fix(edit): strip formatting whitespace from TOML values in mise edit

[jdx]

Summary

• Fix mise edit generating invalid config with booleans like " true" instead of "true"
• toml_edit's Formatted<T> wrapper preserves original whitespace; calling .to_string() on it includes that whitespace
• Use .value().to_string() to extract raw values for Integer, Float, Boolean, and Datetime, matching the existing pattern for String

Fixes #8141

Test plan

• All 37 existing mise-interactive-config tests pass
• All linting passes
• Manual test: create a mise.toml with boolean settings, run mise edit, save without changes, verify booleans remain valid

🤖 Generated with Claude Code

---

Note

Low Risk
Small, localized change to TOML value stringification; primary risk is subtle formatting/round-trip differences for numeric/boolean/datetime values.

Overview
Fixes mise edit round-tripping TOML scalars by extracting raw values from toml_edit::Formatted<T> rather than preserving its original formatting.

In TomlDocument::value_to_string (crates/mise-interactive-config/src/document.rs), integer/float/boolean/datetime serialization now uses .value().to_string() (matching strings) instead of .to_string(), preventing emitted values like " true" that can make saved configs invalid.

^{Written by Cursor Bugbot for commit 69dc7ab. This will update automatically on new commits. Configure here.}

[gemini-code-assist]

Summary of Changes

Hello @jdx, 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 addresses a critical bug in mise edit that caused incorrect TOML serialization for certain data types by preserving unwanted whitespace, leading to invalid configurations. Additionally, it enhances the mise set command by introducing a --stdin option, enabling more flexible input for multiline environment variables.

Highlights

• Fix for mise edit TOML formatting: Corrected an issue where mise edit would generate invalid TOML configurations by including extraneous whitespace when serializing boolean, integer, float, and datetime values, ensuring proper toml_edit value extraction.
• New mise set --stdin feature: Introduced a new --stdin flag to the mise set command, allowing users to provide multiline environment variable values by reading from standard input, with automatic stripping of a single trailing newline.

Changelog

• crates/mise-interactive-config/src/document.rs
  • Updated value_to_string to correctly extract raw values from Integer, Float, Boolean, and Datetime types using .value().to_string() to prevent unwanted whitespace from toml_edit's Formatted<T> wrapper.
• docs/cli/set.md
  • Added documentation for the new --stdin flag, explaining its usage for multiline input and providing examples.
• e2e/cli/test_set
  • Introduced end-to-end tests for the --stdin flag, covering multiline input, trailing newline stripping, and error handling for incorrect usage (multiple keys or KEY=VALUE syntax).
• man/man1/mise.1
  • Updated the man page for the mise set command to include the --stdin option and its description.
• mise.usage.kdl
  • Modified the mise set command definition to include the --stdin flag, its help text, and updated the after_long_help examples to demonstrate its usage.
• src/cli/set.rs
  • Implemented the --stdin flag for the Set command, including argument parsing, conflict resolution with --prompt, and logic to read from standard input, handle single key requirement, and strip trailing newlines.
• xtasks/fig/src/mise.ts
  • Added the --stdin option to the Fig completion specification for the mise set command.

Activity

• All 37 existing mise-interactive-config tests passed.
• All linting checks passed.
• A manual test was performed to verify that boolean settings in mise.toml remain valid after running mise edit and saving without changes.

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[gemini-code-assist]

Code Review

This pull request introduces two main changes. First, it fixes a bug in mise edit where TOML values for integers, floats, booleans, and datetimes were being serialized with extra whitespace, potentially creating invalid configurations. This is corrected by using .value().to_string() to extract the raw value, which is a solid fix. Second, it adds a new --stdin flag to the mise set command, allowing multiline values to be provided via standard input. This new feature is well-implemented with appropriate validation, clear documentation, and comprehensive end-to-end tests. The code quality is high, and I have no concerns or suggestions for improvement.

[Copilot]

Pull request overview

This PR addresses a bug in the interactive TOML editor where toml_edit's Formatted<T> wrapper preserves formatting whitespace, causing booleans and other values to be serialized with unwanted whitespace (e.g., " true" instead of true). The fix extracts raw values using .value().to_string() instead of directly calling .to_string() on formatted values. Additionally, the PR adds a --stdin flag to mise set for reading multiline environment variable values from stdin.

Changes:

• Fixed value_to_string() in mise-interactive-config to strip formatting whitespace from TOML values
• Added --stdin flag to mise set command for multiline environment variable input
• Added comprehensive tests for the new --stdin functionality

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
crates/mise-interactive-config/src/document.rs	Fixed value_to_string() to call .value().to_string() on Integer, Float, Boolean, and Datetime types to strip formatting whitespace
src/cli/set.rs	Added --stdin flag implementation with validation, stdin reading, and single trailing newline stripping
e2e/cli/test_set	Added 6 new test cases covering multiline values, newline stripping, and error cases for --stdin
xtasks/fig/src/mise.ts	Added --stdin flag to Fig autocomplete spec
mise.usage.kdl	Updated usage spec with --stdin flag and examples
man/man1/mise.1	Updated man page documentation for --stdin flag
docs/cli/set.md	Added --stdin documentation and examples

---

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[jdx]

bugbot run

[cursor]

✅ Bugbot reviewed your changes and found no new issues!

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[github-actions]

Hyperfine Performance

mise x -- echo

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
mise-2026.2.13 x -- echo	23.8 ± 0.5	23.1	29.1	1.00
mise x -- echo	24.4 ± 1.2	23.4	40.5	1.02 ± 0.06

mise env

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
mise-2026.2.13 env	23.5 ± 0.4	22.8	24.9	1.00
mise env	24.3 ± 0.8	23.1	28.4	1.03 ± 0.04

mise hook-env

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
mise-2026.2.13 hook-env	24.0 ± 0.5	23.3	26.6	1.00
mise hook-env	24.6 ± 1.1	23.6	41.4	1.02 ± 0.05

mise ls

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
mise-2026.2.13 ls	23.0 ± 0.7	21.9	26.9	1.00
mise ls	23.3 ± 0.5	22.0	24.6	1.01 ± 0.04

xtasks/test/perf

Command	mise-2026.2.13	mise	Variance
install (cached)	129ms	129ms	+0%
ls (cached)	80ms	82ms	-2%
bin-paths (cached)	85ms	83ms	+2%
task-ls (cached)	830ms	845ms	-1%