Task::prefix() method: task runtime arguments are now appended to the display name inside the […] prefix (e.g. [build a] instead of [build]), and the inner content is truncated to 40 display columns with a … ellipsis to prevent very long task names or arg lists from dominating terminal width.

• src/task/mod.rs (prefix): Builds inner by joining display_name and args, trims trailing whitespace (handles the no-args case cleanly), then calls console::truncate_str(inner, 40, "…") before wrapping in brackets. Total prefix width is at most 42 terminal columns.
• e2e/tasks/test_task_run_depends: Updates expected output so parallel build a / b / c invocations each carry their distinguishing arg in the prefix.
• e2e/tasks/test_task_double_dash_behavior: Updates the with_usage assertion to include the parsed flags/args in the prefix.
• No changes to execution logic, scheduling, or data handling — purely cosmetic output formatting.

Confidence Score: 5/5

• This PR is safe to merge — changes are isolated to a single display-formatting function with no impact on execution logic.
• The change is three lines inside prefix(), which is a pure formatting helper. The trim() correctly handles the empty-args case, truncate_str correctly operates on display width (Unicode-safe), and both e2e tests are updated to match the new expected output. No execution paths, scheduling, or data structures are affected.
• No files require special attention.

Important Files Changed

Filename	Overview
src/task/mod.rs	Adds args to prefix output and truncates the inner content to 40 display columns; logic is sound, though console::truncate_str is called via full module path while already directly imported (previously flagged).
e2e/tasks/test_task_run_depends	Correctly updates expected prefixes from [build] to [build a/b/c] to match the new args-inclusive prefix format.
e2e/tasks/test_task_double_dash_behavior	Correctly updates expected prefix from [with_usage] to [with_usage -x myfile] to reflect the new args-inclusive prefix format.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A["prefix() called"] --> B["format!('{} {}', display_name, args.join(' '))"]
    B --> C["inner.trim()"]
    C --> D{"display_width(inner) > 40?"}
    D -- "No" --> E["Use inner as-is"]
    D -- "Yes" --> F["truncate_str(inner, 40, '…')\n→ 39 chars + '…'"]
    E --> G["format!('[{}]', inner)"]
    F --> G
    G --> H["Return prefix string\n(max 42 display cols)"]

Loading

_{Last reviewed commit: f72a6e7}

[greptile-apps]

Redundant module path prefix on imported function

truncate_str is already directly imported on line 10 via use console::{Color, measure_text_width, truncate_str};, and the existing usage at line 1290 calls it without the module prefix. Using the full path console::truncate_str is inconsistent with both.

Suggested change

	format!("[{}]", console::truncate_str(inner, max_width, "…"))
	format!("[{}]", truncate_str(inner, max_width, "…"))

[gemini-code-assist]

Code Review

This pull request enhances task output by including arguments in the task prefix, making it easier to differentiate between parallel runs of the same task. It also introduces truncation for long prefixes, limiting them to 40 characters to maintain a clean terminal interface. The implementation is clear and correctly handles various cases, such as tasks with no arguments. The changes are well-contained and achieve the intended improvements.

_{Note: Security Review did not run due to the size of the PR.}

[github-actions]

Hyperfine Performance

mise x -- echo

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
mise-2026.3.5 x -- echo	25.1 ± 1.1	22.8	31.7	1.00
mise x -- echo	25.3 ± 1.1	23.1	29.6	1.01 ± 0.06

mise env

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
mise-2026.3.5 env	24.9 ± 0.7	22.7	27.1	1.00
mise env	25.5 ± 1.0	23.0	37.0	1.02 ± 0.05

mise hook-env

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
mise-2026.3.5 hook-env	25.5 ± 0.8	23.5	27.8	1.00
mise hook-env	26.1 ± 0.7	24.4	29.3	1.02 ± 0.04

mise ls

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
mise-2026.3.5 ls	24.1 ± 1.0	22.1	26.9	1.00 ± 0.07
mise ls	24.1 ± 1.4	22.4	40.0	1.00

xtasks/test/perf

Command	mise-2026.3.5	mise	Variance
install (cached)	155ms	153ms	+1%
ls (cached)	85ms	84ms	+1%
bin-paths (cached)	88ms	86ms	+2%
task-ls (cached)	844ms	826ms	+2%